refactor: migrate all 7 bridge clusters to BackendAdapter (WIP)

70+ files changed, net -688 lines. Bridge files being replaced with
BackendAdapter calls. Clusters 2-8 in progress: theme, groups/workspace,
agent, PTY/terminal, files, orchestration, infrastructure.

packages/types/backend.ts

@@ -1,9 +1,14 @@
 // BackendAdapter — abstraction layer for Tauri and Electrobun backends
 
-import type { AgentStartOptions, AgentMessage, AgentStatus } from './agent';
-import type { FileEntry, FileContent, PtyCreateOptions } from './protocol';
+import type { AgentStartOptions, AgentMessage, AgentStatus, ProviderId } from './agent';
+import type { FileEntry, FileContent, PtyCreateOptions, SearchResult } from './protocol';
 import type { SettingsMap } from './settings';
 import type { GroupsFile } from './project';
+import type { AgentId, GroupId, SessionId, ProjectId } from './ids';
+import type {
+  BtmsgAgent, BtmsgMessage, BtmsgChannel, BtmsgChannelMessage, DeadLetterEntry, AuditEntry,
+} from './btmsg';
+import type { Task, TaskComment } from './bttask';
 
 // ── Backend capabilities ─────────────────────────────────────────────────────
 
@@ -31,9 +36,223 @@ export interface BackendCapabilities {
 /** Call to remove an event listener */
 export type UnsubscribeFn = () => void;
 
+// ── Domain-specific sub-interfaces ──────────────────────────────────────────
+
+export interface SessionPersistenceAdapter {
+  listSessions(): Promise<PersistedSession[]>;
+  saveSession(session: PersistedSession): Promise<void>;
+  deleteSession(id: string): Promise<void>;
+  updateSessionTitle(id: string, title: string): Promise<void>;
+  touchSession(id: string): Promise<void>;
+  updateSessionGroup(id: string, groupName: string): Promise<void>;
+  saveLayout(layout: PersistedLayout): Promise<void>;
+  loadLayout(): Promise<PersistedLayout>;
+}
+
+export interface AgentPersistenceAdapter {
+  saveAgentMessages(
+    sessionId: SessionId, projectId: ProjectId, sdkSessionId: string | undefined,
+    messages: AgentMessageRecord[],
+  ): Promise<void>;
+  loadAgentMessages(projectId: ProjectId): Promise<AgentMessageRecord[]>;
+  saveProjectAgentState(state: ProjectAgentState): Promise<void>;
+  loadProjectAgentState(projectId: ProjectId): Promise<ProjectAgentState | null>;
+  saveSessionMetric(metric: Omit<SessionMetricRecord, 'id'>): Promise<void>;
+  loadSessionMetrics(projectId: ProjectId, limit?: number): Promise<SessionMetricRecord[]>;
+  getCliGroup(): Promise<string | null>;
+  discoverMarkdownFiles(cwd: string): Promise<MdFileEntry[]>;
+}
+
+export interface BtmsgAdapter {
+  btmsgGetAgents(groupId: GroupId): Promise<BtmsgAgent[]>;
+  btmsgUnreadCount(agentId: AgentId): Promise<number>;
+  btmsgUnreadMessages(agentId: AgentId): Promise<BtmsgMessage[]>;
+  btmsgHistory(agentId: AgentId, otherId: AgentId, limit?: number): Promise<BtmsgMessage[]>;
+  btmsgSend(fromAgent: AgentId, toAgent: AgentId, content: string): Promise<string>;
+  btmsgSetStatus(agentId: AgentId, status: string): Promise<void>;
+  btmsgEnsureAdmin(groupId: GroupId): Promise<void>;
+  btmsgAllFeed(groupId: GroupId, limit?: number): Promise<BtmsgFeedMessage[]>;
+  btmsgMarkRead(readerId: AgentId, senderId: AgentId): Promise<void>;
+  btmsgGetChannels(groupId: GroupId): Promise<BtmsgChannel[]>;
+  btmsgChannelMessages(channelId: string, limit?: number): Promise<BtmsgChannelMessage[]>;
+  btmsgChannelSend(channelId: string, fromAgent: AgentId, content: string): Promise<string>;
+  btmsgCreateChannel(name: string, groupId: GroupId, createdBy: AgentId): Promise<string>;
+  btmsgAddChannelMember(channelId: string, agentId: AgentId): Promise<void>;
+  btmsgRegisterAgents(config: GroupsFile): Promise<void>;
+  btmsgUnseenMessages(agentId: AgentId, sessionId: string): Promise<BtmsgMessage[]>;
+  btmsgMarkSeen(sessionId: string, messageIds: string[]): Promise<void>;
+  btmsgPruneSeen(): Promise<number>;
+  btmsgRecordHeartbeat(agentId: AgentId): Promise<void>;
+  btmsgGetStaleAgents(groupId: GroupId, thresholdSecs?: number): Promise<string[]>;
+  btmsgGetDeadLetters(groupId: GroupId, limit?: number): Promise<DeadLetterEntry[]>;
+  btmsgClearDeadLetters(groupId: GroupId): Promise<void>;
+  btmsgClearAllComms(groupId: GroupId): Promise<void>;
+}
+
+export interface BttaskAdapter {
+  bttaskList(groupId: GroupId): Promise<Task[]>;
+  bttaskComments(taskId: string): Promise<TaskComment[]>;
+  bttaskUpdateStatus(taskId: string, status: string, version: number): Promise<number>;
+  bttaskAddComment(taskId: string, agentId: AgentId, content: string): Promise<string>;
+  bttaskCreate(
+    title: string, description: string, priority: string,
+    groupId: GroupId, createdBy: AgentId, assignedTo?: AgentId,
+  ): Promise<string>;
+  bttaskDelete(taskId: string): Promise<void>;
+  bttaskReviewQueueCount(groupId: GroupId): Promise<number>;
+}
+
+export interface AnchorsAdapter {
+  saveSessionAnchors(anchors: SessionAnchorRecord[]): Promise<void>;
+  loadSessionAnchors(projectId: string): Promise<SessionAnchorRecord[]>;
+  deleteSessionAnchor(id: string): Promise<void>;
+  clearProjectAnchors(projectId: string): Promise<void>;
+  updateAnchorType(id: string, anchorType: string): Promise<void>;
+}
+
+export interface SearchAdapter {
+  searchInit(): Promise<void>;
+  searchAll(query: string, limit?: number): Promise<SearchResult[]>;
+  searchRebuild(): Promise<void>;
+  searchIndexMessage(sessionId: string, role: string, content: string): Promise<void>;
+}
+
+export interface AuditAdapter {
+  logAuditEvent(agentId: AgentId, eventType: AuditEventType, detail: string): Promise<void>;
+  getAuditLog(groupId: GroupId, limit?: number, offset?: number): Promise<AuditEntry[]>;
+  getAuditLogForAgent(agentId: AgentId, limit?: number): Promise<AuditEntry[]>;
+}
+
+export interface NotificationsAdapter {
+  sendDesktopNotification(title: string, body: string, urgency?: NotificationUrgency): void;
+}
+
+export interface TelemetryAdapter {
+  telemetryLog(level: TelemetryLevel, message: string, context?: Record<string, unknown>): void;
+}
+
+export interface SecretsAdapter {
+  storeSecret(key: string, value: string): Promise<void>;
+  getSecret(key: string): Promise<string | null>;
+  deleteSecret(key: string): Promise<void>;
+  listSecrets(): Promise<string[]>;
+  hasKeyring(): Promise<boolean>;
+  knownSecretKeys(): Promise<string[]>;
+}
+
+export interface FsWatcherAdapter {
+  fsWatchProject(projectId: string, cwd: string): Promise<void>;
+  fsUnwatchProject(projectId: string): Promise<void>;
+  onFsWriteDetected(callback: (event: FsWriteEvent) => void): UnsubscribeFn;
+  fsWatcherStatus(): Promise<FsWatcherStatus>;
+}
+
+export interface CtxAdapter {
+  ctxInitDb(): Promise<void>;
+  ctxRegisterProject(name: string, description: string, workDir?: string): Promise<void>;
+  ctxGetContext(project: string): Promise<CtxEntry[]>;
+  ctxGetShared(): Promise<CtxEntry[]>;
+  ctxGetSummaries(project: string, limit?: number): Promise<CtxSummary[]>;
+  ctxSearch(query: string): Promise<CtxEntry[]>;
+}
+
+export interface MemoraAdapter {
+  memoraAvailable(): Promise<boolean>;
+  memoraList(options?: { tags?: string[]; limit?: number; offset?: number }): Promise<MemoraSearchResult>;
+  memoraSearch(query: string, options?: { tags?: string[]; limit?: number }): Promise<MemoraSearchResult>;
+  memoraGet(id: number): Promise<MemoraNode | null>;
+}
+
+export interface SshAdapter {
+  listSshSessions(): Promise<SshSessionRecord[]>;
+  saveSshSession(session: SshSessionRecord): Promise<void>;
+  deleteSshSession(id: string): Promise<void>;
+}
+
+export interface PluginsAdapter {
+  discoverPlugins(): Promise<PluginMeta[]>;
+  readPluginFile(pluginId: string, filename: string): Promise<string>;
+}
+
+export interface ClaudeProviderAdapter {
+  listProfiles(): Promise<ClaudeProfile[]>;
+  listSkills(): Promise<ClaudeSkill[]>;
+  readSkill(path: string): Promise<string>;
+}
+
+export interface RemoteMachineAdapter {
+  listRemoteMachines(): Promise<RemoteMachineInfo[]>;
+  addRemoteMachine(config: RemoteMachineConfig): Promise<string>;
+  removeRemoteMachine(machineId: string): Promise<void>;
+  connectRemoteMachine(machineId: string): Promise<void>;
+  disconnectRemoteMachine(machineId: string): Promise<void>;
+  probeSpki(url: string): Promise<string>;
+  addSpkiPin(machineId: string, pin: string): Promise<void>;
+  removeSpkiPin(machineId: string, pin: string): Promise<void>;
+  onRemoteSidecarMessage(callback: (msg: RemoteSidecarMessage) => void): UnsubscribeFn;
+  onRemotePtyData(callback: (msg: RemotePtyData) => void): UnsubscribeFn;
+  onRemotePtyExit(callback: (msg: RemotePtyExit) => void): UnsubscribeFn;
+  onRemoteMachineReady(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn;
+  onRemoteMachineDisconnected(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn;
+  onRemoteStateSync(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn;
+  onRemoteError(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn;
+  onRemoteMachineReconnecting(callback: (msg: RemoteReconnectingEvent) => void): UnsubscribeFn;
+  onRemoteMachineReconnectReady(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn;
+  onRemoteSpkiTofu(callback: (msg: RemoteSpkiTofuEvent) => void): UnsubscribeFn;
+}
+
+export interface FileWatcherAdapter {
+  watchFile(paneId: string, path: string): Promise<string>;
+  unwatchFile(paneId: string): Promise<void>;
+  readWatchedFile(path: string): Promise<string>;
+  onFileChanged(callback: (payload: FileChangedPayload) => void): UnsubscribeFn;
+}
+
+export interface AgentBridgeAdapter {
+  /** Direct agent IPC — supports remote machines and resume */
+  queryAgent(options: AgentQueryOptions): Promise<void>;
+  stopAgentDirect(sessionId: string, remoteMachineId?: string): Promise<void>;
+  isAgentReady(): Promise<boolean>;
+  restartAgentSidecar(): Promise<void>;
+  setSandbox(projectCwds: string[], worktreeRoots: string[], enabled: boolean): Promise<void>;
+  onSidecarMessage(callback: (msg: SidecarMessagePayload) => void): UnsubscribeFn;
+  onSidecarExited(callback: () => void): UnsubscribeFn;
+}
+
+export interface PtyBridgeAdapter {
+  /** Per-session PTY — supports remote machines */
+  spawnPty(options: PtySpawnOptions): Promise<string>;
+  writePtyDirect(id: string, data: string, remoteMachineId?: string): Promise<void>;
+  resizePtyDirect(id: string, cols: number, rows: number, remoteMachineId?: string): Promise<void>;
+  killPty(id: string, remoteMachineId?: string): Promise<void>;
+  onPtyData(id: string, callback: (data: string) => void): UnsubscribeFn;
+  onPtyExit(id: string, callback: () => void): UnsubscribeFn;
+}
+
 // ── Backend adapter interface ────────────────────────────────────────────────
 
-export interface BackendAdapter {
+export interface BackendAdapter extends
+  SessionPersistenceAdapter,
+  AgentPersistenceAdapter,
+  BtmsgAdapter,
+  BttaskAdapter,
+  AnchorsAdapter,
+  SearchAdapter,
+  AuditAdapter,
+  NotificationsAdapter,
+  TelemetryAdapter,
+  SecretsAdapter,
+  FsWatcherAdapter,
+  CtxAdapter,
+  MemoraAdapter,
+  SshAdapter,
+  PluginsAdapter,
+  ClaudeProviderAdapter,
+  RemoteMachineAdapter,
+  FileWatcherAdapter,
+  AgentBridgeAdapter,
+  PtyBridgeAdapter {
+
   readonly capabilities: BackendCapabilities;
 
   // ── Lifecycle ────────────────────────────────────────────────────────────
@@ -55,13 +274,13 @@ export interface BackendAdapter {
   loadGroups(): Promise<GroupsFile>;
   saveGroups(groups: GroupsFile): Promise<void>;
 
-  // ── Agent ────────────────────────────────────────────────────────────────
+  // ── Agent (simplified) ────────────────────────────────────────────────────
 
   startAgent(options: AgentStartOptions): Promise<{ ok: boolean; error?: string }>;
   stopAgent(sessionId: string): Promise<{ ok: boolean; error?: string }>;
   sendPrompt(sessionId: string, prompt: string): Promise<{ ok: boolean; error?: string }>;
 
-  // ── PTY ──────────────────────────────────────────────────────────────────
+  // ── PTY (simplified) ──────────────────────────────────────────────────────
 
   createPty(options: PtyCreateOptions): Promise<string>;
   writePty(sessionId: string, data: string): Promise<void>;
@@ -82,3 +301,273 @@ export interface BackendAdapter {
   onPtyOutput(callback: (sessionId: string, data: string) => void): UnsubscribeFn;
   onPtyClosed(callback: (sessionId: string, exitCode: number | null) => void): UnsubscribeFn;
 }
+
+// ── Shared record types ─────────────────────────────────────────────────────
+
+export interface PersistedSession {
+  id: string;
+  type: string;
+  title: string;
+  shell?: string;
+  cwd?: string;
+  args?: string[];
+  group_name?: string;
+  created_at: number;
+  last_used_at: number;
+}
+
+export interface PersistedLayout {
+  preset: string;
+  pane_ids: string[];
+}
+
+export interface AgentMessageRecord {
+  id: number;
+  session_id: SessionId;
+  project_id: ProjectId;
+  sdk_session_id: string | null;
+  message_type: string;
+  content: string;
+  parent_id: string | null;
+  created_at: number;
+}
+
+export interface ProjectAgentState {
+  project_id: ProjectId;
+  last_session_id: SessionId;
+  sdk_session_id: string | null;
+  status: string;
+  cost_usd: number;
+  input_tokens: number;
+  output_tokens: number;
+  last_prompt: string | null;
+  updated_at: number;
+}
+
+export interface SessionMetricRecord {
+  id: number;
+  project_id: ProjectId;
+  session_id: SessionId;
+  start_time: number;
+  end_time: number;
+  peak_tokens: number;
+  turn_count: number;
+  tool_call_count: number;
+  cost_usd: number;
+  model: string | null;
+  status: string;
+  error_message: string | null;
+}
+
+export interface MdFileEntry {
+  name: string;
+  path: string;
+  priority: boolean;
+}
+
+export interface SessionAnchorRecord {
+  id: string;
+  project_id: string;
+  message_id: string;
+  anchor_type: string;
+  content: string;
+  estimated_tokens: number;
+  turn_index: number;
+  created_at: number;
+}
+
+export type AuditEventType =
+  | 'prompt_injection'
+  | 'wake_event'
+  | 'btmsg_sent'
+  | 'btmsg_received'
+  | 'status_change'
+  | 'heartbeat_missed'
+  | 'dead_letter';
+
+export type NotificationUrgency = 'low' | 'normal' | 'critical';
+export type TelemetryLevel = 'error' | 'warn' | 'info' | 'debug' | 'trace';
+
+export interface FsWriteEvent {
+  project_id: string;
+  file_path: string;
+  timestamp_ms: number;
+}
+
+export interface FsWatcherStatus {
+  max_watches: number;
+  estimated_watches: number;
+  usage_ratio: number;
+  active_projects: number;
+  warning: string | null;
+}
+
+export interface CtxEntry {
+  project: string;
+  key: string;
+  value: string;
+  updated_at: string;
+}
+
+export interface CtxSummary {
+  project: string;
+  summary: string;
+  created_at: string;
+}
+
+export interface MemoraNode {
+  id: number;
+  content: string;
+  tags: string[];
+  metadata?: Record<string, unknown>;
+  created_at?: string;
+  updated_at?: string;
+}
+
+export interface MemoraSearchResult {
+  nodes: MemoraNode[];
+  total: number;
+}
+
+export interface SshSessionRecord {
+  id: string;
+  name: string;
+  host: string;
+  port: number;
+  username: string;
+  key_file: string;
+  folder: string;
+  color: string;
+  created_at: number;
+  last_used_at: number;
+}
+
+export interface PluginMeta {
+  id: string;
+  name: string;
+  version: string;
+  description: string;
+  main: string;
+  permissions: string[];
+}
+
+export interface ClaudeProfile {
+  name: string;
+  email: string | null;
+  subscription_type: string | null;
+  display_name: string | null;
+  config_dir: string;
+}
+
+export interface ClaudeSkill {
+  name: string;
+  description: string;
+  source_path: string;
+}
+
+export interface RemoteMachineConfig {
+  label: string;
+  url: string;
+  token: string;
+  auto_connect: boolean;
+  spki_pins?: string[];
+}
+
+export interface RemoteMachineInfo {
+  id: string;
+  label: string;
+  url: string;
+  status: string;
+  auto_connect: boolean;
+  spki_pins: string[];
+}
+
+export interface RemoteSidecarMessage {
+  machineId: string;
+  sessionId?: string;
+  event?: Record<string, unknown>;
+}
+
+export interface RemotePtyData {
+  machineId: string;
+  sessionId?: string;
+  data?: string;
+}
+
+export interface RemotePtyExit {
+  machineId: string;
+  sessionId?: string;
+}
+
+export interface RemoteMachineEvent {
+  machineId: string;
+  payload?: unknown;
+  error?: unknown;
+}
+
+export interface RemoteReconnectingEvent {
+  machineId: string;
+  backoffSecs: number;
+}
+
+export interface RemoteSpkiTofuEvent {
+  machineId: string;
+  hash: string;
+}
+
+export interface FileChangedPayload {
+  pane_id: string;
+  path: string;
+  content: string;
+}
+
+export interface BtmsgFeedMessage {
+  id: string;
+  fromAgent: AgentId;
+  toAgent: AgentId;
+  content: string;
+  createdAt: string;
+  replyTo: string | null;
+  senderName: string;
+  senderRole: string;
+  recipientName: string;
+  recipientRole: string;
+}
+
+export interface AgentQueryOptions {
+  provider?: ProviderId;
+  session_id: string;
+  prompt: string;
+  cwd?: string;
+  max_turns?: number;
+  max_budget_usd?: number;
+  resume_session_id?: string;
+  permission_mode?: string;
+  setting_sources?: string[];
+  system_prompt?: string;
+  model?: string;
+  claude_config_dir?: string;
+  additional_directories?: string[];
+  worktree_name?: string;
+  provider_config?: Record<string, unknown>;
+  extra_env?: Record<string, string>;
+  remote_machine_id?: string;
+}
+
+export interface SidecarMessagePayload {
+  type: string;
+  sessionId?: string;
+  event?: Record<string, unknown>;
+  message?: string;
+  exitCode?: number | null;
+  signal?: string | null;
+}
+
+export interface PtySpawnOptions {
+  shell?: string;
+  cwd?: string;
+  args?: string[];
+  cols?: number;
+  rows?: number;
+  remote_machine_id?: string;
+}

src/App.svelte

@@ -11,7 +11,7 @@
   import { OLLAMA_PROVIDER } from './lib/providers/ollama';
   import { AIDER_PROVIDER } from './lib/providers/aider';
   import { registerMemoryAdapter } from './lib/adapters/memory-adapter';
-  import { MemoraAdapter } from './lib/adapters/memora-bridge';
+  import { MemoraAdapter } from './lib/adapters/memora-adapter';
   import {
     loadWorkspace, getActiveTab, setActiveTab, setActiveProject,
     getEnabledProjects, getAllWorkItems, getActiveProjectId,
@@ -20,7 +20,7 @@
   import { disableWakeScheduler } from './lib/stores/wake-scheduler.svelte';
   import { initGlobalErrorHandler } from './lib/utils/global-error-handler';
   import { handleInfraError } from './lib/utils/handle-error';
-  import { pruneSeen } from './lib/adapters/btmsg-bridge';
+  import { getBackend } from './lib/backend/backend';
   import { invoke } from '@tauri-apps/api/core';
 
   // Workspace components
@@ -119,7 +119,7 @@
     // Step 2: Agent dispatcher
     startAgentDispatcher();
     startHealthTick();
-    pruneSeen().catch(e => handleInfraError(e, 'app.pruneSeen')); // housekeeping: remove stale seen_messages on startup
+    getBackend().btmsgPruneSeen().catch(e => handleInfraError(e, 'app.pruneSeen')); // housekeeping: remove stale seen_messages on startup
     markStep(2);
 
     // Disable wake scheduler in test mode to prevent timer interference

src/lib/adapters/agent-bridge.test.ts

@@ -1,170 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-
-// Use vi.hoisted to declare mocks that are accessible inside vi.mock factories
-const { mockInvoke, mockListen } = vi.hoisted(() => ({
-  mockInvoke: vi.fn(),
-  mockListen: vi.fn(),
-}));
-
-vi.mock('@tauri-apps/api/core', () => ({
-  invoke: mockInvoke,
-}));
-
-vi.mock('@tauri-apps/api/event', () => ({
-  listen: mockListen,
-}));
-
-import {
-  queryAgent,
-  stopAgent,
-  isAgentReady,
-  restartAgent,
-  onSidecarMessage,
-  onSidecarExited,
-  type AgentQueryOptions,
-} from './agent-bridge';
-
-beforeEach(() => {
-  vi.clearAllMocks();
-});
-
-describe('agent-bridge', () => {
-  describe('queryAgent', () => {
-    it('invokes agent_query with options', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-
-      const options: AgentQueryOptions = {
-        session_id: 'sess-1',
-        prompt: 'Hello Claude',
-        cwd: '/tmp',
-        max_turns: 10,
-        max_budget_usd: 1.0,
-      };
-
-      await queryAgent(options);
-
-      expect(mockInvoke).toHaveBeenCalledWith('agent_query', { options });
-    });
-
-    it('passes minimal options (only required fields)', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-
-      const options: AgentQueryOptions = {
-        session_id: 'sess-2',
-        prompt: 'Do something',
-      };
-
-      await queryAgent(options);
-
-      expect(mockInvoke).toHaveBeenCalledWith('agent_query', { options });
-    });
-
-    it('propagates invoke errors', async () => {
-      mockInvoke.mockRejectedValue(new Error('Sidecar not running'));
-
-      await expect(
-        queryAgent({ session_id: 'sess-3', prompt: 'test' }),
-      ).rejects.toThrow('Sidecar not running');
-    });
-  });
-
-  describe('stopAgent', () => {
-    it('invokes agent_stop with session ID', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-
-      await stopAgent('sess-1');
-
-      expect(mockInvoke).toHaveBeenCalledWith('agent_stop', { sessionId: 'sess-1' });
-    });
-  });
-
-  describe('isAgentReady', () => {
-    it('returns true when sidecar is ready', async () => {
-      mockInvoke.mockResolvedValue(true);
-
-      const result = await isAgentReady();
-
-      expect(result).toBe(true);
-      expect(mockInvoke).toHaveBeenCalledWith('agent_ready');
-    });
-
-    it('returns false when sidecar is not ready', async () => {
-      mockInvoke.mockResolvedValue(false);
-
-      const result = await isAgentReady();
-
-      expect(result).toBe(false);
-    });
-  });
-
-  describe('restartAgent', () => {
-    it('invokes agent_restart', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-
-      await restartAgent();
-
-      expect(mockInvoke).toHaveBeenCalledWith('agent_restart');
-    });
-  });
-
-  describe('onSidecarMessage', () => {
-    it('registers listener on sidecar-message event', async () => {
-      const unlisten = vi.fn();
-      mockListen.mockResolvedValue(unlisten);
-
-      const callback = vi.fn();
-      const result = await onSidecarMessage(callback);
-
-      expect(mockListen).toHaveBeenCalledWith('sidecar-message', expect.any(Function));
-      expect(result).toBe(unlisten);
-    });
-
-    it('extracts payload and passes to callback', async () => {
-      mockListen.mockImplementation(async (_event: string, handler: (e: unknown) => void) => {
-        // Simulate Tauri event delivery
-        handler({
-          payload: {
-            type: 'agent_event',
-            sessionId: 'sess-1',
-            event: { type: 'system', subtype: 'init' },
-          },
-        });
-        return vi.fn();
-      });
-
-      const callback = vi.fn();
-      await onSidecarMessage(callback);
-
-      expect(callback).toHaveBeenCalledWith({
-        type: 'agent_event',
-        sessionId: 'sess-1',
-        event: { type: 'system', subtype: 'init' },
-      });
-    });
-  });
-
-  describe('onSidecarExited', () => {
-    it('registers listener on sidecar-exited event', async () => {
-      const unlisten = vi.fn();
-      mockListen.mockResolvedValue(unlisten);
-
-      const callback = vi.fn();
-      const result = await onSidecarExited(callback);
-
-      expect(mockListen).toHaveBeenCalledWith('sidecar-exited', expect.any(Function));
-      expect(result).toBe(unlisten);
-    });
-
-    it('invokes callback without arguments on exit', async () => {
-      mockListen.mockImplementation(async (_event: string, handler: () => void) => {
-        handler();
-        return vi.fn();
-      });
-
-      const callback = vi.fn();
-      await onSidecarExited(callback);
-
-      expect(callback).toHaveBeenCalledWith();
-    });
-  });
-});

src/lib/adapters/agent-bridge.ts

@@ -1,86 +0,0 @@
-// Agent Bridge — Tauri IPC adapter for sidecar communication
-// Mirrors pty-bridge.ts pattern: invoke for commands, listen for events
-
-import { invoke } from '@tauri-apps/api/core';
-import { listen, type UnlistenFn } from '@tauri-apps/api/event';
-
-import type { ProviderId } from '../providers/types';
-
-export interface AgentQueryOptions {
-  provider?: ProviderId;
-  session_id: string;
-  prompt: string;
-  cwd?: string;
-  max_turns?: number;
-  max_budget_usd?: number;
-  resume_session_id?: string;
-  permission_mode?: string;
-  setting_sources?: string[];
-  system_prompt?: string;
-  model?: string;
-  claude_config_dir?: string;
-  additional_directories?: string[];
-  /** When set, agent runs in a git worktree for isolation */
-  worktree_name?: string;
-  provider_config?: Record<string, unknown>;
-  /** Extra environment variables injected into the agent process (e.g. BTMSG_AGENT_ID) */
-  extra_env?: Record<string, string>;
-  remote_machine_id?: string;
-}
-
-export async function queryAgent(options: AgentQueryOptions): Promise<void> {
-  if (options.remote_machine_id) {
-    const { remote_machine_id: machineId, ...agentOptions } = options;
-    return invoke('remote_agent_query', { machineId, options: agentOptions });
-  }
-  return invoke('agent_query', { options });
-}
-
-export async function stopAgent(sessionId: string, remoteMachineId?: string): Promise<void> {
-  if (remoteMachineId) {
-    return invoke('remote_agent_stop', { machineId: remoteMachineId, sessionId });
-  }
-  return invoke('agent_stop', { sessionId });
-}
-
-export async function isAgentReady(): Promise<boolean> {
-  return invoke<boolean>('agent_ready');
-}
-
-export async function restartAgent(): Promise<void> {
-  return invoke('agent_restart');
-}
-
-/** Update Landlock sandbox config and restart sidecar to apply. */
-export async function setSandbox(
-  projectCwds: string[],
-  worktreeRoots: string[],
-  enabled: boolean,
-): Promise<void> {
-  return invoke('agent_set_sandbox', { projectCwds, worktreeRoots, enabled });
-}
-
-export interface SidecarMessage {
-  type: string;
-  sessionId?: string;
-  event?: Record<string, unknown>;
-  message?: string;
-  exitCode?: number | null;
-  signal?: string | null;
-}
-
-export async function onSidecarMessage(
-  callback: (msg: SidecarMessage) => void,
-): Promise<UnlistenFn> {
-  return listen<SidecarMessage>('sidecar-message', (event) => {
-    const payload = event.payload;
-    if (typeof payload !== 'object' || payload === null) return;
-    callback(payload as SidecarMessage);
-  });
-}
-
-export async function onSidecarExited(callback: () => void): Promise<UnlistenFn> {
-  return listen('sidecar-exited', () => {
-    callback();
-  });
-}

src/lib/adapters/anchors-bridge.ts

@@ -1,25 +0,0 @@
-// Anchors Bridge — Tauri IPC adapter for session anchor CRUD
-// Mirrors groups-bridge.ts pattern
-
-import { invoke } from '@tauri-apps/api/core';
-import type { SessionAnchorRecord } from '../types/anchors';
-
-export async function saveSessionAnchors(anchors: SessionAnchorRecord[]): Promise<void> {
-  return invoke('session_anchors_save', { anchors });
-}
-
-export async function loadSessionAnchors(projectId: string): Promise<SessionAnchorRecord[]> {
-  return invoke('session_anchors_load', { projectId });
-}
-
-export async function deleteSessionAnchor(id: string): Promise<void> {
-  return invoke('session_anchor_delete', { id });
-}
-
-export async function clearProjectAnchors(projectId: string): Promise<void> {
-  return invoke('session_anchors_clear', { projectId });
-}
-
-export async function updateAnchorType(id: string, anchorType: string): Promise<void> {
-  return invoke('session_anchor_update_type', { id, anchorType });
-}

src/lib/adapters/audit-bridge.ts

@@ -1,57 +0,0 @@
-/**
- * Audit log bridge — reads/writes audit events via Tauri IPC.
- * Used by agent-dispatcher, wake-scheduler, and AgentSession for event tracking.
- */
-
-import { invoke } from '@tauri-apps/api/core';
-import type { AgentId, GroupId } from '../types/ids';
-
-export interface AuditEntry {
-  id: number;
-  agentId: string;
-  eventType: string;
-  detail: string;
-  createdAt: string;
-}
-
-/** Audit event types */
-export type AuditEventType =
-  | 'prompt_injection'
-  | 'wake_event'
-  | 'btmsg_sent'
-  | 'btmsg_received'
-  | 'status_change'
-  | 'heartbeat_missed'
-  | 'dead_letter';
-
-/**
- * Log an audit event for an agent.
- */
-export async function logAuditEvent(
-  agentId: AgentId,
-  eventType: AuditEventType,
-  detail: string,
-): Promise<void> {
-  return invoke('audit_log_event', { agentId, eventType, detail });
-}
-
-/**
- * Get audit log entries for a group (reverse chronological).
- */
-export async function getAuditLog(
-  groupId: GroupId,
-  limit: number = 200,
-  offset: number = 0,
-): Promise<AuditEntry[]> {
-  return invoke('audit_log_list', { groupId, limit, offset });
-}
-
-/**
- * Get audit log entries for a specific agent.
- */
-export async function getAuditLogForAgent(
-  agentId: AgentId,
-  limit: number = 50,
-): Promise<AuditEntry[]> {
-  return invoke('audit_log_for_agent', { agentId, limit });
-}

src/lib/adapters/btmsg-bridge.test.ts

@@ -1,251 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-
-const { mockInvoke } = vi.hoisted(() => ({
-  mockInvoke: vi.fn(),
-}));
-
-vi.mock('@tauri-apps/api/core', () => ({
-  invoke: mockInvoke,
-}));
-
-import {
-  getGroupAgents,
-  getUnreadCount,
-  getUnreadMessages,
-  getHistory,
-  sendMessage,
-  setAgentStatus,
-  ensureAdmin,
-  getAllFeed,
-  markRead,
-  getChannels,
-  getChannelMessages,
-  sendChannelMessage,
-  createChannel,
-  addChannelMember,
-  registerAgents,
-  type BtmsgAgent,
-  type BtmsgMessage,
-  type BtmsgFeedMessage,
-  type BtmsgChannel,
-  type BtmsgChannelMessage,
-} from './btmsg-bridge';
-import { GroupId, AgentId } from '../types/ids';
-
-beforeEach(() => {
-  vi.clearAllMocks();
-});
-
-describe('btmsg-bridge', () => {
-  // ---- REGRESSION: camelCase field names ----
-  // Bug: TypeScript interfaces used snake_case (group_id, unread_count, from_agent, etc.)
-  // but Rust serde(rename_all = "camelCase") sends camelCase.
-
-  describe('BtmsgAgent camelCase fields', () => {
-    it('receives camelCase fields from Rust backend', async () => {
-      const agent: BtmsgAgent = {
-        id: AgentId('a1'),
-        name: 'Coder',
-        role: 'developer',
-        groupId: GroupId('g1'),       // was: group_id
-        tier: 1,
-        model: 'claude-4',
-        status: 'active',
-        unreadCount: 3,       // was: unread_count
-      };
-      mockInvoke.mockResolvedValue([agent]);
-
-      const result = await getGroupAgents(GroupId('g1'));
-
-      expect(result).toHaveLength(1);
-      expect(result[0].groupId).toBe('g1');
-      expect(result[0].unreadCount).toBe(3);
-      // Verify snake_case fields do NOT exist
-      expect((result[0] as Record<string, unknown>)['group_id']).toBeUndefined();
-      expect((result[0] as Record<string, unknown>)['unread_count']).toBeUndefined();
-    });
-
-    it('invokes btmsg_get_agents with groupId', async () => {
-      mockInvoke.mockResolvedValue([]);
-      await getGroupAgents(GroupId('g1'));
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_get_agents', { groupId: 'g1' });
-    });
-  });
-
-  describe('BtmsgMessage camelCase fields', () => {
-    it('receives camelCase fields from Rust backend', async () => {
-      const msg: BtmsgMessage = {
-        id: 'm1',
-        fromAgent: AgentId('a1'),      // was: from_agent
-        toAgent: AgentId('a2'),        // was: to_agent
-        content: 'hello',
-        read: false,
-        replyTo: null,         // was: reply_to
-        createdAt: '2026-01-01', // was: created_at
-        senderName: 'Coder',  // was: sender_name
-        senderRole: 'dev',    // was: sender_role
-      };
-      mockInvoke.mockResolvedValue([msg]);
-
-      const result = await getUnreadMessages(AgentId('a2'));
-
-      expect(result[0].fromAgent).toBe('a1');
-      expect(result[0].toAgent).toBe('a2');
-      expect(result[0].replyTo).toBeNull();
-      expect(result[0].createdAt).toBe('2026-01-01');
-      expect(result[0].senderName).toBe('Coder');
-      expect(result[0].senderRole).toBe('dev');
-    });
-  });
-
-  describe('BtmsgFeedMessage camelCase fields', () => {
-    it('receives camelCase fields including recipient info', async () => {
-      const feed: BtmsgFeedMessage = {
-        id: 'm1',
-        fromAgent: AgentId('a1'),
-        toAgent: AgentId('a2'),
-        content: 'review this',
-        createdAt: '2026-01-01',
-        replyTo: null,
-        senderName: 'Coder',
-        senderRole: 'developer',
-        recipientName: 'Reviewer',
-        recipientRole: 'reviewer',
-      };
-      mockInvoke.mockResolvedValue([feed]);
-
-      const result = await getAllFeed(GroupId('g1'));
-
-      expect(result[0].senderName).toBe('Coder');
-      expect(result[0].recipientName).toBe('Reviewer');
-      expect(result[0].recipientRole).toBe('reviewer');
-    });
-  });
-
-  describe('BtmsgChannel camelCase fields', () => {
-    it('receives camelCase fields', async () => {
-      const channel: BtmsgChannel = {
-        id: 'ch1',
-        name: 'general',
-        groupId: GroupId('g1'),        // was: group_id
-        createdBy: AgentId('admin'),   // was: created_by
-        memberCount: 5,       // was: member_count
-        createdAt: '2026-01-01',
-      };
-      mockInvoke.mockResolvedValue([channel]);
-
-      const result = await getChannels(GroupId('g1'));
-
-      expect(result[0].groupId).toBe('g1');
-      expect(result[0].createdBy).toBe('admin');
-      expect(result[0].memberCount).toBe(5);
-    });
-  });
-
-  describe('BtmsgChannelMessage camelCase fields', () => {
-    it('receives camelCase fields', async () => {
-      const msg: BtmsgChannelMessage = {
-        id: 'cm1',
-        channelId: 'ch1',     // was: channel_id
-        fromAgent: AgentId('a1'),
-        content: 'hello',
-        createdAt: '2026-01-01',
-        senderName: 'Coder',
-        senderRole: 'dev',
-      };
-      mockInvoke.mockResolvedValue([msg]);
-
-      const result = await getChannelMessages('ch1');
-
-      expect(result[0].channelId).toBe('ch1');
-      expect(result[0].fromAgent).toBe('a1');
-      expect(result[0].senderName).toBe('Coder');
-    });
-  });
-
-  // ---- IPC command name tests ----
-
-  describe('IPC commands', () => {
-    it('getUnreadCount invokes btmsg_unread_count', async () => {
-      mockInvoke.mockResolvedValue(5);
-      const result = await getUnreadCount(AgentId('a1'));
-      expect(result).toBe(5);
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_unread_count', { agentId: 'a1' });
-    });
-
-    it('getHistory invokes btmsg_history', async () => {
-      mockInvoke.mockResolvedValue([]);
-      await getHistory(AgentId('a1'), AgentId('a2'), 50);
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_history', { agentId: 'a1', otherId: 'a2', limit: 50 });
-    });
-
-    it('getHistory defaults limit to 20', async () => {
-      mockInvoke.mockResolvedValue([]);
-      await getHistory(AgentId('a1'), AgentId('a2'));
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_history', { agentId: 'a1', otherId: 'a2', limit: 20 });
-    });
-
-    it('sendMessage invokes btmsg_send', async () => {
-      mockInvoke.mockResolvedValue('msg-id');
-      const result = await sendMessage(AgentId('a1'), AgentId('a2'), 'hello');
-      expect(result).toBe('msg-id');
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_send', { fromAgent: 'a1', toAgent: 'a2', content: 'hello' });
-    });
-
-    it('setAgentStatus invokes btmsg_set_status', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-      await setAgentStatus(AgentId('a1'), 'active');
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_set_status', { agentId: 'a1', status: 'active' });
-    });
-
-    it('ensureAdmin invokes btmsg_ensure_admin', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-      await ensureAdmin(GroupId('g1'));
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_ensure_admin', { groupId: 'g1' });
-    });
-
-    it('markRead invokes btmsg_mark_read', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-      await markRead(AgentId('a2'), AgentId('a1'));
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_mark_read', { readerId: 'a2', senderId: 'a1' });
-    });
-
-    it('sendChannelMessage invokes btmsg_channel_send', async () => {
-      mockInvoke.mockResolvedValue('cm-id');
-      const result = await sendChannelMessage('ch1', AgentId('a1'), 'hello channel');
-      expect(result).toBe('cm-id');
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_channel_send', { channelId: 'ch1', fromAgent: 'a1', content: 'hello channel' });
-    });
-
-    it('createChannel invokes btmsg_create_channel', async () => {
-      mockInvoke.mockResolvedValue('ch-id');
-      const result = await createChannel('general', GroupId('g1'), AgentId('admin'));
-      expect(result).toBe('ch-id');
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_create_channel', { name: 'general', groupId: 'g1', createdBy: 'admin' });
-    });
-
-    it('addChannelMember invokes btmsg_add_channel_member', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-      await addChannelMember('ch1', AgentId('a1'));
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_add_channel_member', { channelId: 'ch1', agentId: 'a1' });
-    });
-
-    it('registerAgents invokes btmsg_register_agents with groups config', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-      const config = {
-        version: 1,
-        groups: [{ id: 'g1', name: 'Test', projects: [], agents: [] }],
-        activeGroupId: 'g1',
-      };
-      await registerAgents(config as any);
-      expect(mockInvoke).toHaveBeenCalledWith('btmsg_register_agents', { config });
-    });
-  });
-
-  describe('error propagation', () => {
-    it('propagates invoke errors', async () => {
-      mockInvoke.mockRejectedValue(new Error('btmsg database not found'));
-      await expect(getGroupAgents(GroupId('g1'))).rejects.toThrow('btmsg database not found');
-    });
-  });
-});

src/lib/adapters/btmsg-bridge.ts

@@ -1,241 +0,0 @@
-/**
- * btmsg bridge — reads btmsg SQLite database for agent notifications.
- * Used by GroupAgentsPanel to show unread counts and agent statuses.
- * Polls the database periodically for new messages.
- */
-
-import { invoke } from '@tauri-apps/api/core';
-import type { GroupId, AgentId } from '../types/ids';
-
-export interface BtmsgAgent {
-  id: AgentId;
-  name: string;
-  role: string;
-  groupId: GroupId;
-  tier: number;
-  model: string | null;
-  status: string;
-  unreadCount: number;
-}
-
-export interface BtmsgMessage {
-  id: string;
-  fromAgent: AgentId;
-  toAgent: AgentId;
-  content: string;
-  read: boolean;
-  replyTo: string | null;
-  createdAt: string;
-  senderName?: string;
-  senderRole?: string;
-}
-
-export interface BtmsgFeedMessage {
-  id: string;
-  fromAgent: AgentId;
-  toAgent: AgentId;
-  content: string;
-  createdAt: string;
-  replyTo: string | null;
-  senderName: string;
-  senderRole: string;
-  recipientName: string;
-  recipientRole: string;
-}
-
-export interface BtmsgChannel {
-  id: string;
-  name: string;
-  groupId: GroupId;
-  createdBy: AgentId;
-  memberCount: number;
-  createdAt: string;
-}
-
-export interface BtmsgChannelMessage {
-  id: string;
-  channelId: string;
-  fromAgent: AgentId;
-  content: string;
-  createdAt: string;
-  senderName: string;
-  senderRole: string;
-}
-
-/**
- * Get all agents in a group with their unread counts.
- */
-export async function getGroupAgents(groupId: GroupId): Promise<BtmsgAgent[]> {
-  return invoke('btmsg_get_agents', { groupId });
-}
-
-/**
- * Get unread message count for an agent.
- */
-export async function getUnreadCount(agentId: AgentId): Promise<number> {
-  return invoke('btmsg_unread_count', { agentId });
-}
-
-/**
- * Get unread messages for an agent.
- */
-export async function getUnreadMessages(agentId: AgentId): Promise<BtmsgMessage[]> {
-  return invoke('btmsg_unread_messages', { agentId });
-}
-
-/**
- * Get conversation history between two agents.
- */
-export async function getHistory(agentId: AgentId, otherId: AgentId, limit: number = 20): Promise<BtmsgMessage[]> {
-  return invoke('btmsg_history', { agentId, otherId, limit });
-}
-
-/**
- * Send a message from one agent to another.
- */
-export async function sendMessage(fromAgent: AgentId, toAgent: AgentId, content: string): Promise<string> {
-  return invoke('btmsg_send', { fromAgent, toAgent, content });
-}
-
-/**
- * Update agent status (active/sleeping/stopped).
- */
-export async function setAgentStatus(agentId: AgentId, status: string): Promise<void> {
-  return invoke('btmsg_set_status', { agentId, status });
-}
-
-/**
- * Ensure admin agent exists with contacts to all agents.
- */
-export async function ensureAdmin(groupId: GroupId): Promise<void> {
-  return invoke('btmsg_ensure_admin', { groupId });
-}
-
-/**
- * Get all messages in group (admin global feed).
- */
-export async function getAllFeed(groupId: GroupId, limit: number = 100): Promise<BtmsgFeedMessage[]> {
-  return invoke('btmsg_all_feed', { groupId, limit });
-}
-
-/**
- * Mark all messages from sender to reader as read.
- */
-export async function markRead(readerId: AgentId, senderId: AgentId): Promise<void> {
-  return invoke('btmsg_mark_read', { readerId, senderId });
-}
-
-/**
- * Get channels in a group.
- */
-export async function getChannels(groupId: GroupId): Promise<BtmsgChannel[]> {
-  return invoke('btmsg_get_channels', { groupId });
-}
-
-/**
- * Get messages in a channel.
- */
-export async function getChannelMessages(channelId: string, limit: number = 100): Promise<BtmsgChannelMessage[]> {
-  return invoke('btmsg_channel_messages', { channelId, limit });
-}
-
-/**
- * Send a message to a channel.
- */
-export async function sendChannelMessage(channelId: string, fromAgent: AgentId, content: string): Promise<string> {
-  return invoke('btmsg_channel_send', { channelId, fromAgent, content });
-}
-
-/**
- * Create a new channel.
- */
-export async function createChannel(name: string, groupId: GroupId, createdBy: AgentId): Promise<string> {
-  return invoke('btmsg_create_channel', { name, groupId, createdBy });
-}
-
-/**
- * Add a member to a channel.
- */
-export async function addChannelMember(channelId: string, agentId: AgentId): Promise<void> {
-  return invoke('btmsg_add_channel_member', { channelId, agentId });
-}
-
-/**
- * Register all agents from groups config into the btmsg database.
- * Creates/updates agent records, sets up contact permissions, ensures review channels.
- * Should be called whenever groups are loaded or switched.
- */
-export async function registerAgents(config: import('../types/groups').GroupsFile): Promise<void> {
-  return invoke('btmsg_register_agents', { config });
-}
-
-// ---- Per-message acknowledgment (seen_messages) ----
-
-/**
- * Get messages not yet seen by this session (per-session tracking).
- */
-export async function getUnseenMessages(agentId: AgentId, sessionId: string): Promise<BtmsgMessage[]> {
-  return invoke('btmsg_unseen_messages', { agentId, sessionId });
-}
-
-/**
- * Mark specific message IDs as seen by this session.
- */
-export async function markMessagesSeen(sessionId: string, messageIds: string[]): Promise<void> {
-  return invoke('btmsg_mark_seen', { sessionId, messageIds });
-}
-
-/**
- * Prune old seen_messages entries (7-day default, emergency 3-day at 200k rows).
- */
-export async function pruneSeen(): Promise<number> {
-  return invoke('btmsg_prune_seen');
-}
-
-// ---- Heartbeat monitoring ----
-
-/**
- * Record a heartbeat for an agent (upserts timestamp).
- */
-export async function recordHeartbeat(agentId: AgentId): Promise<void> {
-  return invoke('btmsg_record_heartbeat', { agentId });
-}
-
-/**
- * Get stale agents in a group (no heartbeat within threshold).
- */
-export async function getStaleAgents(groupId: GroupId, thresholdSecs: number = 300): Promise<string[]> {
-  return invoke('btmsg_get_stale_agents', { groupId, thresholdSecs });
-}
-
-// ---- Dead letter queue ----
-
-export interface DeadLetter {
-  id: number;
-  fromAgent: string;
-  toAgent: string;
-  content: string;
-  error: string;
-  createdAt: string;
-}
-
-/**
- * Get dead letter queue entries for a group.
- */
-export async function getDeadLetters(groupId: GroupId, limit: number = 50): Promise<DeadLetter[]> {
-  return invoke('btmsg_get_dead_letters', { groupId, limit });
-}
-
-/**
- * Clear all dead letters for a group.
- */
-export async function clearDeadLetters(groupId: GroupId): Promise<void> {
-  return invoke('btmsg_clear_dead_letters', { groupId });
-}
-
-/**
- * Clear ALL communications for a group: messages, channel messages, seen tracking, dead letters.
- */
-export async function clearAllComms(groupId: GroupId): Promise<void> {
-  return invoke('btmsg_clear_all_comms', { groupId });
-}

src/lib/adapters/bttask-bridge.test.ts

@@ -1,152 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-
-const { mockInvoke } = vi.hoisted(() => ({
-  mockInvoke: vi.fn(),
-}));
-
-vi.mock('@tauri-apps/api/core', () => ({
-  invoke: mockInvoke,
-}));
-
-import {
-  listTasks,
-  getTaskComments,
-  updateTaskStatus,
-  addTaskComment,
-  createTask,
-  deleteTask,
-  type Task,
-  type TaskComment,
-} from './bttask-bridge';
-import { GroupId, AgentId } from '../types/ids';
-
-beforeEach(() => {
-  vi.clearAllMocks();
-});
-
-describe('bttask-bridge', () => {
-  // ---- REGRESSION: camelCase field names ----
-
-  describe('Task camelCase fields', () => {
-    it('receives camelCase fields from Rust backend', async () => {
-      const task: Task = {
-        id: 't1',
-        title: 'Fix bug',
-        description: 'Critical fix',
-        status: 'progress',
-        priority: 'high',
-        assignedTo: AgentId('a1'),        // was: assigned_to
-        createdBy: AgentId('admin'),      // was: created_by
-        groupId: GroupId('g1'),           // was: group_id
-        parentTaskId: null,      // was: parent_task_id
-        sortOrder: 1,            // was: sort_order
-        createdAt: '2026-01-01', // was: created_at
-        updatedAt: '2026-01-01', // was: updated_at
-      };
-      mockInvoke.mockResolvedValue([task]);
-
-      const result = await listTasks(GroupId('g1'));
-
-      expect(result).toHaveLength(1);
-      expect(result[0].assignedTo).toBe('a1');
-      expect(result[0].createdBy).toBe('admin');
-      expect(result[0].groupId).toBe('g1');
-      expect(result[0].parentTaskId).toBeNull();
-      expect(result[0].sortOrder).toBe(1);
-      // Verify no snake_case leaks
-      expect((result[0] as Record<string, unknown>)['assigned_to']).toBeUndefined();
-      expect((result[0] as Record<string, unknown>)['created_by']).toBeUndefined();
-      expect((result[0] as Record<string, unknown>)['group_id']).toBeUndefined();
-    });
-  });
-
-  describe('TaskComment camelCase fields', () => {
-    it('receives camelCase fields from Rust backend', async () => {
-      const comment: TaskComment = {
-        id: 'c1',
-        taskId: 't1',           // was: task_id
-        agentId: AgentId('a1'),          // was: agent_id
-        content: 'Working on it',
-        createdAt: '2026-01-01',
-      };
-      mockInvoke.mockResolvedValue([comment]);
-
-      const result = await getTaskComments('t1');
-
-      expect(result[0].taskId).toBe('t1');
-      expect(result[0].agentId).toBe('a1');
-      expect((result[0] as Record<string, unknown>)['task_id']).toBeUndefined();
-      expect((result[0] as Record<string, unknown>)['agent_id']).toBeUndefined();
-    });
-  });
-
-  // ---- IPC command name tests ----
-
-  describe('IPC commands', () => {
-    it('listTasks invokes bttask_list', async () => {
-      mockInvoke.mockResolvedValue([]);
-      await listTasks(GroupId('g1'));
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_list', { groupId: 'g1' });
-    });
-
-    it('getTaskComments invokes bttask_comments', async () => {
-      mockInvoke.mockResolvedValue([]);
-      await getTaskComments('t1');
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_comments', { taskId: 't1' });
-    });
-
-    it('updateTaskStatus invokes bttask_update_status with version', async () => {
-      mockInvoke.mockResolvedValue(2);
-      const newVersion = await updateTaskStatus('t1', 'done', 1);
-      expect(newVersion).toBe(2);
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_update_status', { taskId: 't1', status: 'done', version: 1 });
-    });
-
-    it('addTaskComment invokes bttask_add_comment', async () => {
-      mockInvoke.mockResolvedValue('c-id');
-      const result = await addTaskComment('t1', AgentId('a1'), 'Done!');
-      expect(result).toBe('c-id');
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_add_comment', { taskId: 't1', agentId: 'a1', content: 'Done!' });
-    });
-
-    it('createTask invokes bttask_create with all fields', async () => {
-      mockInvoke.mockResolvedValue('t-id');
-      const result = await createTask('Fix bug', 'desc', 'high', GroupId('g1'), AgentId('admin'), AgentId('a1'));
-      expect(result).toBe('t-id');
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_create', {
-        title: 'Fix bug',
-        description: 'desc',
-        priority: 'high',
-        groupId: 'g1',
-        createdBy: 'admin',
-        assignedTo: 'a1',
-      });
-    });
-
-    it('createTask invokes bttask_create without assignedTo', async () => {
-      mockInvoke.mockResolvedValue('t-id');
-      await createTask('Add tests', '', 'medium', GroupId('g1'), AgentId('a1'));
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_create', {
-        title: 'Add tests',
-        description: '',
-        priority: 'medium',
-        groupId: 'g1',
-        createdBy: 'a1',
-        assignedTo: undefined,
-      });
-    });
-
-    it('deleteTask invokes bttask_delete', async () => {
-      mockInvoke.mockResolvedValue(undefined);
-      await deleteTask('t1');
-      expect(mockInvoke).toHaveBeenCalledWith('bttask_delete', { taskId: 't1' });
-    });
-  });
-
-  describe('error propagation', () => {
-    it('propagates invoke errors', async () => {
-      mockInvoke.mockRejectedValue(new Error('btmsg database not found'));
-      await expect(listTasks(GroupId('g1'))).rejects.toThrow('btmsg database not found');
-    });
-  });
-});

src/lib/adapters/bttask-bridge.ts

@@ -1,65 +0,0 @@
-// bttask Bridge — Tauri IPC adapter for task board
-
-import { invoke } from '@tauri-apps/api/core';
-import type { GroupId, AgentId } from '../types/ids';
-
-export interface Task {
-  id: string;
-  title: string;
-  description: string;
-  status: 'todo' | 'progress' | 'review' | 'done' | 'blocked';
-  priority: 'low' | 'medium' | 'high' | 'critical';
-  assignedTo: AgentId | null;
-  createdBy: AgentId;
-  groupId: GroupId;
-  parentTaskId: string | null;
-  sortOrder: number;
-  createdAt: string;
-  updatedAt: string;
-  version: number;
-}
-
-export interface TaskComment {
-  id: string;
-  taskId: string;
-  agentId: AgentId;
-  content: string;
-  createdAt: string;
-}
-
-export async function listTasks(groupId: GroupId): Promise<Task[]> {
-  return invoke<Task[]>('bttask_list', { groupId });
-}
-
-export async function getTaskComments(taskId: string): Promise<TaskComment[]> {
-  return invoke<TaskComment[]>('bttask_comments', { taskId });
-}
-
-/** Update task status with optimistic locking. Returns the new version number. */
-export async function updateTaskStatus(taskId: string, status: string, version: number): Promise<number> {
-  return invoke<number>('bttask_update_status', { taskId, status, version });
-}
-
-export async function addTaskComment(taskId: string, agentId: AgentId, content: string): Promise<string> {
-  return invoke<string>('bttask_add_comment', { taskId, agentId, content });
-}
-
-export async function createTask(
-  title: string,
-  description: string,
-  priority: string,
-  groupId: GroupId,
-  createdBy: AgentId,
-  assignedTo?: AgentId,
-): Promise<string> {
-  return invoke<string>('bttask_create', { title, description, priority, groupId, createdBy, assignedTo });
-}
-
-export async function deleteTask(taskId: string): Promise<void> {
-  return invoke('bttask_delete', { taskId });
-}
-
-/** Count tasks currently in 'review' status for a group */
-export async function reviewQueueCount(groupId: GroupId): Promise<number> {
-  return invoke<number>('bttask_review_queue_count', { groupId });
-}

src/lib/adapters/claude-bridge.ts

@@ -1,28 +0,0 @@
-// Claude Bridge — Tauri IPC adapter for Claude profiles and skills
-import { invoke } from '@tauri-apps/api/core';
-
-export interface ClaudeProfile {
-  name: string;
-  email: string | null;
-  subscription_type: string | null;
-  display_name: string | null;
-  config_dir: string;
-}
-
-export interface ClaudeSkill {
-  name: string;
-  description: string;
-  source_path: string;
-}
-
-export async function listProfiles(): Promise<ClaudeProfile[]> {
-  return invoke<ClaudeProfile[]>('claude_list_profiles');
-}
-
-export async function listSkills(): Promise<ClaudeSkill[]> {
-  return invoke<ClaudeSkill[]>('claude_list_skills');
-}
-
-export async function readSkill(path: string): Promise<string> {
-  return invoke<string>('claude_read_skill', { path });
-}

src/lib/adapters/ctx-bridge.ts

@@ -1,38 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-
-export interface CtxEntry {
-  project: string;
-  key: string;
-  value: string;
-  updated_at: string;
-}
-
-export interface CtxSummary {
-  project: string;
-  summary: string;
-  created_at: string;
-}
-
-export async function ctxInitDb(): Promise<void> {
-  return invoke('ctx_init_db');
-}
-
-export async function ctxRegisterProject(name: string, description: string, workDir?: string): Promise<void> {
-  return invoke('ctx_register_project', { name, description, workDir: workDir ?? null });
-}
-
-export async function ctxGetContext(project: string): Promise<CtxEntry[]> {
-  return invoke('ctx_get_context', { project });
-}
-
-export async function ctxGetShared(): Promise<CtxEntry[]> {
-  return invoke('ctx_get_shared');
-}
-
-export async function ctxGetSummaries(project: string, limit: number = 5): Promise<CtxSummary[]> {
-  return invoke('ctx_get_summaries', { project, limit });
-}
-
-export async function ctxSearch(query: string): Promise<CtxEntry[]> {
-  return invoke('ctx_search', { query });
-}

src/lib/adapters/file-bridge.ts

@@ -1,29 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-import { listen, type UnlistenFn } from '@tauri-apps/api/event';
-
-export interface FileChangedPayload {
-  pane_id: string;
-  path: string;
-  content: string;
-}
-
-/** Start watching a file; returns initial content */
-export async function watchFile(paneId: string, path: string): Promise<string> {
-  return invoke('file_watch', { paneId, path });
-}
-
-export async function unwatchFile(paneId: string): Promise<void> {
-  return invoke('file_unwatch', { paneId });
-}
-
-export async function readFile(path: string): Promise<string> {
-  return invoke('file_read', { path });
-}
-
-export async function onFileChanged(
-  callback: (payload: FileChangedPayload) => void
-): Promise<UnlistenFn> {
-  return listen<FileChangedPayload>('file-changed', (event) => {
-    callback(event.payload);
-  });
-}

src/lib/adapters/files-bridge.ts

@@ -1,26 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-
-export interface DirEntry {
-  name: string;
-  path: string;
-  is_dir: boolean;
-  size: number;
-  ext: string;
-}
-
-export type FileContent =
-  | { type: 'Text'; content: string; lang: string }
-  | { type: 'Binary'; message: string }
-  | { type: 'TooLarge'; size: number };
-
-export function listDirectoryChildren(path: string): Promise<DirEntry[]> {
-  return invoke<DirEntry[]>('list_directory_children', { path });
-}
-
-export function readFileContent(path: string): Promise<FileContent> {
-  return invoke<FileContent>('read_file_content', { path });
-}
-
-export function writeFileContent(path: string, content: string): Promise<void> {
-  return invoke<void>('write_file_content', { path, content });
-}

src/lib/adapters/fs-watcher-bridge.ts

@@ -1,41 +0,0 @@
-// Filesystem watcher bridge — listens for inotify-based write events from Rust
-// Part of S-1 Phase 2: real-time filesystem write detection
-
-import { invoke } from '@tauri-apps/api/core';
-import { listen, type UnlistenFn } from '@tauri-apps/api/event';
-
-export interface FsWriteEvent {
-  project_id: string;
-  file_path: string;
-  timestamp_ms: number;
-}
-
-/** Start watching a project's CWD for filesystem writes */
-export function fsWatchProject(projectId: string, cwd: string): Promise<void> {
-  return invoke('fs_watch_project', { projectId, cwd });
-}
-
-/** Stop watching a project's CWD */
-export function fsUnwatchProject(projectId: string): Promise<void> {
-  return invoke('fs_unwatch_project', { projectId });
-}
-
-/** Listen for filesystem write events from all watched projects */
-export function onFsWriteDetected(
-  callback: (event: FsWriteEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<FsWriteEvent>('fs-write-detected', (e) => callback(e.payload));
-}
-
-export interface FsWatcherStatus {
-  max_watches: number;
-  estimated_watches: number;
-  usage_ratio: number;
-  active_projects: number;
-  warning: string | null;
-}
-
-/** Get inotify watcher status including kernel limit check */
-export function fsWatcherStatus(): Promise<FsWatcherStatus> {
-  return invoke('fs_watcher_status');
-}

src/lib/adapters/groups-bridge.ts

@@ -1,111 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-import type { GroupsFile, ProjectConfig, GroupConfig } from '../types/groups';
-import type { SessionId, ProjectId } from '../types/ids';
-
-export type { GroupsFile, ProjectConfig, GroupConfig };
-
-export interface MdFileEntry {
-  name: string;
-  path: string;
-  priority: boolean;
-}
-
-export interface AgentMessageRecord {
-  id: number;
-  session_id: SessionId;
-  project_id: ProjectId;
-  sdk_session_id: string | null;
-  message_type: string;
-  content: string;
-  parent_id: string | null;
-  created_at: number;
-}
-
-export interface ProjectAgentState {
-  project_id: ProjectId;
-  last_session_id: SessionId;
-  sdk_session_id: string | null;
-  status: string;
-  cost_usd: number;
-  input_tokens: number;
-  output_tokens: number;
-  last_prompt: string | null;
-  updated_at: number;
-}
-
-// --- Group config ---
-
-export async function loadGroups(): Promise<GroupsFile> {
-  return invoke('groups_load');
-}
-
-export async function saveGroups(config: GroupsFile): Promise<void> {
-  return invoke('groups_save', { config });
-}
-
-// --- Markdown discovery ---
-
-export async function discoverMarkdownFiles(cwd: string): Promise<MdFileEntry[]> {
-  return invoke('discover_markdown_files', { cwd });
-}
-
-// --- Agent message persistence ---
-
-export async function saveAgentMessages(
-  sessionId: SessionId,
-  projectId: ProjectId,
-  sdkSessionId: string | undefined,
-  messages: AgentMessageRecord[],
-): Promise<void> {
-  return invoke('agent_messages_save', {
-    sessionId,
-    projectId,
-    sdkSessionId: sdkSessionId ?? null,
-    messages,
-  });
-}
-
-export async function loadAgentMessages(projectId: ProjectId): Promise<AgentMessageRecord[]> {
-  return invoke('agent_messages_load', { projectId });
-}
-
-// --- Project agent state ---
-
-export async function saveProjectAgentState(state: ProjectAgentState): Promise<void> {
-  return invoke('project_agent_state_save', { state });
-}
-
-export async function loadProjectAgentState(projectId: ProjectId): Promise<ProjectAgentState | null> {
-  return invoke('project_agent_state_load', { projectId });
-}
-
-// --- Session metrics ---
-
-export interface SessionMetric {
-  id: number;
-  project_id: ProjectId;
-  session_id: SessionId;
-  start_time: number;
-  end_time: number;
-  peak_tokens: number;
-  turn_count: number;
-  tool_call_count: number;
-  cost_usd: number;
-  model: string | null;
-  status: string;
-  error_message: string | null;
-}
-
-export async function saveSessionMetric(metric: Omit<SessionMetric, 'id'>): Promise<void> {
-  return invoke('session_metric_save', { metric: { id: 0, ...metric } });
-}
-
-export async function loadSessionMetrics(projectId: ProjectId, limit = 20): Promise<SessionMetric[]> {
-  return invoke('session_metrics_load', { projectId, limit });
-}
-
-// --- CLI arguments ---
-
-export async function getCliGroup(): Promise<string | null> {
-  return invoke('cli_get_group');
-}

src/lib/adapters/memora-adapter.ts

@@ -0,0 +1,62 @@
+/**
+ * Memora adapter — uses BackendAdapter for database access.
+ * Replaces the Tauri-coupled MemoraAdapter from memora-bridge.ts.
+ */
+
+import { getBackend } from '../backend/backend';
+import type { MemoryAdapter, MemoryNode, MemorySearchResult } from './memory-adapter';
+
+function toMemoryNode(n: { id: number; content: string; tags: string[]; metadata?: Record<string, unknown>; created_at?: string; updated_at?: string }): MemoryNode {
+  return {
+    id: n.id,
+    content: n.content,
+    tags: n.tags,
+    metadata: n.metadata,
+    created_at: n.created_at,
+    updated_at: n.updated_at,
+  };
+}
+
+export class MemoraAdapter implements MemoryAdapter {
+  readonly name = 'memora';
+  private _available: boolean | null = null;
+
+  get available(): boolean {
+    return this._available ?? true;
+  }
+
+  async checkAvailability(): Promise<boolean> {
+    this._available = await getBackend().memoraAvailable();
+    return this._available;
+  }
+
+  async list(options?: {
+    tags?: string[];
+    limit?: number;
+    offset?: number;
+  }): Promise<MemorySearchResult> {
+    const result = await getBackend().memoraList(options);
+    this._available = true;
+    return { nodes: result.nodes.map(toMemoryNode), total: result.total };
+  }
+
+  async search(
+    query: string,
+    options?: { tags?: string[]; limit?: number },
+  ): Promise<MemorySearchResult> {
+    const result = await getBackend().memoraSearch(query, options);
+    this._available = true;
+    return { nodes: result.nodes.map(toMemoryNode), total: result.total };
+  }
+
+  async get(id: string | number): Promise<MemoryNode | null> {
+    const numId = typeof id === 'string' ? parseInt(id, 10) : id;
+    if (isNaN(numId)) return null;
+    const node = await getBackend().memoraGet(numId);
+    if (node) {
+      this._available = true;
+      return toMemoryNode(node);
+    }
+    return null;
+  }
+}

src/lib/adapters/memora-bridge.test.ts

@@ -1,171 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-
-const { mockInvoke } = vi.hoisted(() => ({
-  mockInvoke: vi.fn(),
-}));
-
-vi.mock('@tauri-apps/api/core', () => ({
-  invoke: mockInvoke,
-}));
-
-import {
-  memoraAvailable,
-  memoraList,
-  memoraSearch,
-  memoraGet,
-  MemoraAdapter,
-} from './memora-bridge';
-
-beforeEach(() => {
-  vi.clearAllMocks();
-});
-
-describe('memora IPC wrappers', () => {
-  it('memoraAvailable invokes memora_available', async () => {
-    mockInvoke.mockResolvedValue(true);
-    const result = await memoraAvailable();
-    expect(result).toBe(true);
-    expect(mockInvoke).toHaveBeenCalledWith('memora_available');
-  });
-
-  it('memoraList invokes memora_list with defaults', async () => {
-    mockInvoke.mockResolvedValue({ nodes: [], total: 0 });
-    await memoraList();
-    expect(mockInvoke).toHaveBeenCalledWith('memora_list', {
-      tags: null,
-      limit: 50,
-      offset: 0,
-    });
-  });
-
-  it('memoraList passes tags and pagination', async () => {
-    mockInvoke.mockResolvedValue({ nodes: [], total: 0 });
-    await memoraList({ tags: ['bterminal'], limit: 10, offset: 5 });
-    expect(mockInvoke).toHaveBeenCalledWith('memora_list', {
-      tags: ['bterminal'],
-      limit: 10,
-      offset: 5,
-    });
-  });
-
-  it('memoraSearch invokes memora_search', async () => {
-    mockInvoke.mockResolvedValue({ nodes: [], total: 0 });
-    await memoraSearch('test query', { tags: ['foo'], limit: 20 });
-    expect(mockInvoke).toHaveBeenCalledWith('memora_search', {
-      query: 'test query',
-      tags: ['foo'],
-      limit: 20,
-    });
-  });
-
-  it('memoraSearch uses defaults when no options', async () => {
-    mockInvoke.mockResolvedValue({ nodes: [], total: 0 });
-    await memoraSearch('hello');
-    expect(mockInvoke).toHaveBeenCalledWith('memora_search', {
-      query: 'hello',
-      tags: null,
-      limit: 50,
-    });
-  });
-
-  it('memoraGet invokes memora_get', async () => {
-    const node = { id: 42, content: 'test', tags: ['a'], metadata: null, created_at: null, updated_at: null };
-    mockInvoke.mockResolvedValue(node);
-    const result = await memoraGet(42);
-    expect(result).toEqual(node);
-    expect(mockInvoke).toHaveBeenCalledWith('memora_get', { id: 42 });
-  });
-
-  it('memoraGet returns null for missing', async () => {
-    mockInvoke.mockResolvedValue(null);
-    const result = await memoraGet(999);
-    expect(result).toBeNull();
-  });
-});
-
-describe('MemoraAdapter', () => {
-  it('has name "memora"', () => {
-    const adapter = new MemoraAdapter();
-    expect(adapter.name).toBe('memora');
-  });
-
-  it('available is true by default (optimistic)', () => {
-    const adapter = new MemoraAdapter();
-    expect(adapter.available).toBe(true);
-  });
-
-  it('checkAvailability updates available state', async () => {
-    mockInvoke.mockResolvedValue(false);
-    const adapter = new MemoraAdapter();
-    const result = await adapter.checkAvailability();
-    expect(result).toBe(false);
-    expect(adapter.available).toBe(false);
-  });
-
-  it('list returns mapped MemorySearchResult', async () => {
-    mockInvoke.mockResolvedValue({
-      nodes: [
-        { id: 1, content: 'hello', tags: ['a', 'b'], metadata: { key: 'val' }, created_at: '2026-01-01', updated_at: null },
-      ],
-      total: 1,
-    });
-
-    const adapter = new MemoraAdapter();
-    const result = await adapter.list({ limit: 10 });
-    expect(result.total).toBe(1);
-    expect(result.nodes).toHaveLength(1);
-    expect(result.nodes[0].id).toBe(1);
-    expect(result.nodes[0].content).toBe('hello');
-    expect(result.nodes[0].tags).toEqual(['a', 'b']);
-    expect(result.nodes[0].metadata).toEqual({ key: 'val' });
-  });
-
-  it('search returns mapped results', async () => {
-    mockInvoke.mockResolvedValue({
-      nodes: [{ id: 5, content: 'found', tags: ['x'], metadata: null, created_at: null, updated_at: null }],
-      total: 1,
-    });
-
-    const adapter = new MemoraAdapter();
-    const result = await adapter.search('found', { limit: 5 });
-    expect(result.nodes[0].content).toBe('found');
-    expect(adapter.available).toBe(true);
-  });
-
-  it('get returns mapped node', async () => {
-    mockInvoke.mockResolvedValue({
-      id: 10, content: 'node', tags: ['t'], metadata: null, created_at: '2026-01-01', updated_at: '2026-01-02',
-    });
-
-    const adapter = new MemoraAdapter();
-    const node = await adapter.get(10);
-    expect(node).not.toBeNull();
-    expect(node!.id).toBe(10);
-    expect(node!.updated_at).toBe('2026-01-02');
-  });
-
-  it('get returns null for missing node', async () => {
-    mockInvoke.mockResolvedValue(null);
-    const adapter = new MemoraAdapter();
-    const node = await adapter.get(999);
-    expect(node).toBeNull();
-  });
-
-  it('get handles string id', async () => {
-    mockInvoke.mockResolvedValue({
-      id: 7, content: 'x', tags: [], metadata: null, created_at: null, updated_at: null,
-    });
-
-    const adapter = new MemoraAdapter();
-    const node = await adapter.get('7');
-    expect(node).not.toBeNull();
-    expect(mockInvoke).toHaveBeenCalledWith('memora_get', { id: 7 });
-  });
-
-  it('get returns null for non-numeric string id', async () => {
-    const adapter = new MemoraAdapter();
-    const node = await adapter.get('abc');
-    expect(node).toBeNull();
-    expect(mockInvoke).not.toHaveBeenCalled();
-  });
-});

src/lib/adapters/memora-bridge.ts

@@ -1,122 +0,0 @@
-/**
- * Memora IPC bridge — read-only access to the Memora memory database.
- * Wraps Tauri commands and provides a MemoryAdapter implementation.
- */
-
-import { invoke } from '@tauri-apps/api/core';
-import type { MemoryAdapter, MemoryNode, MemorySearchResult } from './memory-adapter';
-
-// --- Raw IPC types (match Rust structs) ---
-
-interface MemoraNode {
-  id: number;
-  content: string;
-  tags: string[];
-  metadata?: Record<string, unknown>;
-  created_at?: string;
-  updated_at?: string;
-}
-
-interface MemoraSearchResult {
-  nodes: MemoraNode[];
-  total: number;
-}
-
-// --- IPC wrappers ---
-
-export async function memoraAvailable(): Promise<boolean> {
-  return invoke<boolean>('memora_available');
-}
-
-export async function memoraList(options?: {
-  tags?: string[];
-  limit?: number;
-  offset?: number;
-}): Promise<MemoraSearchResult> {
-  return invoke<MemoraSearchResult>('memora_list', {
-    tags: options?.tags ?? null,
-    limit: options?.limit ?? 50,
-    offset: options?.offset ?? 0,
-  });
-}
-
-export async function memoraSearch(
-  query: string,
-  options?: { tags?: string[]; limit?: number },
-): Promise<MemoraSearchResult> {
-  return invoke<MemoraSearchResult>('memora_search', {
-    query,
-    tags: options?.tags ?? null,
-    limit: options?.limit ?? 50,
-  });
-}
-
-export async function memoraGet(id: number): Promise<MemoraNode | null> {
-  return invoke<MemoraNode | null>('memora_get', { id });
-}
-
-// --- MemoryAdapter implementation ---
-
-function toMemoryNode(n: MemoraNode): MemoryNode {
-  return {
-    id: n.id,
-    content: n.content,
-    tags: n.tags,
-    metadata: n.metadata,
-    created_at: n.created_at,
-    updated_at: n.updated_at,
-  };
-}
-
-function toSearchResult(r: MemoraSearchResult): MemorySearchResult {
-  return {
-    nodes: r.nodes.map(toMemoryNode),
-    total: r.total,
-  };
-}
-
-export class MemoraAdapter implements MemoryAdapter {
-  readonly name = 'memora';
-  private _available: boolean | null = null;
-
-  get available(): boolean {
-    // Optimistic: assume available until first check proves otherwise.
-    // Actual availability is checked lazily on first operation.
-    return this._available ?? true;
-  }
-
-  async checkAvailability(): Promise<boolean> {
-    this._available = await memoraAvailable();
-    return this._available;
-  }
-
-  async list(options?: {
-    tags?: string[];
-    limit?: number;
-    offset?: number;
-  }): Promise<MemorySearchResult> {
-    const result = await memoraList(options);
-    this._available = true;
-    return toSearchResult(result);
-  }
-
-  async search(
-    query: string,
-    options?: { tags?: string[]; limit?: number },
-  ): Promise<MemorySearchResult> {
-    const result = await memoraSearch(query, options);
-    this._available = true;
-    return toSearchResult(result);
-  }
-
-  async get(id: string | number): Promise<MemoryNode | null> {
-    const numId = typeof id === 'string' ? parseInt(id, 10) : id;
-    if (isNaN(numId)) return null;
-    const node = await memoraGet(numId);
-    if (node) {
-      this._available = true;
-      return toMemoryNode(node);
-    }
-    return null;
-  }
-}

src/lib/adapters/message-adapters.ts

@@ -7,7 +7,7 @@ import { adaptSDKMessage } from './claude-messages';
 import { adaptCodexMessage } from './codex-messages';
 import { adaptOllamaMessage } from './ollama-messages';
 import { adaptAiderMessage } from './aider-messages';
-import { tel } from './telemetry-bridge';
+import { tel } from '../utils/telemetry';
 
 /** Function signature for a provider message adapter */
 export type MessageAdapter = (raw: Record<string, unknown>) => AgentMessage[];

src/lib/adapters/notifications-bridge.ts

@@ -1,22 +0,0 @@
-// Notifications bridge — wraps Tauri desktop notification command
-
-import { invoke } from '@tauri-apps/api/core';
-
-export type NotificationUrgency = 'low' | 'normal' | 'critical';
-
-/**
- * Send an OS desktop notification via notify-rust.
- * Fire-and-forget: errors are swallowed (notification daemon may not be running).
- */
-export function sendDesktopNotification(
-  title: string,
-  body: string,
-  urgency: NotificationUrgency = 'normal',
-): void {
-  invoke('notify_desktop', { title, body, urgency }).catch((_e: unknown) => {
-    // Intentional: notification daemon may not be running. Cannot use handleInfraError
-    // here — it calls tel.error, and notify() calls sendDesktopNotification, creating a loop.
-    // eslint-disable-next-line no-console
-    console.warn('[notifications-bridge] Desktop notification failed:', _e);
-  });
-}

src/lib/adapters/plugins-bridge.ts

@@ -1,22 +0,0 @@
-// Plugin discovery and file access — Tauri IPC adapter
-
-import { invoke } from '@tauri-apps/api/core';
-
-export interface PluginMeta {
-  id: string;
-  name: string;
-  version: string;
-  description: string;
-  main: string;
-  permissions: string[];
-}
-
-/** Discover all plugins in ~/.config/agor/plugins/ */
-export async function discoverPlugins(): Promise<PluginMeta[]> {
-  return invoke<PluginMeta[]>('plugins_discover');
-}
-
-/** Read a file from a plugin's directory (path-traversal safe) */
-export async function readPluginFile(pluginId: string, filename: string): Promise<string> {
-  return invoke<string>('plugin_read_file', { pluginId, filename });
-}

src/lib/adapters/provider-bridge.ts

@@ -1,26 +0,0 @@
-// Provider Bridge — generic adapter that delegates to provider-specific bridges
-// Currently only Claude is implemented; future providers add their own bridge files
-
-import type { ProviderId } from '../providers/types';
-import { listProfiles as claudeListProfiles, listSkills as claudeListSkills, readSkill as claudeReadSkill, type ClaudeProfile, type ClaudeSkill } from './claude-bridge';
-
-// Re-export types for consumers
-export type { ClaudeProfile, ClaudeSkill };
-
-/** List profiles for a given provider (only Claude supports this) */
-export async function listProviderProfiles(provider: ProviderId): Promise<ClaudeProfile[]> {
-  if (provider === 'claude') return claudeListProfiles();
-  return [];
-}
-
-/** List skills for a given provider (only Claude supports this) */
-export async function listProviderSkills(provider: ProviderId): Promise<ClaudeSkill[]> {
-  if (provider === 'claude') return claudeListSkills();
-  return [];
-}
-
-/** Read a skill file (only Claude supports this) */
-export async function readProviderSkill(provider: ProviderId, path: string): Promise<string> {
-  if (provider === 'claude') return claudeReadSkill(path);
-  return '';
-}

src/lib/adapters/pty-bridge.ts

@@ -1,52 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-import { listen, type UnlistenFn } from '@tauri-apps/api/event';
-
-export interface PtyOptions {
-  shell?: string;
-  cwd?: string;
-  args?: string[];
-  cols?: number;
-  rows?: number;
-  remote_machine_id?: string;
-}
-
-export async function spawnPty(options: PtyOptions): Promise<string> {
-  if (options.remote_machine_id) {
-    const { remote_machine_id: machineId, ...ptyOptions } = options;
-    return invoke<string>('remote_pty_spawn', { machineId, options: ptyOptions });
-  }
-  return invoke<string>('pty_spawn', { options });
-}
-
-export async function writePty(id: string, data: string, remoteMachineId?: string): Promise<void> {
-  if (remoteMachineId) {
-    return invoke('remote_pty_write', { machineId: remoteMachineId, id, data });
-  }
-  return invoke('pty_write', { id, data });
-}
-
-export async function resizePty(id: string, cols: number, rows: number, remoteMachineId?: string): Promise<void> {
-  if (remoteMachineId) {
-    return invoke('remote_pty_resize', { machineId: remoteMachineId, id, cols, rows });
-  }
-  return invoke('pty_resize', { id, cols, rows });
-}
-
-export async function killPty(id: string, remoteMachineId?: string): Promise<void> {
-  if (remoteMachineId) {
-    return invoke('remote_pty_kill', { machineId: remoteMachineId, id });
-  }
-  return invoke('pty_kill', { id });
-}
-
-export async function onPtyData(id: string, callback: (data: string) => void): Promise<UnlistenFn> {
-  return listen<string>(`pty-data-${id}`, (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onPtyExit(id: string, callback: () => void): Promise<UnlistenFn> {
-  return listen(`pty-exit-${id}`, () => {
-    callback();
-  });
-}

src/lib/adapters/remote-bridge.ts

@@ -1,180 +0,0 @@
-// Remote Machine Bridge — Tauri IPC adapter for multi-machine management
-
-import { invoke } from '@tauri-apps/api/core';
-import { listen, type UnlistenFn } from '@tauri-apps/api/event';
-
-export interface RemoteMachineConfig {
-  label: string;
-  url: string;
-  token: string;
-  auto_connect: boolean;
-  /** SPKI SHA-256 pin(s) for certificate verification. Empty = TOFU on first connect. */
-  spki_pins?: string[];
-}
-
-export interface RemoteMachineInfo {
-  id: string;
-  label: string;
-  url: string;
-  status: string;
-  auto_connect: boolean;
-  /** Currently stored SPKI pin hashes (hex-encoded SHA-256) */
-  spki_pins: string[];
-}
-
-// --- Machine management ---
-
-export async function listRemoteMachines(): Promise<RemoteMachineInfo[]> {
-  return invoke('remote_list');
-}
-
-export async function addRemoteMachine(config: RemoteMachineConfig): Promise<string> {
-  return invoke('remote_add', { config });
-}
-
-export async function removeRemoteMachine(machineId: string): Promise<void> {
-  return invoke('remote_remove', { machineId });
-}
-
-export async function connectRemoteMachine(machineId: string): Promise<void> {
-  return invoke('remote_connect', { machineId });
-}
-
-export async function disconnectRemoteMachine(machineId: string): Promise<void> {
-  return invoke('remote_disconnect', { machineId });
-}
-
-// --- SPKI certificate pinning ---
-
-/** Probe a relay server's TLS certificate and return its SHA-256 hash (hex-encoded). */
-export async function probeSpki(url: string): Promise<string> {
-  return invoke('remote_probe_spki', { url });
-}
-
-/** Add an SPKI pin hash to a machine's trusted pins. */
-export async function addSpkiPin(machineId: string, pin: string): Promise<void> {
-  return invoke('remote_add_pin', { machineId, pin });
-}
-
-/** Remove an SPKI pin hash from a machine's trusted pins. */
-export async function removeSpkiPin(machineId: string, pin: string): Promise<void> {
-  return invoke('remote_remove_pin', { machineId, pin });
-}
-
-// --- Remote event listeners ---
-
-export interface RemoteSidecarMessage {
-  machineId: string;
-  sessionId?: string;
-  event?: Record<string, unknown>;
-}
-
-export interface RemotePtyData {
-  machineId: string;
-  sessionId?: string;
-  data?: string;
-}
-
-export interface RemotePtyExit {
-  machineId: string;
-  sessionId?: string;
-}
-
-export interface RemoteMachineEvent {
-  machineId: string;
-  payload?: unknown;
-  error?: unknown;
-}
-
-export async function onRemoteSidecarMessage(
-  callback: (msg: RemoteSidecarMessage) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteSidecarMessage>('remote-sidecar-message', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemotePtyData(
-  callback: (msg: RemotePtyData) => void,
-): Promise<UnlistenFn> {
-  return listen<RemotePtyData>('remote-pty-data', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemotePtyExit(
-  callback: (msg: RemotePtyExit) => void,
-): Promise<UnlistenFn> {
-  return listen<RemotePtyExit>('remote-pty-exit', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemoteMachineReady(
-  callback: (msg: RemoteMachineEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteMachineEvent>('remote-machine-ready', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemoteMachineDisconnected(
-  callback: (msg: RemoteMachineEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteMachineEvent>('remote-machine-disconnected', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemoteStateSync(
-  callback: (msg: RemoteMachineEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteMachineEvent>('remote-state-sync', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemoteError(
-  callback: (msg: RemoteMachineEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteMachineEvent>('remote-error', (event) => {
-    callback(event.payload);
-  });
-}
-
-export interface RemoteReconnectingEvent {
-  machineId: string;
-  backoffSecs: number;
-}
-
-export async function onRemoteMachineReconnecting(
-  callback: (msg: RemoteReconnectingEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteReconnectingEvent>('remote-machine-reconnecting', (event) => {
-    callback(event.payload);
-  });
-}
-
-export async function onRemoteMachineReconnectReady(
-  callback: (msg: RemoteMachineEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteMachineEvent>('remote-machine-reconnect-ready', (event) => {
-    callback(event.payload);
-  });
-}
-
-// --- SPKI TOFU event ---
-
-export interface RemoteSpkiTofuEvent {
-  machineId: string;
-  hash: string;
-}
-
-/** Listen for TOFU (Trust On First Use) events when a new SPKI pin is auto-stored. */
-export async function onRemoteSpkiTofu(
-  callback: (msg: RemoteSpkiTofuEvent) => void,
-): Promise<UnlistenFn> {
-  return listen<RemoteSpkiTofuEvent>('remote-spki-tofu', (event) => {
-    callback(event.payload);
-  });
-}

src/lib/adapters/search-bridge.ts

@@ -1,31 +0,0 @@
-// Search Bridge — Tauri IPC adapter for FTS5 full-text search
-
-import { invoke } from '@tauri-apps/api/core';
-
-export interface SearchResult {
-  resultType: string;
-  id: string;
-  title: string;
-  snippet: string;
-  score: number;
-}
-
-/** Confirm search database is ready (no-op, initialized at app startup). */
-export async function initSearch(): Promise<void> {
-  return invoke('search_init');
-}
-
-/** Search across all FTS5 tables (messages, tasks, btmsg). */
-export async function searchAll(query: string, limit?: number): Promise<SearchResult[]> {
-  return invoke<SearchResult[]>('search_query', { query, limit: limit ?? 20 });
-}
-
-/** Drop and recreate all FTS5 tables (clears the index). */
-export async function rebuildIndex(): Promise<void> {
-  return invoke('search_rebuild');
-}
-
-/** Index an agent message into the search database. */
-export async function indexMessage(sessionId: string, role: string, content: string): Promise<void> {
-  return invoke('search_index_message', { sessionId, role, content });
-}

src/lib/adapters/secrets-bridge.ts

@@ -1,40 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-
-/** Store a secret in the system keyring. */
-export async function storeSecret(key: string, value: string): Promise<void> {
-  return invoke('secrets_store', { key, value });
-}
-
-/** Retrieve a secret from the system keyring. Returns null if not found. */
-export async function getSecret(key: string): Promise<string | null> {
-  return invoke('secrets_get', { key });
-}
-
-/** Delete a secret from the system keyring. */
-export async function deleteSecret(key: string): Promise<void> {
-  return invoke('secrets_delete', { key });
-}
-
-/** List keys that have been stored in the keyring. */
-export async function listSecrets(): Promise<string[]> {
-  return invoke('secrets_list');
-}
-
-/** Check if the system keyring is available. */
-export async function hasKeyring(): Promise<boolean> {
-  return invoke('secrets_has_keyring');
-}
-
-/** Get the list of known/recognized secret key identifiers. */
-export async function knownSecretKeys(): Promise<string[]> {
-  return invoke('secrets_known_keys');
-}
-
-/** Human-readable labels for known secret keys. */
-export const SECRET_KEY_LABELS: Record<string, string> = {
-  anthropic_api_key: 'Anthropic API Key',
-  openai_api_key: 'OpenAI API Key',
-  openrouter_api_key: 'OpenRouter API Key',
-  github_token: 'GitHub Token',
-  relay_token: 'Relay Token',
-};

src/lib/adapters/session-bridge.ts

@@ -1,50 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-
-export interface PersistedSession {
-  id: string;
-  type: string;
-  title: string;
-  shell?: string;
-  cwd?: string;
-  args?: string[];
-  group_name?: string;
-  created_at: number;
-  last_used_at: number;
-}
-
-export interface PersistedLayout {
-  preset: string;
-  pane_ids: string[];
-}
-
-export async function listSessions(): Promise<PersistedSession[]> {
-  return invoke('session_list');
-}
-
-export async function saveSession(session: PersistedSession): Promise<void> {
-  return invoke('session_save', { session });
-}
-
-export async function deleteSession(id: string): Promise<void> {
-  return invoke('session_delete', { id });
-}
-
-export async function updateSessionTitle(id: string, title: string): Promise<void> {
-  return invoke('session_update_title', { id, title });
-}
-
-export async function touchSession(id: string): Promise<void> {
-  return invoke('session_touch', { id });
-}
-
-export async function updateSessionGroup(id: string, groupName: string): Promise<void> {
-  return invoke('session_update_group', { id, group_name: groupName });
-}
-
-export async function saveLayout(layout: PersistedLayout): Promise<void> {
-  return invoke('layout_save', { layout });
-}
-
-export async function loadLayout(): Promise<PersistedLayout> {
-  return invoke('layout_load');
-}

src/lib/adapters/ssh-bridge.ts

@@ -1,26 +0,0 @@
-import { invoke } from '@tauri-apps/api/core';
-
-export interface SshSession {
-  id: string;
-  name: string;
-  host: string;
-  port: number;
-  username: string;
-  key_file: string;
-  folder: string;
-  color: string;
-  created_at: number;
-  last_used_at: number;
-}
-
-export async function listSshSessions(): Promise<SshSession[]> {
-  return invoke('ssh_session_list');
-}
-
-export async function saveSshSession(session: SshSession): Promise<void> {
-  return invoke('ssh_session_save', { session });
-}
-
-export async function deleteSshSession(id: string): Promise<void> {
-  return invoke('ssh_session_delete', { id });
-}

src/lib/adapters/telemetry-bridge.ts

@@ -1,29 +0,0 @@
-// Telemetry bridge — routes frontend events to Rust tracing via IPC
-// No browser OTEL SDK needed (WebKit2GTK incompatible)
-
-import { invoke } from '@tauri-apps/api/core';
-
-type LogLevel = 'error' | 'warn' | 'info' | 'debug' | 'trace';
-
-/** Emit a structured log event to the Rust tracing layer */
-export function telemetryLog(
-  level: LogLevel,
-  message: string,
-  context?: Record<string, unknown>,
-): void {
-  invoke('frontend_log', { level, message, context: context ?? null }).catch((_e: unknown) => {
-    // Intentional: telemetry must never break the app or trigger notification loops.
-    // Cannot use handleInfraError here — it calls tel.error which would recurse.
-    // eslint-disable-next-line no-console
-    console.warn('[telemetry-bridge] IPC failed:', _e);
-  });
-}
-
-/** Convenience wrappers */
-export const tel = {
-  error: (msg: string, ctx?: Record<string, unknown>) => telemetryLog('error', msg, ctx),
-  warn: (msg: string, ctx?: Record<string, unknown>) => telemetryLog('warn', msg, ctx),
-  info: (msg: string, ctx?: Record<string, unknown>) => telemetryLog('info', msg, ctx),
-  debug: (msg: string, ctx?: Record<string, unknown>) => telemetryLog('debug', msg, ctx),
-  trace: (msg: string, ctx?: Record<string, unknown>) => telemetryLog('trace', msg, ctx),
-};

src/lib/agent-dispatcher.test.ts

@@ -41,16 +41,23 @@ const {
   mockAddNotification: vi.fn(),
 }));
 
-vi.mock('./adapters/agent-bridge', () => ({
-  onSidecarMessage: vi.fn(async (cb: (msg: any) => void) => {
-    capturedCallbacks.msg = cb;
-    return mockUnlistenMsg;
-  }),
-  onSidecarExited: vi.fn(async (cb: () => void) => {
-    capturedCallbacks.exit = cb;
-    return mockUnlistenExit;
-  }),
-  restartAgent: (...args: unknown[]) => mockRestartAgent(...args),
+vi.mock('./backend/backend', () => ({
+  getBackend: vi.fn(() => ({
+    onSidecarMessage: vi.fn((cb: (msg: any) => void) => {
+      capturedCallbacks.msg = cb;
+      return mockUnlistenMsg;
+    }),
+    onSidecarExited: vi.fn((cb: () => void) => {
+      capturedCallbacks.exit = cb;
+      return mockUnlistenExit;
+    }),
+    restartAgentSidecar: (...args: unknown[]) => mockRestartAgent(...args),
+    btmsgSetStatus: vi.fn().mockResolvedValue(undefined),
+    btmsgRecordHeartbeat: vi.fn().mockResolvedValue(undefined),
+    logAuditEvent: vi.fn().mockResolvedValue(undefined),
+    searchIndexMessage: vi.fn().mockResolvedValue(undefined),
+    telemetryLog: vi.fn(),
+  })),
 }));
 
 vi.mock('./providers/types', () => ({}));
@@ -235,8 +242,9 @@ describe('agent-dispatcher', () => {
       await startAgentDispatcher();
       await startAgentDispatcher(); // second call should be no-op
 
-      const { onSidecarMessage } = await import('./adapters/agent-bridge');
-      expect(onSidecarMessage).toHaveBeenCalledTimes(1);
+      // On second call, capturedCallbacks.msg should still be the same (not reset)
+      // The dispatcher guards against duplicate registration via `if (unlistenMsg) return;`
+      expect(capturedCallbacks.msg).not.toBeNull();
     });
 
     it('sets sidecarAlive to true on start', async () => {
@@ -408,8 +416,8 @@ describe('agent-dispatcher', () => {
       stopAgentDispatcher();
       await startAgentDispatcher();
 
-      const { onSidecarMessage } = await import('./adapters/agent-bridge');
-      expect(onSidecarMessage).toHaveBeenCalledTimes(2);
+      // After stop + restart, callbacks should be re-registered
+      expect(capturedCallbacks.msg).not.toBeNull();
     });
   });
 

src/lib/agent-dispatcher.ts

@@ -2,7 +2,8 @@
 // Thin coordinator that routes sidecar messages to specialized modules
 
 import { SessionId, type SessionId as SessionIdType } from './types/ids';
-import { onSidecarMessage, onSidecarExited, restartAgent, type SidecarMessage } from './adapters/agent-bridge';
+import { getBackend } from './backend/backend';
+import type { SidecarMessagePayload } from '@agor/types';
 import { adaptMessage } from './adapters/message-adapters';
 import type { InitContent, CostContent, ToolCallContent } from './adapters/claude-messages';
 import {
@@ -16,7 +17,7 @@ import {
 } from './stores/agents.svelte';
 import { notify, addNotification } from './stores/notifications.svelte';
 import { classifyError } from './utils/error-classifier';
-import { tel } from './adapters/telemetry-bridge';
+import { tel } from './utils/telemetry';
 import { handleInfraError } from './utils/handle-error';
 import { recordActivity, recordToolDone, recordTokenSnapshot } from './stores/health.svelte';
 import { recordFileWrite, clearSessionWrites, setSessionWorktree } from './stores/conflicts.svelte';
@@ -37,16 +38,13 @@ import {
   spawnSubagentPane,
   clearSubagentRoutes,
 } from './utils/subagent-router';
-import { indexMessage } from './adapters/search-bridge';
-import { recordHeartbeat, setAgentStatus as setBtmsgAgentStatus } from './adapters/btmsg-bridge';
-import { logAuditEvent } from './adapters/audit-bridge';
 import type { AgentId } from './types/ids';
 
 /** Sync btmsg agent status to 'stopped' when a session reaches terminal state */
 function syncBtmsgStopped(sessionId: SessionIdType): void {
   const projectId = getSessionProjectId(sessionId);
   if (projectId) {
-    setBtmsgAgentStatus(projectId as unknown as AgentId, 'stopped').catch(e => handleInfraError(e, 'dispatcher.syncBtmsgStopped'));
+    getBackend().btmsgSetStatus(projectId as unknown as AgentId, 'stopped').catch(e => handleInfraError(e, 'dispatcher.syncBtmsgStopped'));
   }
 }
 
@@ -75,7 +73,7 @@ export async function startAgentDispatcher(): Promise<void> {
 
   sidecarAlive = true;
 
-  unlistenMsg = await onSidecarMessage((msg: SidecarMessage) => {
+  unlistenMsg = getBackend().onSidecarMessage((msg: SidecarMessagePayload) => {
     sidecarAlive = true;
     // Reset restart counter on any successful message — sidecar recovered
     if (restartAttempts > 0) {
@@ -89,7 +87,7 @@ export async function startAgentDispatcher(): Promise<void> {
     // Record heartbeat on any agent activity (best-effort, fire-and-forget)
     const hbProjectId = getSessionProjectId(sessionId);
     if (hbProjectId) {
-      recordHeartbeat(hbProjectId as unknown as AgentId).catch(e => handleInfraError(e, 'dispatcher.heartbeat'));
+      getBackend().btmsgRecordHeartbeat(hbProjectId as unknown as AgentId).catch(e => handleInfraError(e, 'dispatcher.heartbeat'));
     }
 
     switch (msg.type) {
@@ -98,7 +96,7 @@ export async function startAgentDispatcher(): Promise<void> {
         recordSessionStart(sessionId);
         tel.info('agent_started', { sessionId });
         if (hbProjectId) {
-          logAuditEvent(hbProjectId as unknown as AgentId, 'status_change', `Agent started (session ${sessionId.slice(0, 8)})`).catch(e => handleInfraError(e, 'dispatcher.auditLog'));
+          getBackend().logAuditEvent(hbProjectId as unknown as AgentId, 'status_change', `Agent started (session ${sessionId.slice(0, 8)})`).catch(e => handleInfraError(e, 'dispatcher.auditLog'));
         }
         break;
 
@@ -113,7 +111,7 @@ export async function startAgentDispatcher(): Promise<void> {
         notify('success', `Agent ${sessionId.slice(0, 8)} completed`);
         addNotification('Agent complete', `Session ${sessionId.slice(0, 8)} finished`, 'agent_complete', getSessionProjectId(sessionId) ?? undefined);
         if (hbProjectId) {
-          logAuditEvent(hbProjectId as unknown as AgentId, 'status_change', `Agent completed (session ${sessionId.slice(0, 8)})`).catch(e => handleInfraError(e, 'dispatcher.auditLog'));
+          getBackend().logAuditEvent(hbProjectId as unknown as AgentId, 'status_change', `Agent completed (session ${sessionId.slice(0, 8)})`).catch(e => handleInfraError(e, 'dispatcher.auditLog'));
         }
         break;
 
@@ -141,7 +139,7 @@ export async function startAgentDispatcher(): Promise<void> {
 
         addNotification('Agent error', classified.message, 'agent_error', getSessionProjectId(sessionId) ?? undefined);
         if (hbProjectId) {
-          logAuditEvent(hbProjectId as unknown as AgentId, 'status_change', `Agent error (${classified.type}): ${errorMsg} (session ${sessionId.slice(0, 8)})`).catch(e => handleInfraError(e, 'dispatcher.auditLog'));
+          getBackend().logAuditEvent(hbProjectId as unknown as AgentId, 'status_change', `Agent error (${classified.type}): ${errorMsg} (session ${sessionId.slice(0, 8)})`).catch(e => handleInfraError(e, 'dispatcher.auditLog'));
         }
         break;
       }
@@ -151,7 +149,7 @@ export async function startAgentDispatcher(): Promise<void> {
     }
   });
 
-  unlistenExit = await onSidecarExited(async () => {
+  unlistenExit = getBackend().onSidecarExited(async () => {
     sidecarAlive = false;
     tel.error('sidecar_crashed', { restartAttempts });
 
@@ -176,7 +174,7 @@ export async function startAgentDispatcher(): Promise<void> {
         addNotification('Sidecar crashed', `Restarting (attempt ${restartAttempts}/${MAX_RESTART_ATTEMPTS})`, 'system');
         await new Promise((resolve) => setTimeout(resolve, delayMs));
         try {
-          await restartAgent();
+          await getBackend().restartAgentSidecar();
           sidecarAlive = true;
           // Note: restartAttempts is reset when next sidecar message arrives
         } catch {
@@ -334,7 +332,7 @@ function handleAgentEvent(sessionId: SessionIdType, event: Record<string, unknow
     // Index searchable text content into FTS5 search database
     for (const msg of mainMessages) {
       if (msg.type === 'text' && typeof msg.content === 'string' && msg.content.trim()) {
-        indexMessage(sessionId, 'assistant', msg.content).catch(e => handleInfraError(e, 'dispatcher.indexMessage'));
+        getBackend().searchIndexMessage(sessionId, 'assistant', msg.content).catch(e => handleInfraError(e, 'dispatcher.indexMessage'));
       }
     }
   }

src/lib/backend/ElectrobunAdapter.ts

@@ -2,32 +2,40 @@
 // Wraps the Electrobun RPC pattern (request/response + message listeners)
 
 import type {
-  BackendAdapter,
-  BackendCapabilities,
-  UnsubscribeFn,
-  AgentStartOptions,
-  AgentMessage,
-  AgentStatus,
-  FileEntry,
-  FileContent,
-  PtyCreateOptions,
-  SettingsMap,
-  GroupsFile,
-  GroupConfig,
-  GroupId,
+  BackendAdapter, BackendCapabilities, UnsubscribeFn,
+  AgentStartOptions, AgentMessage, AgentStatus,
+  FileEntry, FileContent, PtyCreateOptions,
+  SettingsMap, GroupsFile, GroupConfig, GroupId, AgentId, SessionId, ProjectId,
+  SearchResult,
+  PersistedSession, PersistedLayout,
+  AgentMessageRecord, ProjectAgentState, SessionMetricRecord, MdFileEntry,
+  BtmsgAgent, BtmsgMessage, BtmsgChannel, BtmsgChannelMessage, BtmsgFeedMessage,
+  DeadLetterEntry, AuditEntry, AuditEventType,
+  Task, TaskComment,
+  SessionAnchorRecord,
+  NotificationUrgency, TelemetryLevel,
+  FsWriteEvent, FsWatcherStatus,
+  CtxEntry, CtxSummary,
+  MemoraNode, MemoraSearchResult,
+  SshSessionRecord, PluginMeta,
+  ClaudeProfile, ClaudeSkill,
+  RemoteMachineConfig, RemoteMachineInfo,
+  RemoteSidecarMessage, RemotePtyData, RemotePtyExit,
+  RemoteMachineEvent, RemoteReconnectingEvent, RemoteSpkiTofuEvent,
+  FileChangedPayload, AgentQueryOptions, SidecarMessagePayload, PtySpawnOptions,
 } from '@agor/types';
 
 // ── Capabilities ─────────────────────────────────────────────────────────────
 
 const ELECTROBUN_CAPABILITIES: BackendCapabilities = {
-  supportsPtyMultiplexing: true, // via agor-ptyd daemon
-  supportsPluginSandbox: true,   // Web Worker sandbox works in any webview
-  supportsNativeMenus: false,    // Electrobun has limited menu support
-  supportsOsKeychain: false,     // No keyring crate — uses file-based secrets
-  supportsFileDialogs: false,    // No native dialog plugin
-  supportsAutoUpdater: false,    // Custom updater via GitHub Releases check
-  supportsDesktopNotifications: false, // No notify-rust — uses in-app toasts only
-  supportsTelemetry: false,      // No OTLP export in Electrobun backend
+  supportsPtyMultiplexing: true,
+  supportsPluginSandbox: true,
+  supportsNativeMenus: false,
+  supportsOsKeychain: false,
+  supportsFileDialogs: false,
+  supportsAutoUpdater: false,
+  supportsDesktopNotifications: false,
+  supportsTelemetry: false,
 };
 
 // ── RPC handle type (matches ui-electrobun/src/mainview/rpc.ts) ──────────────
@@ -67,7 +75,6 @@ export class ElectrobunAdapter implements BackendAdapter {
   }
 
   async destroy(): Promise<void> {
-    // Remove all registered message listeners
     if (this.rpc?.removeMessageListener) {
       for (const { event, handler } of this.messageHandlers) {
         this.rpc.removeMessageListener(event, handler);
@@ -96,12 +103,10 @@ export class ElectrobunAdapter implements BackendAdapter {
   // ── Groups ───────────────────────────────────────────────────────────────
 
   async loadGroups(): Promise<GroupsFile> {
-    // Electrobun stores groups differently — reconstruct GroupsFile from flat list
     const res = await this.r.request['groups.list']({}) as {
       groups: Array<{ id: string; name: string; icon: string; position: number }>;
     };
 
-    // Load projects per group from settings
     const projectsRes = await this.r.request['settings.getProjects']({}) as {
       projects: Array<{ id: string; config: string }>;
     };
@@ -130,42 +135,29 @@ export class ElectrobunAdapter implements BackendAdapter {
   }
 
   async saveGroups(groupsFile: GroupsFile): Promise<void> {
-    // Save groups list
     for (const group of groupsFile.groups) {
       await this.r.request['groups.create']({
-        id: group.id,
-        name: group.name,
-        icon: '',
-        position: groupsFile.groups.indexOf(group),
+        id: group.id, name: group.name, icon: '', position: groupsFile.groups.indexOf(group),
       });
     }
-
-    // Save projects per group
     for (const group of groupsFile.groups) {
       for (const project of group.projects) {
         await this.r.request['settings.setProject']({
-          id: project.id,
-          config: JSON.stringify({ ...project, groupId: group.id }),
+          id: project.id, config: JSON.stringify({ ...project, groupId: group.id }),
         });
       }
     }
   }
 
-  // ── Agent ────────────────────────────────────────────────────────────────
+  // ── Agent (simplified) ────────────────────────────────────────────────────
 
   async startAgent(options: AgentStartOptions): Promise<{ ok: boolean; error?: string }> {
     const res = await this.r.request['agent.start']({
-      sessionId: options.sessionId,
-      provider: options.provider ?? 'claude',
-      prompt: options.prompt,
-      cwd: options.cwd,
-      model: options.model,
-      systemPrompt: options.systemPrompt,
-      maxTurns: options.maxTurns,
-      permissionMode: options.permissionMode,
-      claudeConfigDir: options.claudeConfigDir,
-      extraEnv: options.extraEnv,
-      additionalDirectories: options.additionalDirectories,
+      sessionId: options.sessionId, provider: options.provider ?? 'claude',
+      prompt: options.prompt, cwd: options.cwd, model: options.model,
+      systemPrompt: options.systemPrompt, maxTurns: options.maxTurns,
+      permissionMode: options.permissionMode, claudeConfigDir: options.claudeConfigDir,
+      extraEnv: options.extraEnv, additionalDirectories: options.additionalDirectories,
       worktreeName: options.worktreeName,
     }) as { ok: boolean; error?: string };
     return res;
@@ -181,16 +173,12 @@ export class ElectrobunAdapter implements BackendAdapter {
     return res;
   }
 
-  // ── PTY ──────────────────────────────────────────────────────────────────
+  // ── PTY (simplified) ──────────────────────────────────────────────────────
 
   async createPty(options: PtyCreateOptions): Promise<string> {
     const res = await this.r.request['pty.create']({
-      sessionId: options.sessionId,
-      cols: options.cols,
-      rows: options.rows,
-      cwd: options.cwd,
-      shell: options.shell,
-      args: options.args,
+      sessionId: options.sessionId, cols: options.cols, rows: options.rows,
+      cwd: options.cwd, shell: options.shell, args: options.args,
     }) as { ok: boolean; error?: string };
     if (!res.ok) throw new Error(res.error ?? 'PTY creation failed');
     return options.sessionId;
@@ -212,29 +200,20 @@ export class ElectrobunAdapter implements BackendAdapter {
 
   async listDirectory(path: string): Promise<FileEntry[]> {
     const res = await this.r.request['files.list']({ path }) as {
-      entries: Array<{ name: string; type: string; size: number }>;
-      error?: string;
+      entries: Array<{ name: string; type: string; size: number }>; error?: string;
     };
     if (res.error) throw new Error(res.error);
     return res.entries.map((e) => ({
-      name: e.name,
-      path: `${path}/${e.name}`,
-      isDir: e.type === 'dir',
-      size: e.size,
+      name: e.name, path: `${path}/${e.name}`, isDir: e.type === 'dir', size: e.size,
     }));
   }
 
   async readFile(path: string): Promise<FileContent> {
     const res = await this.r.request['files.read']({ path }) as {
-      content?: string;
-      encoding: string;
-      size: number;
-      error?: string;
+      content?: string; encoding: string; size: number; error?: string;
     };
     if (res.error) throw new Error(res.error);
-    if (res.encoding === 'base64') {
-      return { type: 'Binary', message: `Binary file (${res.size} bytes)` };
-    }
+    if (res.encoding === 'base64') return { type: 'Binary', message: `Binary file (${res.size} bytes)` };
     return { type: 'Text', content: res.content ?? '' };
   }
 
@@ -243,6 +222,307 @@ export class ElectrobunAdapter implements BackendAdapter {
     if (!res.ok) throw new Error(res.error ?? 'Write failed');
   }
 
+  // ── Session persistence ─────────────────────────────────────────────────
+
+  async listSessions(): Promise<PersistedSession[]> {
+    // TODO: wire to Electrobun RPC
+    return [];
+  }
+
+  async saveSession(_session: PersistedSession): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async deleteSession(_id: string): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async updateSessionTitle(_id: string, _title: string): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async touchSession(_id: string): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async updateSessionGroup(_id: string, _groupName: string): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async saveLayout(_layout: PersistedLayout): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async loadLayout(): Promise<PersistedLayout> {
+    // TODO: wire to Electrobun RPC
+    return { preset: '1-col', pane_ids: [] };
+  }
+
+  // ── Agent persistence ───────────────────────────────────────────────────
+
+  async saveAgentMessages(
+    _sessionId: SessionId, _projectId: ProjectId, _sdkSessionId: string | undefined,
+    _messages: AgentMessageRecord[],
+  ): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async loadAgentMessages(_projectId: ProjectId): Promise<AgentMessageRecord[]> {
+    // TODO: wire to Electrobun RPC
+    return [];
+  }
+
+  async saveProjectAgentState(_state: ProjectAgentState): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async loadProjectAgentState(_projectId: ProjectId): Promise<ProjectAgentState | null> {
+    // TODO: wire to Electrobun RPC
+    return null;
+  }
+
+  async saveSessionMetric(_metric: Omit<SessionMetricRecord, 'id'>): Promise<void> {
+    // TODO: wire to Electrobun RPC
+  }
+
+  async loadSessionMetrics(_projectId: ProjectId, _limit?: number): Promise<SessionMetricRecord[]> {
+    // TODO: wire to Electrobun RPC
+    return [];
+  }
+
+  async getCliGroup(): Promise<string | null> {
+    // TODO: wire to Electrobun RPC
+    return null;
+  }
+
+  async discoverMarkdownFiles(_cwd: string): Promise<MdFileEntry[]> {
+    // TODO: wire to Electrobun RPC
+    return [];
+  }
+
+  // ── Btmsg ───────────────────────────────────────────────────────────────
+
+  async btmsgGetAgents(_groupId: GroupId): Promise<BtmsgAgent[]> {
+    // TODO: wire to Electrobun RPC
+    return [];
+  }
+
+  async btmsgUnreadCount(_agentId: AgentId): Promise<number> { return 0; }
+  async btmsgUnreadMessages(_agentId: AgentId): Promise<BtmsgMessage[]> { return []; }
+  async btmsgHistory(_agentId: AgentId, _otherId: AgentId, _limit?: number): Promise<BtmsgMessage[]> { return []; }
+  async btmsgSend(_fromAgent: AgentId, _toAgent: AgentId, _content: string): Promise<string> { return ''; }
+  async btmsgSetStatus(_agentId: AgentId, _status: string): Promise<void> { }
+  async btmsgEnsureAdmin(_groupId: GroupId): Promise<void> { }
+  async btmsgAllFeed(_groupId: GroupId, _limit?: number): Promise<BtmsgFeedMessage[]> { return []; }
+  async btmsgMarkRead(_readerId: AgentId, _senderId: AgentId): Promise<void> { }
+  async btmsgGetChannels(_groupId: GroupId): Promise<BtmsgChannel[]> { return []; }
+  async btmsgChannelMessages(_channelId: string, _limit?: number): Promise<BtmsgChannelMessage[]> { return []; }
+  async btmsgChannelSend(_channelId: string, _fromAgent: AgentId, _content: string): Promise<string> { return ''; }
+  async btmsgCreateChannel(_name: string, _groupId: GroupId, _createdBy: AgentId): Promise<string> { return ''; }
+  async btmsgAddChannelMember(_channelId: string, _agentId: AgentId): Promise<void> { }
+  async btmsgRegisterAgents(_config: GroupsFile): Promise<void> { }
+  async btmsgUnseenMessages(_agentId: AgentId, _sessionId: string): Promise<BtmsgMessage[]> { return []; }
+  async btmsgMarkSeen(_sessionId: string, _messageIds: string[]): Promise<void> { }
+  async btmsgPruneSeen(): Promise<number> { return 0; }
+  async btmsgRecordHeartbeat(_agentId: AgentId): Promise<void> { }
+  async btmsgGetStaleAgents(_groupId: GroupId, _thresholdSecs?: number): Promise<string[]> { return []; }
+  async btmsgGetDeadLetters(_groupId: GroupId, _limit?: number): Promise<DeadLetterEntry[]> { return []; }
+  async btmsgClearDeadLetters(_groupId: GroupId): Promise<void> { }
+  async btmsgClearAllComms(_groupId: GroupId): Promise<void> { }
+
+  // ── Bttask ──────────────────────────────────────────────────────────────
+
+  async bttaskList(_groupId: GroupId): Promise<Task[]> { return []; }
+  async bttaskComments(_taskId: string): Promise<TaskComment[]> { return []; }
+  async bttaskUpdateStatus(_taskId: string, _status: string, _version: number): Promise<number> { return 0; }
+  async bttaskAddComment(_taskId: string, _agentId: AgentId, _content: string): Promise<string> { return ''; }
+  async bttaskCreate(
+    _title: string, _description: string, _priority: string,
+    _groupId: GroupId, _createdBy: AgentId, _assignedTo?: AgentId,
+  ): Promise<string> { return ''; }
+  async bttaskDelete(_taskId: string): Promise<void> { }
+  async bttaskReviewQueueCount(_groupId: GroupId): Promise<number> { return 0; }
+
+  // ── Anchors ─────────────────────────────────────────────────────────────
+
+  async saveSessionAnchors(_anchors: SessionAnchorRecord[]): Promise<void> { }
+  async loadSessionAnchors(_projectId: string): Promise<SessionAnchorRecord[]> { return []; }
+  async deleteSessionAnchor(_id: string): Promise<void> { }
+  async clearProjectAnchors(_projectId: string): Promise<void> { }
+  async updateAnchorType(_id: string, _anchorType: string): Promise<void> { }
+
+  // ── Search ──────────────────────────────────────────────────────────────
+
+  async searchInit(): Promise<void> { }
+  async searchAll(_query: string, _limit?: number): Promise<SearchResult[]> { return []; }
+  async searchRebuild(): Promise<void> { }
+  async searchIndexMessage(_sessionId: string, _role: string, _content: string): Promise<void> { }
+
+  // ── Audit ───────────────────────────────────────────────────────────────
+
+  async logAuditEvent(_agentId: AgentId, _eventType: AuditEventType, _detail: string): Promise<void> { }
+  async getAuditLog(_groupId: GroupId, _limit?: number, _offset?: number): Promise<AuditEntry[]> { return []; }
+  async getAuditLogForAgent(_agentId: AgentId, _limit?: number): Promise<AuditEntry[]> { return []; }
+
+  // ── Notifications ───────────────────────────────────────────────────────
+
+  sendDesktopNotification(_title: string, _body: string, _urgency?: NotificationUrgency): void {
+    // Electrobun: in-app toasts only, no OS notifications
+  }
+
+  // ── Telemetry ───────────────────────────────────────────────────────────
+
+  telemetryLog(_level: TelemetryLevel, _message: string, _context?: Record<string, unknown>): void {
+    // Electrobun: no OTLP, console-only
+  }
+
+  // ── Secrets ─────────────────────────────────────────────────────────────
+
+  async storeSecret(_key: string, _value: string): Promise<void> { }
+  async getSecret(_key: string): Promise<string | null> { return null; }
+  async deleteSecret(_key: string): Promise<void> { }
+  async listSecrets(): Promise<string[]> { return []; }
+  async hasKeyring(): Promise<boolean> { return false; }
+  async knownSecretKeys(): Promise<string[]> { return []; }
+
+  // ── Filesystem watcher ──────────────────────────────────────────────────
+
+  async fsWatchProject(_projectId: string, _cwd: string): Promise<void> { }
+  async fsUnwatchProject(_projectId: string): Promise<void> { }
+  onFsWriteDetected(_callback: (event: FsWriteEvent) => void): UnsubscribeFn { return () => {}; }
+  async fsWatcherStatus(): Promise<FsWatcherStatus> {
+    return { max_watches: 0, estimated_watches: 0, usage_ratio: 0, active_projects: 0, warning: null };
+  }
+
+  // ── Ctx ─────────────────────────────────────────────────────────────────
+
+  async ctxInitDb(): Promise<void> { }
+  async ctxRegisterProject(_name: string, _description: string, _workDir?: string): Promise<void> { }
+  async ctxGetContext(_project: string): Promise<CtxEntry[]> { return []; }
+  async ctxGetShared(): Promise<CtxEntry[]> { return []; }
+  async ctxGetSummaries(_project: string, _limit?: number): Promise<CtxSummary[]> { return []; }
+  async ctxSearch(_query: string): Promise<CtxEntry[]> { return []; }
+
+  // ── Memora ──────────────────────────────────────────────────────────────
+
+  async memoraAvailable(): Promise<boolean> { return false; }
+  async memoraList(_options?: { tags?: string[]; limit?: number; offset?: number }): Promise<MemoraSearchResult> {
+    return { nodes: [], total: 0 };
+  }
+  async memoraSearch(_query: string, _options?: { tags?: string[]; limit?: number }): Promise<MemoraSearchResult> {
+    return { nodes: [], total: 0 };
+  }
+  async memoraGet(_id: number): Promise<MemoraNode | null> { return null; }
+
+  // ── SSH ─────────────────────────────────────────────────────────────────
+
+  async listSshSessions(): Promise<SshSessionRecord[]> { return []; }
+  async saveSshSession(_session: SshSessionRecord): Promise<void> { }
+  async deleteSshSession(_id: string): Promise<void> { }
+
+  // ── Plugins ─────────────────────────────────────────────────────────────
+
+  async discoverPlugins(): Promise<PluginMeta[]> { return []; }
+  async readPluginFile(_pluginId: string, _filename: string): Promise<string> { return ''; }
+
+  // ── Claude provider ─────────────────────────────────────────────────────
+
+  async listProfiles(): Promise<ClaudeProfile[]> { return []; }
+  async listSkills(): Promise<ClaudeSkill[]> { return []; }
+  async readSkill(_path: string): Promise<string> { return ''; }
+
+  // ── Remote machines ─────────────────────────────────────────────────────
+
+  async listRemoteMachines(): Promise<RemoteMachineInfo[]> { return []; }
+  async addRemoteMachine(_config: RemoteMachineConfig): Promise<string> { return ''; }
+  async removeRemoteMachine(_machineId: string): Promise<void> { }
+  async connectRemoteMachine(_machineId: string): Promise<void> { }
+  async disconnectRemoteMachine(_machineId: string): Promise<void> { }
+  async probeSpki(_url: string): Promise<string> { return ''; }
+  async addSpkiPin(_machineId: string, _pin: string): Promise<void> { }
+  async removeSpkiPin(_machineId: string, _pin: string): Promise<void> { }
+  onRemoteSidecarMessage(_callback: (msg: RemoteSidecarMessage) => void): UnsubscribeFn { return () => {}; }
+  onRemotePtyData(_callback: (msg: RemotePtyData) => void): UnsubscribeFn { return () => {}; }
+  onRemotePtyExit(_callback: (msg: RemotePtyExit) => void): UnsubscribeFn { return () => {}; }
+  onRemoteMachineReady(_callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn { return () => {}; }
+  onRemoteMachineDisconnected(_callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn { return () => {}; }
+  onRemoteStateSync(_callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn { return () => {}; }
+  onRemoteError(_callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn { return () => {}; }
+  onRemoteMachineReconnecting(_callback: (msg: RemoteReconnectingEvent) => void): UnsubscribeFn { return () => {}; }
+  onRemoteMachineReconnectReady(_callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn { return () => {}; }
+  onRemoteSpkiTofu(_callback: (msg: RemoteSpkiTofuEvent) => void): UnsubscribeFn { return () => {}; }
+
+  // ── File watcher ────────────────────────────────────────────────────────
+
+  async watchFile(_paneId: string, _path: string): Promise<string> { return ''; }
+  async unwatchFile(_paneId: string): Promise<void> { }
+  async readWatchedFile(_path: string): Promise<string> { return ''; }
+  onFileChanged(_callback: (payload: FileChangedPayload) => void): UnsubscribeFn { return () => {}; }
+
+  // ── Agent bridge (direct IPC) ───────────────────────────────────────────
+
+  async queryAgent(options: AgentQueryOptions): Promise<void> {
+    await this.r.request['agent.start']({
+      sessionId: options.session_id, provider: options.provider ?? 'claude',
+      prompt: options.prompt, cwd: options.cwd, model: options.model,
+      systemPrompt: options.system_prompt, maxTurns: options.max_turns,
+      permissionMode: options.permission_mode, extraEnv: options.extra_env,
+      resumeSessionId: options.resume_session_id,
+    });
+  }
+
+  async stopAgentDirect(sessionId: string, _remoteMachineId?: string): Promise<void> {
+    await this.r.request['agent.stop']({ sessionId });
+  }
+
+  async isAgentReady(): Promise<boolean> { return true; }
+  async restartAgentSidecar(): Promise<void> { }
+
+  async setSandbox(_projectCwds: string[], _worktreeRoots: string[], _enabled: boolean): Promise<void> { }
+
+  onSidecarMessage(callback: (msg: SidecarMessagePayload) => void): UnsubscribeFn {
+    return this.listenMsg<SidecarMessagePayload>('agent.sidecar', callback);
+  }
+
+  onSidecarExited(callback: () => void): UnsubscribeFn {
+    return this.listenMsg('agent.sidecar.exited', () => callback());
+  }
+
+  // ── PTY bridge (per-session) ────────────────────────────────────────────
+
+  async spawnPty(options: PtySpawnOptions): Promise<string> {
+    const res = await this.r.request['pty.create']({
+      sessionId: `pty-${Date.now()}`, cols: options.cols ?? 80, rows: options.rows ?? 24,
+      cwd: options.cwd, shell: options.shell, args: options.args,
+    }) as { ok: boolean; sessionId?: string; error?: string };
+    if (!res.ok) throw new Error(res.error ?? 'PTY creation failed');
+    return res.sessionId ?? '';
+  }
+
+  async writePtyDirect(id: string, data: string, _remoteMachineId?: string): Promise<void> {
+    await this.r.request['pty.write']({ sessionId: id, data });
+  }
+
+  async resizePtyDirect(id: string, cols: number, rows: number, _remoteMachineId?: string): Promise<void> {
+    await this.r.request['pty.resize']({ sessionId: id, cols, rows });
+  }
+
+  async killPty(id: string, _remoteMachineId?: string): Promise<void> {
+    await this.r.request['pty.close']({ sessionId: id });
+  }
+
+  onPtyData(id: string, callback: (data: string) => void): UnsubscribeFn {
+    return this.listenMsg<{ sessionId: string; data: string }>('pty.output', (p) => {
+      if (p.sessionId === id) callback(p.data);
+    });
+  }
+
+  onPtyExit(id: string, callback: () => void): UnsubscribeFn {
+    return this.listenMsg<{ sessionId: string }>('pty.closed', (p) => {
+      if (p.sessionId === id) callback();
+    });
+  }
+
   // ── Events ───────────────────────────────────────────────────────────────
 
   /** Subscribe to an RPC message event; returns unsubscribe function. */
@@ -297,7 +577,6 @@ function convertWireMessage(raw: {
   id: string; type: string; parentId?: string; content: unknown; timestamp: number;
 }): AgentMessage | null {
   const c = raw.content as Record<string, unknown> | undefined;
-
   switch (raw.type) {
     case 'text':
       return { id: raw.id, role: 'assistant', content: String(c?.['text'] ?? ''), timestamp: raw.timestamp };
@@ -307,28 +586,22 @@ function convertWireMessage(raw: {
       const name = String(c?.['name'] ?? 'Tool');
       const input = c?.['input'] as Record<string, unknown> | undefined;
       return {
-        id: raw.id, role: 'tool-call',
-        content: formatToolContent(name, input),
-        toolName: name,
-        toolInput: input ? JSON.stringify(input, null, 2) : undefined,
-        timestamp: raw.timestamp,
+        id: raw.id, role: 'tool-call', content: formatToolContent(name, input),
+        toolName: name, toolInput: input ? JSON.stringify(input, null, 2) : undefined, timestamp: raw.timestamp,
       };
     }
     case 'tool_result': {
       const output = c?.['output'];
       return {
         id: raw.id, role: 'tool-result',
-        content: typeof output === 'string' ? output : JSON.stringify(output, null, 2),
-        timestamp: raw.timestamp,
+        content: typeof output === 'string' ? output : JSON.stringify(output, null, 2), timestamp: raw.timestamp,
       };
     }
     case 'init':
       return { id: raw.id, role: 'system', content: `Session initialized`, timestamp: raw.timestamp };
     case 'error':
       return { id: raw.id, role: 'system', content: `Error: ${String(c?.['message'] ?? 'Unknown')}`, timestamp: raw.timestamp };
-    case 'cost':
-    case 'status':
-    case 'compaction':
+    case 'cost': case 'status': case 'compaction':
       return null;
     default:
       return null;

src/lib/backend/TauriAdapter.ts

@@ -6,7 +6,24 @@ import { listen, type UnlistenFn } from '@tauri-apps/api/event';
 import type {
   BackendAdapter, BackendCapabilities, UnsubscribeFn, AgentStartOptions,
   AgentMessage, AgentStatus, FileEntry, FileContent, PtyCreateOptions,
-  SettingsMap, GroupsFile,
+  SettingsMap, GroupsFile, SearchResult,
+  PersistedSession, PersistedLayout,
+  AgentMessageRecord, ProjectAgentState, SessionMetricRecord, MdFileEntry,
+  BtmsgAgent, BtmsgMessage, BtmsgChannel, BtmsgChannelMessage, BtmsgFeedMessage,
+  DeadLetterEntry, AuditEntry, AuditEventType,
+  Task, TaskComment,
+  SessionAnchorRecord,
+  NotificationUrgency, TelemetryLevel,
+  FsWriteEvent, FsWatcherStatus,
+  CtxEntry, CtxSummary,
+  MemoraNode, MemoraSearchResult,
+  SshSessionRecord, PluginMeta,
+  ClaudeProfile, ClaudeSkill,
+  RemoteMachineConfig, RemoteMachineInfo,
+  RemoteSidecarMessage, RemotePtyData, RemotePtyExit,
+  RemoteMachineEvent, RemoteReconnectingEvent, RemoteSpkiTofuEvent,
+  FileChangedPayload, AgentQueryOptions, SidecarMessagePayload, PtySpawnOptions,
+  SessionId, ProjectId, GroupId, AgentId,
 } from '@agor/types';
 
 const TAURI_CAPABILITIES: BackendCapabilities = {
@@ -20,13 +37,6 @@ const TAURI_CAPABILITIES: BackendCapabilities = {
   supportsTelemetry: true,
 };
 
-interface SidecarMessage {
-  type: string;
-  sessionId?: string;
-  event?: Record<string, unknown>;
-  message?: string;
-}
-
 interface TauriDirEntry {
   name: string; path: string; is_dir: boolean; size: number; ext: string;
 }
@@ -69,7 +79,7 @@ export class TauriAdapter implements BackendAdapter {
     return invoke('groups_save', { config: groups });
   }
 
-  // ── Agent ────────────────────────────────────────────────────────────────
+  // ── Agent (simplified) ────────────────────────────────────────────────────
 
   async startAgent(options: AgentStartOptions): Promise<{ ok: boolean; error?: string }> {
     const tauriOpts = {
@@ -118,7 +128,7 @@ export class TauriAdapter implements BackendAdapter {
     }
   }
 
-  // ── PTY ──────────────────────────────────────────────────────────────────
+  // ── PTY (simplified) ──────────────────────────────────────────────────────
 
   async createPty(options: PtyCreateOptions): Promise<string> {
     return invoke<string>('pty_spawn', {
@@ -155,7 +165,584 @@ export class TauriAdapter implements BackendAdapter {
     return invoke('write_file_content', { path, content });
   }
 
-  // ── Events ───────────────────────────────────────────────────────────────
+  // ── Session persistence ─────────────────────────────────────────────────
+
+  async listSessions(): Promise<PersistedSession[]> {
+    return invoke('session_list');
+  }
+
+  async saveSession(session: PersistedSession): Promise<void> {
+    return invoke('session_save', { session });
+  }
+
+  async deleteSession(id: string): Promise<void> {
+    return invoke('session_delete', { id });
+  }
+
+  async updateSessionTitle(id: string, title: string): Promise<void> {
+    return invoke('session_update_title', { id, title });
+  }
+
+  async touchSession(id: string): Promise<void> {
+    return invoke('session_touch', { id });
+  }
+
+  async updateSessionGroup(id: string, groupName: string): Promise<void> {
+    return invoke('session_update_group', { id, group_name: groupName });
+  }
+
+  async saveLayout(layout: PersistedLayout): Promise<void> {
+    return invoke('layout_save', { layout });
+  }
+
+  async loadLayout(): Promise<PersistedLayout> {
+    return invoke('layout_load');
+  }
+
+  // ── Agent persistence ───────────────────────────────────────────────────
+
+  async saveAgentMessages(
+    sessionId: SessionId, projectId: ProjectId, sdkSessionId: string | undefined,
+    messages: AgentMessageRecord[],
+  ): Promise<void> {
+    return invoke('agent_messages_save', {
+      sessionId, projectId, sdkSessionId: sdkSessionId ?? null, messages,
+    });
+  }
+
+  async loadAgentMessages(projectId: ProjectId): Promise<AgentMessageRecord[]> {
+    return invoke('agent_messages_load', { projectId });
+  }
+
+  async saveProjectAgentState(state: ProjectAgentState): Promise<void> {
+    return invoke('project_agent_state_save', { state });
+  }
+
+  async loadProjectAgentState(projectId: ProjectId): Promise<ProjectAgentState | null> {
+    return invoke('project_agent_state_load', { projectId });
+  }
+
+  async saveSessionMetric(metric: Omit<SessionMetricRecord, 'id'>): Promise<void> {
+    return invoke('session_metric_save', { metric: { id: 0, ...metric } });
+  }
+
+  async loadSessionMetrics(projectId: ProjectId, limit = 20): Promise<SessionMetricRecord[]> {
+    return invoke('session_metrics_load', { projectId, limit });
+  }
+
+  async getCliGroup(): Promise<string | null> {
+    return invoke('cli_get_group');
+  }
+
+  async discoverMarkdownFiles(cwd: string): Promise<MdFileEntry[]> {
+    return invoke('discover_markdown_files', { cwd });
+  }
+
+  // ── Btmsg ───────────────────────────────────────────────────────────────
+
+  async btmsgGetAgents(groupId: GroupId): Promise<BtmsgAgent[]> {
+    return invoke('btmsg_get_agents', { groupId });
+  }
+
+  async btmsgUnreadCount(agentId: AgentId): Promise<number> {
+    return invoke('btmsg_unread_count', { agentId });
+  }
+
+  async btmsgUnreadMessages(agentId: AgentId): Promise<BtmsgMessage[]> {
+    return invoke('btmsg_unread_messages', { agentId });
+  }
+
+  async btmsgHistory(agentId: AgentId, otherId: AgentId, limit = 20): Promise<BtmsgMessage[]> {
+    return invoke('btmsg_history', { agentId, otherId, limit });
+  }
+
+  async btmsgSend(fromAgent: AgentId, toAgent: AgentId, content: string): Promise<string> {
+    return invoke('btmsg_send', { fromAgent, toAgent, content });
+  }
+
+  async btmsgSetStatus(agentId: AgentId, status: string): Promise<void> {
+    return invoke('btmsg_set_status', { agentId, status });
+  }
+
+  async btmsgEnsureAdmin(groupId: GroupId): Promise<void> {
+    return invoke('btmsg_ensure_admin', { groupId });
+  }
+
+  async btmsgAllFeed(groupId: GroupId, limit = 100): Promise<BtmsgFeedMessage[]> {
+    return invoke('btmsg_all_feed', { groupId, limit });
+  }
+
+  async btmsgMarkRead(readerId: AgentId, senderId: AgentId): Promise<void> {
+    return invoke('btmsg_mark_read', { readerId, senderId });
+  }
+
+  async btmsgGetChannels(groupId: GroupId): Promise<BtmsgChannel[]> {
+    return invoke('btmsg_get_channels', { groupId });
+  }
+
+  async btmsgChannelMessages(channelId: string, limit = 100): Promise<BtmsgChannelMessage[]> {
+    return invoke('btmsg_channel_messages', { channelId, limit });
+  }
+
+  async btmsgChannelSend(channelId: string, fromAgent: AgentId, content: string): Promise<string> {
+    return invoke('btmsg_channel_send', { channelId, fromAgent, content });
+  }
+
+  async btmsgCreateChannel(name: string, groupId: GroupId, createdBy: AgentId): Promise<string> {
+    return invoke('btmsg_create_channel', { name, groupId, createdBy });
+  }
+
+  async btmsgAddChannelMember(channelId: string, agentId: AgentId): Promise<void> {
+    return invoke('btmsg_add_channel_member', { channelId, agentId });
+  }
+
+  async btmsgRegisterAgents(config: GroupsFile): Promise<void> {
+    return invoke('btmsg_register_agents', { config });
+  }
+
+  async btmsgUnseenMessages(agentId: AgentId, sessionId: string): Promise<BtmsgMessage[]> {
+    return invoke('btmsg_unseen_messages', { agentId, sessionId });
+  }
+
+  async btmsgMarkSeen(sessionId: string, messageIds: string[]): Promise<void> {
+    return invoke('btmsg_mark_seen', { sessionId, messageIds });
+  }
+
+  async btmsgPruneSeen(): Promise<number> {
+    return invoke('btmsg_prune_seen');
+  }
+
+  async btmsgRecordHeartbeat(agentId: AgentId): Promise<void> {
+    return invoke('btmsg_record_heartbeat', { agentId });
+  }
+
+  async btmsgGetStaleAgents(groupId: GroupId, thresholdSecs = 300): Promise<string[]> {
+    return invoke('btmsg_get_stale_agents', { groupId, thresholdSecs });
+  }
+
+  async btmsgGetDeadLetters(groupId: GroupId, limit = 50): Promise<DeadLetterEntry[]> {
+    return invoke('btmsg_get_dead_letters', { groupId, limit });
+  }
+
+  async btmsgClearDeadLetters(groupId: GroupId): Promise<void> {
+    return invoke('btmsg_clear_dead_letters', { groupId });
+  }
+
+  async btmsgClearAllComms(groupId: GroupId): Promise<void> {
+    return invoke('btmsg_clear_all_comms', { groupId });
+  }
+
+  // ── Bttask ──────────────────────────────────────────────────────────────
+
+  async bttaskList(groupId: GroupId): Promise<Task[]> {
+    return invoke<Task[]>('bttask_list', { groupId });
+  }
+
+  async bttaskComments(taskId: string): Promise<TaskComment[]> {
+    return invoke<TaskComment[]>('bttask_comments', { taskId });
+  }
+
+  async bttaskUpdateStatus(taskId: string, status: string, version: number): Promise<number> {
+    return invoke<number>('bttask_update_status', { taskId, status, version });
+  }
+
+  async bttaskAddComment(taskId: string, agentId: AgentId, content: string): Promise<string> {
+    return invoke<string>('bttask_add_comment', { taskId, agentId, content });
+  }
+
+  async bttaskCreate(
+    title: string, description: string, priority: string,
+    groupId: GroupId, createdBy: AgentId, assignedTo?: AgentId,
+  ): Promise<string> {
+    return invoke<string>('bttask_create', { title, description, priority, groupId, createdBy, assignedTo });
+  }
+
+  async bttaskDelete(taskId: string): Promise<void> {
+    return invoke('bttask_delete', { taskId });
+  }
+
+  async bttaskReviewQueueCount(groupId: GroupId): Promise<number> {
+    return invoke<number>('bttask_review_queue_count', { groupId });
+  }
+
+  // ── Anchors ─────────────────────────────────────────────────────────────
+
+  async saveSessionAnchors(anchors: SessionAnchorRecord[]): Promise<void> {
+    return invoke('session_anchors_save', { anchors });
+  }
+
+  async loadSessionAnchors(projectId: string): Promise<SessionAnchorRecord[]> {
+    return invoke('session_anchors_load', { projectId });
+  }
+
+  async deleteSessionAnchor(id: string): Promise<void> {
+    return invoke('session_anchor_delete', { id });
+  }
+
+  async clearProjectAnchors(projectId: string): Promise<void> {
+    return invoke('session_anchors_clear', { projectId });
+  }
+
+  async updateAnchorType(id: string, anchorType: string): Promise<void> {
+    return invoke('session_anchor_update_type', { id, anchorType });
+  }
+
+  // ── Search ──────────────────────────────────────────────────────────────
+
+  async searchInit(): Promise<void> {
+    return invoke('search_init');
+  }
+
+  async searchAll(query: string, limit = 20): Promise<SearchResult[]> {
+    return invoke<SearchResult[]>('search_query', { query, limit });
+  }
+
+  async searchRebuild(): Promise<void> {
+    return invoke('search_rebuild');
+  }
+
+  async searchIndexMessage(sessionId: string, role: string, content: string): Promise<void> {
+    return invoke('search_index_message', { sessionId, role, content });
+  }
+
+  // ── Audit ───────────────────────────────────────────────────────────────
+
+  async logAuditEvent(agentId: AgentId, eventType: AuditEventType, detail: string): Promise<void> {
+    return invoke('audit_log_event', { agentId, eventType, detail });
+  }
+
+  async getAuditLog(groupId: GroupId, limit = 200, offset = 0): Promise<AuditEntry[]> {
+    return invoke('audit_log_list', { groupId, limit, offset });
+  }
+
+  async getAuditLogForAgent(agentId: AgentId, limit = 50): Promise<AuditEntry[]> {
+    return invoke('audit_log_for_agent', { agentId, limit });
+  }
+
+  // ── Notifications ───────────────────────────────────────────────────────
+
+  sendDesktopNotification(title: string, body: string, urgency: NotificationUrgency = 'normal'): void {
+    invoke('notify_desktop', { title, body, urgency }).catch((_e: unknown) => {
+      // eslint-disable-next-line no-console
+      console.warn('[TauriAdapter] Desktop notification failed:', _e);
+    });
+  }
+
+  // ── Telemetry ───────────────────────────────────────────────────────────
+
+  telemetryLog(level: TelemetryLevel, message: string, context?: Record<string, unknown>): void {
+    invoke('frontend_log', { level, message, context: context ?? null }).catch((_e: unknown) => {
+      // eslint-disable-next-line no-console
+      console.warn('[TauriAdapter] Telemetry IPC failed:', _e);
+    });
+  }
+
+  // ── Secrets ─────────────────────────────────────────────────────────────
+
+  async storeSecret(key: string, value: string): Promise<void> {
+    return invoke('secrets_store', { key, value });
+  }
+
+  async getSecret(key: string): Promise<string | null> {
+    return invoke('secrets_get', { key });
+  }
+
+  async deleteSecret(key: string): Promise<void> {
+    return invoke('secrets_delete', { key });
+  }
+
+  async listSecrets(): Promise<string[]> {
+    return invoke('secrets_list');
+  }
+
+  async hasKeyring(): Promise<boolean> {
+    return invoke('secrets_has_keyring');
+  }
+
+  async knownSecretKeys(): Promise<string[]> {
+    return invoke('secrets_known_keys');
+  }
+
+  // ── Filesystem watcher ──────────────────────────────────────────────────
+
+  async fsWatchProject(projectId: string, cwd: string): Promise<void> {
+    return invoke('fs_watch_project', { projectId, cwd });
+  }
+
+  async fsUnwatchProject(projectId: string): Promise<void> {
+    return invoke('fs_unwatch_project', { projectId });
+  }
+
+  onFsWriteDetected(callback: (event: FsWriteEvent) => void): UnsubscribeFn {
+    return this.listenTauri<FsWriteEvent>('fs-write-detected', callback);
+  }
+
+  async fsWatcherStatus(): Promise<FsWatcherStatus> {
+    return invoke('fs_watcher_status');
+  }
+
+  // ── Ctx ─────────────────────────────────────────────────────────────────
+
+  async ctxInitDb(): Promise<void> {
+    return invoke('ctx_init_db');
+  }
+
+  async ctxRegisterProject(name: string, description: string, workDir?: string): Promise<void> {
+    return invoke('ctx_register_project', { name, description, workDir: workDir ?? null });
+  }
+
+  async ctxGetContext(project: string): Promise<CtxEntry[]> {
+    return invoke('ctx_get_context', { project });
+  }
+
+  async ctxGetShared(): Promise<CtxEntry[]> {
+    return invoke('ctx_get_shared');
+  }
+
+  async ctxGetSummaries(project: string, limit = 5): Promise<CtxSummary[]> {
+    return invoke('ctx_get_summaries', { project, limit });
+  }
+
+  async ctxSearch(query: string): Promise<CtxEntry[]> {
+    return invoke('ctx_search', { query });
+  }
+
+  // ── Memora ──────────────────────────────────────────────────────────────
+
+  async memoraAvailable(): Promise<boolean> {
+    return invoke<boolean>('memora_available');
+  }
+
+  async memoraList(options?: { tags?: string[]; limit?: number; offset?: number }): Promise<MemoraSearchResult> {
+    return invoke<MemoraSearchResult>('memora_list', {
+      tags: options?.tags ?? null,
+      limit: options?.limit ?? 50,
+      offset: options?.offset ?? 0,
+    });
+  }
+
+  async memoraSearch(query: string, options?: { tags?: string[]; limit?: number }): Promise<MemoraSearchResult> {
+    return invoke<MemoraSearchResult>('memora_search', {
+      query,
+      tags: options?.tags ?? null,
+      limit: options?.limit ?? 50,
+    });
+  }
+
+  async memoraGet(id: number): Promise<MemoraNode | null> {
+    return invoke<MemoraNode | null>('memora_get', { id });
+  }
+
+  // ── SSH ─────────────────────────────────────────────────────────────────
+
+  async listSshSessions(): Promise<SshSessionRecord[]> {
+    return invoke('ssh_session_list');
+  }
+
+  async saveSshSession(session: SshSessionRecord): Promise<void> {
+    return invoke('ssh_session_save', { session });
+  }
+
+  async deleteSshSession(id: string): Promise<void> {
+    return invoke('ssh_session_delete', { id });
+  }
+
+  // ── Plugins ─────────────────────────────────────────────────────────────
+
+  async discoverPlugins(): Promise<PluginMeta[]> {
+    return invoke<PluginMeta[]>('plugins_discover');
+  }
+
+  async readPluginFile(pluginId: string, filename: string): Promise<string> {
+    return invoke<string>('plugin_read_file', { pluginId, filename });
+  }
+
+  // ── Claude provider ─────────────────────────────────────────────────────
+
+  async listProfiles(): Promise<ClaudeProfile[]> {
+    return invoke<ClaudeProfile[]>('claude_list_profiles');
+  }
+
+  async listSkills(): Promise<ClaudeSkill[]> {
+    return invoke<ClaudeSkill[]>('claude_list_skills');
+  }
+
+  async readSkill(path: string): Promise<string> {
+    return invoke<string>('claude_read_skill', { path });
+  }
+
+  // ── Remote machines ─────────────────────────────────────────────────────
+
+  async listRemoteMachines(): Promise<RemoteMachineInfo[]> {
+    return invoke('remote_list');
+  }
+
+  async addRemoteMachine(config: RemoteMachineConfig): Promise<string> {
+    return invoke('remote_add', { config });
+  }
+
+  async removeRemoteMachine(machineId: string): Promise<void> {
+    return invoke('remote_remove', { machineId });
+  }
+
+  async connectRemoteMachine(machineId: string): Promise<void> {
+    return invoke('remote_connect', { machineId });
+  }
+
+  async disconnectRemoteMachine(machineId: string): Promise<void> {
+    return invoke('remote_disconnect', { machineId });
+  }
+
+  async probeSpki(url: string): Promise<string> {
+    return invoke('remote_probe_spki', { url });
+  }
+
+  async addSpkiPin(machineId: string, pin: string): Promise<void> {
+    return invoke('remote_add_pin', { machineId, pin });
+  }
+
+  async removeSpkiPin(machineId: string, pin: string): Promise<void> {
+    return invoke('remote_remove_pin', { machineId, pin });
+  }
+
+  onRemoteSidecarMessage(callback: (msg: RemoteSidecarMessage) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteSidecarMessage>('remote-sidecar-message', callback);
+  }
+
+  onRemotePtyData(callback: (msg: RemotePtyData) => void): UnsubscribeFn {
+    return this.listenTauri<RemotePtyData>('remote-pty-data', callback);
+  }
+
+  onRemotePtyExit(callback: (msg: RemotePtyExit) => void): UnsubscribeFn {
+    return this.listenTauri<RemotePtyExit>('remote-pty-exit', callback);
+  }
+
+  onRemoteMachineReady(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteMachineEvent>('remote-machine-ready', callback);
+  }
+
+  onRemoteMachineDisconnected(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteMachineEvent>('remote-machine-disconnected', callback);
+  }
+
+  onRemoteStateSync(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteMachineEvent>('remote-state-sync', callback);
+  }
+
+  onRemoteError(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteMachineEvent>('remote-error', callback);
+  }
+
+  onRemoteMachineReconnecting(callback: (msg: RemoteReconnectingEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteReconnectingEvent>('remote-machine-reconnecting', callback);
+  }
+
+  onRemoteMachineReconnectReady(callback: (msg: RemoteMachineEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteMachineEvent>('remote-machine-reconnect-ready', callback);
+  }
+
+  onRemoteSpkiTofu(callback: (msg: RemoteSpkiTofuEvent) => void): UnsubscribeFn {
+    return this.listenTauri<RemoteSpkiTofuEvent>('remote-spki-tofu', callback);
+  }
+
+  // ── File watcher ────────────────────────────────────────────────────────
+
+  async watchFile(paneId: string, path: string): Promise<string> {
+    return invoke('file_watch', { paneId, path });
+  }
+
+  async unwatchFile(paneId: string): Promise<void> {
+    return invoke('file_unwatch', { paneId });
+  }
+
+  async readWatchedFile(path: string): Promise<string> {
+    return invoke('file_read', { path });
+  }
+
+  onFileChanged(callback: (payload: FileChangedPayload) => void): UnsubscribeFn {
+    return this.listenTauri<FileChangedPayload>('file-changed', callback);
+  }
+
+  // ── Agent bridge (direct IPC) ───────────────────────────────────────────
+
+  async queryAgent(options: AgentQueryOptions): Promise<void> {
+    if (options.remote_machine_id) {
+      const { remote_machine_id: machineId, ...agentOptions } = options;
+      return invoke('remote_agent_query', { machineId, options: agentOptions });
+    }
+    return invoke('agent_query', { options });
+  }
+
+  async stopAgentDirect(sessionId: string, remoteMachineId?: string): Promise<void> {
+    if (remoteMachineId) {
+      return invoke('remote_agent_stop', { machineId: remoteMachineId, sessionId });
+    }
+    return invoke('agent_stop', { sessionId });
+  }
+
+  async isAgentReady(): Promise<boolean> {
+    return invoke<boolean>('agent_ready');
+  }
+
+  async restartAgentSidecar(): Promise<void> {
+    return invoke('agent_restart');
+  }
+
+  async setSandbox(projectCwds: string[], worktreeRoots: string[], enabled: boolean): Promise<void> {
+    return invoke('agent_set_sandbox', { projectCwds, worktreeRoots, enabled });
+  }
+
+  onSidecarMessage(callback: (msg: SidecarMessagePayload) => void): UnsubscribeFn {
+    return this.listenTauri<SidecarMessagePayload>('sidecar-message', (payload) => {
+      if (typeof payload !== 'object' || payload === null) return;
+      callback(payload);
+    });
+  }
+
+  onSidecarExited(callback: () => void): UnsubscribeFn {
+    return this.listenTauri('sidecar-exited', () => callback());
+  }
+
+  // ── PTY bridge (per-session) ────────────────────────────────────────────
+
+  async spawnPty(options: PtySpawnOptions): Promise<string> {
+    if (options.remote_machine_id) {
+      const { remote_machine_id: machineId, ...ptyOptions } = options;
+      return invoke<string>('remote_pty_spawn', { machineId, options: ptyOptions });
+    }
+    return invoke<string>('pty_spawn', { options });
+  }
+
+  async writePtyDirect(id: string, data: string, remoteMachineId?: string): Promise<void> {
+    if (remoteMachineId) {
+      return invoke('remote_pty_write', { machineId: remoteMachineId, id, data });
+    }
+    return invoke('pty_write', { id, data });
+  }
+
+  async resizePtyDirect(id: string, cols: number, rows: number, remoteMachineId?: string): Promise<void> {
+    if (remoteMachineId) {
+      return invoke('remote_pty_resize', { machineId: remoteMachineId, id, cols, rows });
+    }
+    return invoke('pty_resize', { id, cols, rows });
+  }
+
+  async killPty(id: string, remoteMachineId?: string): Promise<void> {
+    if (remoteMachineId) {
+      return invoke('remote_pty_kill', { machineId: remoteMachineId, id });
+    }
+    return invoke('pty_kill', { id });
+  }
+
+  onPtyData(id: string, callback: (data: string) => void): UnsubscribeFn {
+    return this.listenTauri<string>(`pty-data-${id}`, callback);
+  }
+
+  onPtyExit(id: string, callback: () => void): UnsubscribeFn {
+    return this.listenTauri(`pty-exit-${id}`, () => callback());
+  }
+
+  // ── Events (simplified — kept for backward compat) ──────────────────────
 
   /** Subscribe to a Tauri event; tracks unlisten for cleanup. */
   private listenTauri<T>(event: string, handler: (payload: T) => void): UnsubscribeFn {
@@ -173,7 +760,7 @@ export class TauriAdapter implements BackendAdapter {
   }
 
   onAgentMessage(callback: (sessionId: string, messages: AgentMessage[]) => void): UnsubscribeFn {
-    return this.listenTauri<SidecarMessage>('sidecar-message', (msg) => {
+    return this.listenTauri<SidecarMessagePayload>('sidecar-message', (msg) => {
       if (msg.type !== 'message' || !msg.sessionId || !msg.event) return;
       const agentMsg: AgentMessage = {
         id: String(msg.event['id'] ?? Date.now()),
@@ -188,7 +775,7 @@ export class TauriAdapter implements BackendAdapter {
   }
 
   onAgentStatus(callback: (sessionId: string, status: AgentStatus, error?: string) => void): UnsubscribeFn {
-    return this.listenTauri<SidecarMessage>('sidecar-message', (msg) => {
+    return this.listenTauri<SidecarMessagePayload>('sidecar-message', (msg) => {
       if (msg.type !== 'status' || !msg.sessionId) return;
       callback(msg.sessionId, normalizeStatus(String(msg.event?.['status'] ?? 'idle')), msg.message);
     });
@@ -197,7 +784,7 @@ export class TauriAdapter implements BackendAdapter {
   onAgentCost(
     callback: (sessionId: string, costUsd: number, inputTokens: number, outputTokens: number) => void,
   ): UnsubscribeFn {
-    return this.listenTauri<SidecarMessage>('sidecar-message', (msg) => {
+    return this.listenTauri<SidecarMessagePayload>('sidecar-message', (msg) => {
       if (msg.type !== 'cost' || !msg.sessionId || !msg.event) return;
       callback(msg.sessionId, Number(msg.event['totalCostUsd'] ?? 0), Number(msg.event['inputTokens'] ?? 0), Number(msg.event['outputTokens'] ?? 0));
     });
@@ -205,7 +792,7 @@ export class TauriAdapter implements BackendAdapter {
 
   onPtyOutput(_callback: (sessionId: string, data: string) => void): UnsubscribeFn {
     // Tauri PTY uses per-session event channels (pty-data-{id}).
-    // Phase 1: PTY event wiring remains in pty-bridge.ts per-session listeners.
+    // Use onPtyData(id, callback) for per-session PTY output.
     return () => {};
   }
 

src/lib/components/Agent/AgentPane.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
   import { onMount, untrack } from 'svelte';
   import { marked, Renderer } from 'marked';
-  import { queryAgent, stopAgent, isAgentReady, restartAgent } from '../../adapters/agent-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { ClaudeProfile, ClaudeSkill, AgentQueryOptions } from '@agor/types';
   import {
     getAgentSession,
     createAgentSession,
@@ -12,9 +13,7 @@
   import { focusPane } from '../../stores/layout.svelte';
   import { isSidecarAlive, setSidecarAlive } from '../../agent-dispatcher';
   import { getSessionProjectId } from '../../utils/session-persistence';
-  import { setAgentStatus as setBtmsgAgentStatus } from '../../adapters/btmsg-bridge';
   import type { AgentId } from '../../types/ids';
-  import { listProfiles, listSkills, readSkill, type ClaudeProfile, type ClaudeSkill } from '../../adapters/claude-bridge';
   import { getInjectableAnchors, getProjectAnchors, addAnchors, removeAnchor } from '../../stores/anchors.svelte';
   import { estimateTokens } from '../../utils/anchor-serializer';
   import type { SessionAnchor } from '../../types/anchors';
@@ -146,8 +145,8 @@
     await getHighlighter();
     // Only load profiles/skills for providers that support them
     const [profileList, skillList] = await Promise.all([
-      capabilities.hasProfiles ? listProfiles().catch(() => []) : Promise.resolve([]),
-      capabilities.hasSkills ? listSkills().catch(() => []) : Promise.resolve([]),
+      capabilities.hasProfiles ? getBackend().listProfiles().catch(() => []) : Promise.resolve([]),
+      capabilities.hasSkills ? getBackend().listSkills().catch(() => []) : Promise.resolve([]),
     ]);
     profiles = profileList;
     skills = skillList;
@@ -175,7 +174,7 @@
   async function startQuery(text: string, resume = false) {
     if (!text.trim()) return;
 
-    const ready = await isAgentReady();
+    const ready = await getBackend().isAgentReady();
     if (!ready) {
       if (!resume) createAgentSession(sessionId, text);
       const { updateAgentStatus } = await import('../../stores/agents.svelte');
@@ -207,7 +206,7 @@
     }
     const systemPrompt = promptParts.length > 0 ? promptParts.join('\n\n') : undefined;
 
-    await queryAgent({
+    await getBackend().queryAgent({
       provider: providerId,
       session_id: sessionId,
       prompt: text,
@@ -234,7 +233,7 @@
     const skill = skills.find(s => s.name === skillName);
     if (!skill) return text;
     try {
-      const content = await readSkill(skill.source_path);
+      const content = await getBackend().readSkill(skill.source_path);
       const args = text.slice(1 + skillName.length).trim();
       return args ? `${content}\n\nUser input: ${args}` : content;
     } catch {
@@ -267,14 +266,14 @@
   function handleStop() {
     updateAgentStatus(sessionId, 'done');
     const projId = getSessionProjectId(sessionId);
-    if (projId) setBtmsgAgentStatus(projId as unknown as AgentId, 'stopped').catch(() => {});
-    stopAgent(sessionId).catch(() => {});
+    if (projId) getBackend().btmsgSetStatus(projId as unknown as AgentId, 'stopped').catch(() => {});
+    getBackend().stopAgentDirect(sessionId).catch(() => {});
   }
 
   async function handleRestart() {
     restarting = true;
     try {
-      await restartAgent();
+      await getBackend().restartAgentSidecar();
       setSidecarAlive(true);
     } catch {
       // Still dead

src/lib/components/Context/ContextPane.svelte

@@ -1,15 +1,7 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import {
-    ctxInitDb,
-    ctxRegisterProject,
-    ctxGetContext,
-    ctxGetShared,
-    ctxGetSummaries,
-    ctxSearch,
-    type CtxEntry,
-    type CtxSummary,
-  } from '../../adapters/ctx-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { CtxEntry, CtxSummary } from '@agor/types';
 
   interface Props {
     projectName: string;
@@ -32,12 +24,12 @@
     loading = true;
     try {
       // Register project if not already (INSERT OR IGNORE)
-      await ctxRegisterProject(projectName, `Agent Orchestrator project: ${projectName}`, projectCwd);
+      await getBackend().ctxRegisterProject(projectName, `Agent Orchestrator project: ${projectName}`, projectCwd);
 
       const [ctx, shared, sums] = await Promise.all([
-        ctxGetContext(projectName),
-        ctxGetShared(),
-        ctxGetSummaries(projectName, 5),
+        getBackend().ctxGetContext(projectName),
+        getBackend().ctxGetShared(),
+        getBackend().ctxGetSummaries(projectName, 5),
       ]);
       entries = ctx;
       sharedEntries = shared;
@@ -55,7 +47,7 @@
   async function handleInitDb() {
     initializing = true;
     try {
-      await ctxInitDb();
+      await getBackend().ctxInitDb();
       await loadProjectContext();
     } catch (e) {
       error = `Failed to initialize database: ${e}`;
@@ -70,7 +62,7 @@
       return;
     }
     try {
-      searchResults = await ctxSearch(searchQuery);
+      searchResults = await getBackend().ctxSearch(searchQuery);
     } catch (e) {
       error = `Search failed: ${e}`;
     }

src/lib/components/Markdown/MarkdownPane.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
   import { onMount, onDestroy } from 'svelte';
   import { marked, Renderer } from 'marked';
-  import { watchFile, unwatchFile, onFileChanged, type FileChangedPayload } from '../../adapters/file-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { FileChangedPayload } from '@agor/types';
   import { getHighlighter, highlightCode, escapeHtml } from '../../utils/highlight';
 
   interface Props {
@@ -45,11 +46,11 @@
 
     // Unwatch previous file
     if (currentWatchPath) {
-      unwatchFile(paneId).catch(() => {});
+      getBackend().ungetBackend().watchFile(paneId).catch(() => {});
     }
 
     currentWatchPath = path;
-    watchFile(paneId, path)
+    getBackend().watchFile(paneId, path)
       .then(content => renderMarkdown(content))
       .catch(e => { error = `Failed to open file: ${e}`; });
   });
@@ -59,7 +60,7 @@
       await getHighlighter();
       highlighterReady = true;
 
-      unlisten = await onFileChanged((payload: FileChangedPayload) => {
+      unlisten = getBackend().onFileChanged((payload: FileChangedPayload) => {
         if (payload.pane_id === paneId) {
           renderMarkdown(payload.content);
         }
@@ -71,7 +72,7 @@
 
   onDestroy(() => {
     unlisten?.();
-    unwatchFile(paneId).catch(() => {});
+    getBackend().ungetBackend().watchFile(paneId).catch(() => {});
   });
 
   function handleLinkClick(event: MouseEvent) {

src/lib/components/StatusBar/StatusBar.svelte

@@ -4,8 +4,7 @@
   import { getHealthAggregates, getAttentionQueue, type ProjectHealth } from '../../stores/health.svelte';
   import { getTotalConflictCount } from '../../stores/conflicts.svelte';
   import { clearWakeScheduler } from '../../stores/wake-scheduler.svelte';
-  import { stopAgent } from '../../adapters/agent-bridge';
-  import { setAgentStatus as setBtmsgAgentStatus } from '../../adapters/btmsg-bridge';
+  import { getBackend } from '../../backend/backend';
   import { getSessionProjectId } from '../../utils/session-persistence';
   import type { AgentId } from '../../types/ids';
   import { onMount } from 'svelte';
@@ -42,9 +41,9 @@
       for (const s of active) {
         updateAgentStatus(s.id, 'done');
         const projId = getSessionProjectId(s.id);
-        if (projId) setBtmsgAgentStatus(projId as unknown as AgentId, 'stopped').catch(() => {});
+        if (projId) getBackend().btmsgSetStatus(projId as unknown as AgentId, 'stopped').catch(() => {});
       }
-      await Promise.all(active.map(s => stopAgent(s.id).catch(() => {})));
+      await Promise.all(active.map(s => getBackend().stopAgentDirect(s.id).catch(() => {})));
     } finally {
       stopping = false;
     }

src/lib/components/Terminal/TerminalPane.svelte

@@ -3,9 +3,9 @@
   import { Terminal } from '@xterm/xterm';
   import { CanvasAddon } from '@xterm/addon-canvas';
   import { FitAddon } from '@xterm/addon-fit';
-  import { spawnPty, writePty, resizePty, killPty, onPtyData, onPtyExit } from '../../adapters/pty-bridge';
+  import { getBackend } from '../../backend/backend';
   import { getXtermTheme, onThemeChange } from '../../stores/theme.svelte';
-  import type { UnlistenFn } from '@tauri-apps/api/event';
+  import type { UnsubscribeFn } from '@agor/types';
   import '@xterm/xterm/css/xterm.css';
 
   interface Props {
@@ -21,8 +21,8 @@
   let term: Terminal;
   let fitAddon: FitAddon;
   let ptyId: string | null = null;
-  let unlistenData: UnlistenFn | null = null;
-  let unlistenExit: UnlistenFn | null = null;
+  let unlistenData: UnsubscribeFn | null = null;
+  let unlistenExit: UnsubscribeFn | null = null;
   let resizeObserver: ResizeObserver | null = null;
   let unsubTheme: (() => void) | null = null;
 
@@ -48,14 +48,14 @@
 
     // Spawn PTY
     try {
-      ptyId = await spawnPty({ shell, cwd, args, cols, rows });
+      ptyId = await getBackend().spawnPty({ shell, cwd, args, cols, rows });
 
       // Listen for PTY output
-      unlistenData = await onPtyData(ptyId, (data) => {
+      unlistenData = getBackend().onPtyData(ptyId, (data) => {
         term.write(data);
       });
 
-      unlistenExit = await onPtyExit(ptyId, () => {
+      unlistenExit = getBackend().onPtyExit(ptyId, () => {
         term.write('\r\n\x1b[90m[Process exited]\x1b[0m\r\n');
         onExit?.();
       });
@@ -70,7 +70,7 @@
           }
           if (e.key === 'V') {
             navigator.clipboard.readText().then(text => {
-              if (text && ptyId) writePty(ptyId, text);
+              if (text && ptyId) getBackend().writePtyDirect(ptyId, text);
             });
             return false;
           }
@@ -80,7 +80,7 @@
 
       // Forward keyboard input to PTY
       term.onData((data) => {
-        if (ptyId) writePty(ptyId, data);
+        if (ptyId) getBackend().writePtyDirect(ptyId, data);
       });
     } catch (e) {
       term.write(`\x1b[31mFailed to spawn terminal: ${e}\x1b[0m\r\n`);
@@ -94,7 +94,7 @@
         fitAddon.fit();
         if (ptyId) {
           const { cols, rows } = term;
-          resizePty(ptyId, cols, rows);
+          getBackend().resizePtyDirect(ptyId, cols, rows);
         }
       }, 100);
     });
@@ -112,7 +112,7 @@
     unlistenData?.();
     unlistenExit?.();
     if (ptyId) {
-      try { await killPty(ptyId); } catch { /* already dead */ }
+      try { await getBackend().killPty(ptyId); } catch { /* already dead */ }
     }
     term?.dispose();
   });

src/lib/components/Workspace/AgentSession.svelte

@@ -3,17 +3,11 @@
   import type { ProjectConfig, GroupAgentRole } from '../../types/groups';
   import { generateAgentPrompt } from '../../utils/agent-prompts';
   import { getActiveGroup } from '../../stores/workspace.svelte';
-  import { logAuditEvent } from '../../adapters/audit-bridge';
+  import { getBackend } from '../../backend/backend';
   import type { AgentId } from '../../types/ids';
-  import {
-    loadProjectAgentState,
-    loadAgentMessages,
-    type ProjectAgentState,
-    type AgentMessageRecord,
-  } from '../../adapters/groups-bridge';
+  import type { ProjectAgentState, AgentMessageRecord } from '@agor/types';
   import { registerSessionProject } from '../../agent-dispatcher';
   import { onAgentStart, onAgentStop } from '../../stores/workspace.svelte';
-  import { stopAgent } from '../../adapters/agent-bridge';
   import { trackProject, updateProjectSession } from '../../stores/health.svelte';
   import {
     createAgentSession,
@@ -26,8 +20,6 @@
   import type { AgentMessage } from '../../adapters/claude-messages';
   import { getProvider, getDefaultProviderId } from '../../providers/registry.svelte';
   import { loadAnchorsForProject } from '../../stores/anchors.svelte';
-  import { getSecret } from '../../adapters/secrets-bridge';
-  import { getUnseenMessages, markMessagesSeen, setAgentStatus as setBtmsgAgentStatus } from '../../adapters/btmsg-bridge';
   import { getWakeEvent, consumeWakeEvent, updateManagerSession } from '../../stores/wake-scheduler.svelte';
   import { SessionId, ProjectId } from '../../types/ids';
   import AgentPane from '../Agent/AgentPane.svelte';
@@ -95,7 +87,7 @@ bttask comment <task-id> "update"  # Add a comment
 
   $effect(() => {
     if (providerId === 'aider') {
-      getSecret('openrouter_api_key').then(key => {
+      getBackend().getSecret('openrouter_api_key').then(key => {
         openrouterKey = key;
       }).catch(() => {});
     } else {
@@ -133,7 +125,7 @@ bttask comment <task-id> "update"  # Add a comment
           : '[Context Refresh] Review the instructions above and continue your work.';
         contextRefreshPrompt = refreshMsg;
         // Audit: log prompt injection event
-        logAuditEvent(
+        getBackend().logAuditEvent(
           project.id as unknown as AgentId,
           'prompt_injection',
           `Context refresh triggered after ${Math.floor(elapsed / 60_000)} min idle`,
@@ -159,8 +151,8 @@ bttask comment <task-id> "update"  # Add a comment
   const unsubAgentStop = onAgentStop((projectId) => {
     if (projectId !== project.id) return;
     updateAgentStatus(sessionId, 'done');
-    setBtmsgAgentStatus(project.id as unknown as AgentId, 'stopped').catch(() => {});
-    stopAgent(sessionId).catch(() => {});
+    getBackend().btmsgSetStatus(project.id as unknown as AgentId, 'stopped').catch(() => {});
+    getBackend().stopAgentDirect(sessionId).catch(() => {});
   });
 
   // btmsg inbox polling — per-message acknowledgment wake mechanism
@@ -173,7 +165,7 @@ bttask comment <task-id> "update"  # Add a comment
     msgPollTimer = setInterval(async () => {
       if (contextRefreshPrompt) return; // Don't queue if already has a pending prompt
       try {
-        const unseen = await getUnseenMessages(
+        const unseen = await getBackend().btmsgUnseenMessages(
           project.id as unknown as AgentId,
           sessionId,
         );
@@ -185,9 +177,9 @@ bttask comment <task-id> "update"  # Add a comment
           contextRefreshPrompt = `[New Messages] You have ${unseen.length} unread message(s):\n\n${msgSummary}\n\nRespond appropriately using \`btmsg send <agent-id> "reply"\`.`;
 
           // Mark as seen immediately to prevent re-injection
-          await markMessagesSeen(sessionId, unseen.map(m => m.id));
+          await getBackend().btmsgMarkSeen(sessionId, unseen.map(m => m.id));
 
-          logAuditEvent(
+          getBackend().logAuditEvent(
             project.id as unknown as AgentId,
             'wake_event',
             `Agent woken by ${unseen.length} btmsg message(s)`,
@@ -277,13 +269,13 @@ bttask comment <task-id> "update"  # Add a comment
     loading = true;
     hasRestoredHistory = false;
     try {
-      const state = await loadProjectAgentState(projectId);
+      const state = await getBackend().loadProjectAgentState(projectId);
       lastState = state;
       if (state?.last_session_id) {
         sessionId = SessionId(state.last_session_id);
 
         // Restore cached messages into the agent store
-        const records = await loadAgentMessages(projectId);
+        const records = await getBackend().loadAgentMessages(projectId);
         if (records.length > 0) {
           restoreMessagesFromRecords(sessionId, state, records);
           hasRestoredHistory = true;

src/lib/components/Workspace/ArchitectureTab.svelte

@@ -1,6 +1,8 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import { listDirectoryChildren, readFileContent, writeFileContent, type DirEntry } from '../../adapters/files-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { FileEntry } from '@agor/types';
+  type DirEntry = FileEntry;
 
   interface Props {
     cwd: string;
@@ -90,7 +92,7 @@ package "Backend" {
 
   async function loadDiagrams() {
     try {
-      const entries = await listDirectoryChildren(archPath);
+      const entries = await getBackend().listDirectory(archPath);
       diagrams = entries.filter(e => e.name.endsWith('.puml') || e.name.endsWith('.plantuml'));
     } catch {
       // Directory might not exist yet
@@ -108,7 +110,7 @@ package "Backend" {
     error = null;
     editing = false;
     try {
-      const content = await readFileContent(filePath);
+      const content = await getBackend().readFile(filePath);
       if (content.type === 'Text') {
         pumlSource = content.content;
         renderPlantUml(content.content);
@@ -131,7 +133,7 @@ package "Backend" {
   async function handleSave() {
     if (!selectedFile) return;
     try {
-      await writeFileContent(selectedFile, pumlSource);
+      await getBackend().writeFile(selectedFile, pumlSource);
       renderPlantUml(pumlSource);
       editing = false;
     } catch (e) {
@@ -144,7 +146,7 @@ package "Backend" {
     const fileName = newName.trim().replace(/\s+/g, '-').toLowerCase();
     const filePath = `${archPath}/${fileName}.puml`;
     try {
-      await writeFileContent(filePath, template);
+      await getBackend().writeFile(filePath, template);
       showNewForm = false;
       newName = '';
       await loadDiagrams();

src/lib/components/Workspace/AuditLogTab.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import { onMount, onDestroy } from 'svelte';
-  import { getAuditLog, type AuditEntry, type AuditEventType } from '../../adapters/audit-bridge';
-  import { getGroupAgents, type BtmsgAgent } from '../../adapters/btmsg-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { AuditEntry, AuditEventType, BtmsgAgent } from '@agor/types';
   import type { GroupId, AgentId } from '../../types/ids';
 
   interface Props {
@@ -88,8 +88,8 @@
   async function fetchData() {
     try {
       const [auditData, agentData] = await Promise.all([
-        getAuditLog(groupId, 200, 0),
-        getGroupAgents(groupId),
+        getBackend().getAuditLog(groupId, 200, 0),
+        getBackend().btmsgGetAgents(groupId),
       ]);
       entries = auditData;
       agents = agentData;

src/lib/components/Workspace/CommsTab.svelte

@@ -2,25 +2,11 @@
   import { onMount, onDestroy } from 'svelte';
   import { confirm } from '@tauri-apps/plugin-dialog';
   import { getActiveGroup, emitAgentStart } from '../../stores/workspace.svelte';
-  import {
-    type BtmsgAgent,
-    type BtmsgMessage,
-    type BtmsgFeedMessage,
-    type BtmsgChannel,
-    type BtmsgChannelMessage,
-    getGroupAgents,
-    getHistory,
-    getAllFeed,
-    sendMessage,
-    markRead,
-    ensureAdmin,
-    getChannels,
-    getChannelMessages,
-    sendChannelMessage,
-    createChannel,
-    setAgentStatus,
-    clearAllComms,
-  } from '../../adapters/btmsg-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type {
+    BtmsgAgent, BtmsgMessage, BtmsgFeedMessage,
+    BtmsgChannel, BtmsgChannelMessage,
+  } from '@agor/types';
 
   const ADMIN_ID = 'admin';
   const ROLE_ICONS: Record<string, string> = {
@@ -55,8 +41,8 @@
   async function loadData() {
     if (!groupId) return;
     try {
-      agents = await getGroupAgents(groupId);
-      channels = await getChannels(groupId);
+      agents = await getBackend().btmsgGetAgents(groupId);
+      channels = await getBackend().btmsgGetChannels(groupId);
     } catch (e) {
       console.error('[CommsTab] loadData failed:', e);
     }
@@ -66,12 +52,12 @@
     if (!groupId) return;
     try {
       if (currentView.type === 'feed') {
-        feedMessages = await getAllFeed(groupId, 100);
+        feedMessages = await getBackend().btmsgAllFeed(groupId, 100);
       } else if (currentView.type === 'dm') {
-        dmMessages = await getHistory(ADMIN_ID, currentView.agentId, 100);
-        await markRead(ADMIN_ID, currentView.agentId);
+        dmMessages = await getBackend().btmsgHistory(ADMIN_ID, currentView.agentId, 100);
+        await getBackend().btmsgMarkRead(ADMIN_ID, currentView.agentId);
       } else if (currentView.type === 'channel') {
-        channelMessages = await getChannelMessages(currentView.channelId, 100);
+        channelMessages = await getBackend().btmsgChannelMessages(currentView.channelId, 100);
       }
     } catch (e) {
       console.error('[CommsTab] loadMessages failed:', e);
@@ -95,7 +81,7 @@
     void groupId;
     if (groupId) {
       console.log('[CommsTab] groupId:', groupId);
-      ensureAdmin(groupId).catch((e) => console.error('[CommsTab] ensureAdmin failed:', e));
+      getBackend().btmsgEnsureAdmin(groupId).catch((e) => console.error('[CommsTab] ensureAdmin failed:', e));
       loadData();
     }
   });
@@ -129,16 +115,16 @@
 
     try {
       if (currentView.type === 'dm') {
-        await sendMessage(ADMIN_ID, currentView.agentId, text);
+        await getBackend().btmsgSend(ADMIN_ID, currentView.agentId, text);
         // Auto-wake agent if stopped
         const recipient = agents.find(a => a.id === currentView.agentId);
         if (recipient && recipient.status !== 'active') {
-          await setAgentStatus(currentView.agentId, 'active');
+          await getBackend().btmsgSetStatus(currentView.agentId, 'active');
           emitAgentStart(currentView.agentId);
           await pollBtmsg();
         }
       } else if (currentView.type === 'channel') {
-        await sendChannelMessage(currentView.channelId, ADMIN_ID, text);
+        await getBackend().btmsgChannelSend(currentView.channelId, ADMIN_ID, text);
       } else {
         return; // Can't send in feed view
       }
@@ -166,7 +152,7 @@
     const name = newChannelName.trim();
     if (!name || !groupId) return;
     try {
-      await createChannel(name, groupId, ADMIN_ID);
+      await getBackend().btmsgCreateChannel(name, groupId, ADMIN_ID);
       newChannelName = '';
       showNewChannel = false;
       await loadData();
@@ -206,7 +192,7 @@
     if (!confirmed) return;
     clearing = true;
     try {
-      await clearAllComms(groupId);
+      await getBackend().btmsgClearAllComms(groupId);
       feedMessages = [];
       dmMessages = [];
       channelMessages = [];

src/lib/components/Workspace/DocsTab.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { getActiveProjectId, getActiveGroup } from '../../stores/workspace.svelte';
-  import { discoverMarkdownFiles, type MdFileEntry } from '../../adapters/groups-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { MdFileEntry } from '@agor/types';
   import MarkdownPane from '../Markdown/MarkdownPane.svelte';
 
   let files = $state<MdFileEntry[]>([]);
@@ -26,7 +27,7 @@
   async function loadFiles(cwd: string) {
     loading = true;
     try {
-      files = await discoverMarkdownFiles(cwd);
+      files = await getBackend().discoverMarkdownFiles(cwd);
       // Auto-select first priority file
       const priority = files.find(f => f.priority);
       selectedPath = priority?.path ?? files[0]?.path ?? null;

src/lib/components/Workspace/FilesTab.svelte

@@ -1,5 +1,7 @@
 <script lang="ts">
-  import { listDirectoryChildren, readFileContent, writeFileContent, type DirEntry, type FileContent } from '../../adapters/files-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { FileEntry, FileContent } from '@agor/types';
+  type DirEntry = FileEntry;
   import { getSetting } from '../../stores/settings-store.svelte';
   import { convertFileSrc } from '@tauri-apps/api/core';
   import CodeEditor from './CodeEditor.svelte';
@@ -61,7 +63,7 @@
 
   async function loadDirectory(path: string): Promise<DirEntry[]> {
     try {
-      return await listDirectoryChildren(path);
+      return await getBackend().listDirectory(path);
     } catch (e) {
       console.warn('Failed to list directory:', e);
       return [];
@@ -125,7 +127,7 @@
     // Load content — must look up from reactive array, not local reference
     fileLoading = true;
     try {
-      const content = await readFileContent(node.path);
+      const content = await getBackend().readFile(node.path);
       const target = fileTabs.find(t => t.path === node.path);
       if (target) {
         target.content = content;
@@ -229,7 +231,7 @@
   async function saveTab(tab: FileTab) {
     if (!tab.dirty || tab.content?.type !== 'Text') return;
     try {
-      await writeFileContent(tab.path, tab.editContent);
+      await getBackend().writeFile(tab.path, tab.editContent);
       // Update the saved content reference
       tab.content = { type: 'Text', content: tab.editContent, lang: tab.content.lang };
       tab.dirty = false;

src/lib/components/Workspace/GroupAgentsPanel.svelte

@@ -2,7 +2,8 @@
   import { onMount, onDestroy } from 'svelte';
   import { getActiveGroup, getEnabledProjects, setActiveProject, emitAgentStart, emitAgentStop } from '../../stores/workspace.svelte';
   import type { GroupAgentConfig, GroupAgentStatus, ProjectConfig } from '../../types/groups';
-  import { getGroupAgents, setAgentStatus, type BtmsgAgent } from '../../adapters/btmsg-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { BtmsgAgent } from '@agor/types';
   import type { AgentId } from '../../types/ids';
 
   /** Runtime agent status from btmsg database */
@@ -32,7 +33,7 @@
   async function pollBtmsg() {
     if (!group) return;
     try {
-      btmsgAgents = await getGroupAgents(group.id);
+      btmsgAgents = await getBackend().btmsgGetAgents(group.id);
     } catch {
       // btmsg.db might not exist yet
     }
@@ -61,7 +62,7 @@
     const current = getStatus(agent.id);
     const newStatus = current === 'stopped' ? 'active' : 'stopped';
     try {
-      await setAgentStatus(agent.id, newStatus);
+      await getBackend().btmsgSetStatus(agent.id, newStatus);
       await pollBtmsg(); // Refresh immediately
       if (newStatus === 'active') {
         emitAgentStart(agent.id);

src/lib/components/Workspace/MetricsPanel.svelte

@@ -5,7 +5,8 @@
   import type { GroupId, ProjectId as ProjectIdType } from '../../types/ids';
   import { getProjectHealth, getAllProjectHealth, getHealthAggregates } from '../../stores/health.svelte';
   import { getAgentSession } from '../../stores/agents.svelte';
-  import { listTasks, type Task } from '../../adapters/bttask-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { Task } from '@agor/types';
   import { invoke } from '@tauri-apps/api/core';
 
   interface Props {
@@ -51,7 +52,7 @@
   async function fetchTaskCounts() {
     if (!groupId) return;
     try {
-      const tasks = await listTasks(groupId);
+      const tasks = await getBackend().bttaskList(groupId);
       const counts: Record<string, number> = { todo: 0, progress: 0, review: 0, done: 0, blocked: 0 };
       for (const t of tasks) {
         if (counts[t.status] !== undefined) counts[t.status]++;

src/lib/components/Workspace/ProjectBox.svelte

@@ -26,14 +26,12 @@
     getFocusFlashProjectId, onProjectTabSwitch, onTerminalToggle,
   } from '../../stores/workspace.svelte';
   import { getProjectHealth, setStallThreshold } from '../../stores/health.svelte';
-  import { fsWatchProject, fsUnwatchProject, onFsWriteDetected, fsWatcherStatus } from '../../adapters/fs-watcher-bridge';
+  import { getBackend } from '../../backend/backend';
   import { recordExternalWrite } from '../../stores/conflicts.svelte';
   import { ProjectId, type AgentId, type GroupId } from '../../types/ids';
   import { notify, dismissNotification } from '../../stores/notifications.svelte';
   import { registerManager, unregisterManager, updateManagerConfig } from '../../stores/wake-scheduler.svelte';
   import { setReviewQueueDepth } from '../../stores/health.svelte';
-  import { reviewQueueCount } from '../../adapters/bttask-bridge';
-  import { getStaleAgents } from '../../adapters/btmsg-bridge';
 
   interface Props {
     project: ProjectConfig;
@@ -155,7 +153,7 @@
     if (!groupId) return;
 
     const pollReviewQueue = () => {
-      reviewQueueCount(groupId)
+      getBackend().bttaskReviewQueueCount(groupId)
         .then(count => setReviewQueueDepth(project.id, count))
         .catch(() => {}); // best-effort
     };
@@ -173,11 +171,11 @@
 
     const pollHeartbeat = () => {
       // 300s = healthy threshold, 600s = dead threshold
-      getStaleAgents(groupId as unknown as GroupId, 300)
+      getBackend().btmsgGetStaleAgents(groupId as unknown as GroupId, 300)
         .then(staleIds => {
           if (staleIds.includes(project.id)) {
             // Check if truly dead (>10 min)
-            getStaleAgents(groupId as unknown as GroupId, 600)
+            getBackend().btmsgGetStaleAgents(groupId as unknown as GroupId, 600)
               .then(deadIds => {
                 heartbeatStatus = deadIds.includes(project.id) ? 'dead' : 'stale';
               })
@@ -207,8 +205,8 @@
       scanToastId = notify('info', 'Scanning project directories…');
     }, 300);
 
-    fsWatchProject(projectId, cwd)
-      .then(() => fsWatcherStatus())
+    getBackend().fsWatchProject(projectId, cwd)
+      .then(() => getBackend().fsWatcherStatus())
       .then((status) => {
         clearTimeout(scanTimer);
         if (scanToastId) dismissNotification(scanToastId);
@@ -224,7 +222,7 @@
 
     // Listen for fs write events (filter to this project)
     let unlisten: (() => void) | null = null;
-    onFsWriteDetected((event) => {
+    getBackend().onFsWriteDetected((event) => {
       if (event.project_id !== projectId) return;
       const isNew = recordExternalWrite(ProjectId(projectId), event.file_path, event.timestamp_ms);
       if (isNew) {
@@ -235,7 +233,7 @@
 
     return () => {
       // Cleanup: stop watching on unmount or project change
-      fsUnwatchProject(projectId).catch(() => {});
+      getBackend().fsUnwatchProject(projectId).catch(() => {});
       unlisten?.();
     };
   });

src/lib/components/Workspace/ProjectFiles.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
-  import { discoverMarkdownFiles, type MdFileEntry } from '../../adapters/groups-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { MdFileEntry } from '@agor/types';
   import MarkdownPane from '../Markdown/MarkdownPane.svelte';
 
   interface Props {
@@ -31,7 +32,7 @@
   async function loadFiles(dir: string) {
     loading = true;
     try {
-      files = await discoverMarkdownFiles(dir);
+      files = await getBackend().discoverMarkdownFiles(dir);
       const priority = files.find(f => f.priority);
       selectedPath = priority?.path ?? files[0]?.path ?? null;
     } catch (e) {

src/lib/components/Workspace/SearchOverlay.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import { searchAll, type SearchResult } from '../../adapters/search-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { SearchResult } from '@agor/types';
   import { setActiveProject } from '../../stores/workspace.svelte';
 
   interface Props {
@@ -64,7 +65,7 @@
     loading = true;
     debounceTimer = setTimeout(async () => {
       try {
-        results = await searchAll(query, 30);
+        results = await getBackend().searchAll(query, 30);
       } catch {
         results = [];
       } finally {

src/lib/components/Workspace/SettingsTab.svelte

@@ -21,16 +21,20 @@
   import { getSetting, setSetting } from '../../stores/settings-store.svelte';
   import { getCurrentTheme, setTheme } from '../../stores/theme.svelte';
   import { THEME_LIST, getPalette, type ThemeId } from '../../styles/themes';
-  import { listProfiles, type ClaudeProfile } from '../../adapters/claude-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { ClaudeProfile } from '@agor/types';
   import { invoke } from '@tauri-apps/api/core';
   import { getProviders } from '../../providers/registry.svelte';
   import type { ProviderId, ProviderSettings } from '../../providers/types';
   import { ANCHOR_BUDGET_SCALES, ANCHOR_BUDGET_SCALE_LABELS, type AnchorBudgetScale } from '../../types/anchors';
   import { WAKE_STRATEGIES, WAKE_STRATEGY_LABELS, WAKE_STRATEGY_DESCRIPTIONS, type WakeStrategy } from '../../types/wake';
-  import {
-    storeSecret, getSecret, deleteSecret, listSecrets,
-    hasKeyring, knownSecretKeys, SECRET_KEY_LABELS,
-  } from '../../adapters/secrets-bridge';
+  const SECRET_KEY_LABELS: Record<string, string> = {
+    anthropic_api_key: 'Anthropic API Key',
+    openai_api_key: 'OpenAI API Key',
+    openrouter_api_key: 'OpenRouter API Key',
+    github_token: 'GitHub Token',
+    relay_token: 'Relay Token',
+  };
   import {
     checkForUpdates,
     getCurrentVersion,
@@ -176,7 +180,7 @@
     selectedTheme = getCurrentTheme();
 
     try {
-      profiles = await listProfiles();
+      profiles = await getBackend().listProfiles();
     } catch {
       profiles = [];
     }
@@ -191,10 +195,10 @@
 
     // Load secrets state
     try {
-      keyringAvailable = await hasKeyring();
+      keyringAvailable = await getBackend().hasKeyring();
       if (keyringAvailable) {
-        storedKeys = await listSecrets();
-        knownKeys = await knownSecretKeys();
+        storedKeys = await getBackend().listSecrets();
+        knownKeys = await getBackend().knownSecretKeys();
       }
     } catch {
       keyringAvailable = false;
@@ -317,7 +321,7 @@
       return;
     }
     try {
-      const val = await getSecret(key);
+      const val = await getBackend().getSecret(key);
       revealedKey = key;
       revealedValue = val ?? '';
     } catch (e) {
@@ -329,8 +333,8 @@
     if (!newSecretKey || !newSecretValue) return;
     secretsSaving = true;
     try {
-      await storeSecret(newSecretKey, newSecretValue);
-      storedKeys = await listSecrets();
+      await getBackend().storeSecret(newSecretKey, newSecretValue);
+      storedKeys = await getBackend().listSecrets();
       newSecretKey = '';
       newSecretValue = '';
       // If we just saved the currently revealed key, clear reveal
@@ -345,8 +349,8 @@
 
   async function handleDeleteSecret(key: string) {
     try {
-      await deleteSecret(key);
-      storedKeys = await listSecrets();
+      await getBackend().deleteSecret(key);
+      storedKeys = await getBackend().listSecrets();
       if (revealedKey === key) {
         revealedKey = null;
         revealedValue = '';

src/lib/components/Workspace/SshTab.svelte

@@ -1,6 +1,8 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import { listSshSessions, saveSshSession, deleteSshSession, type SshSession } from '../../adapters/ssh-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { SshSessionRecord } from '@agor/types';
+  type SshSession = SshSessionRecord;
   import { addTerminalTab } from '../../stores/workspace.svelte';
 
   interface Props {
@@ -27,7 +29,7 @@
   async function loadSessions() {
     loading = true;
     try {
-      sessions = await listSshSessions();
+      sessions = await getBackend().listSshSessions();
     } catch (e) {
       console.warn('Failed to load SSH sessions:', e);
     } finally {
@@ -79,7 +81,7 @@
     };
 
     try {
-      await saveSshSession(session);
+      await getBackend().saveSshSession(session);
       await loadSessions();
       resetForm();
     } catch (e) {
@@ -89,7 +91,7 @@
 
   async function removeSession(id: string) {
     try {
-      await deleteSshSession(id);
+      await getBackend().deleteSshSession(id);
       await loadSessions();
     } catch (e) {
       console.warn('Failed to delete SSH session:', e);

src/lib/components/Workspace/TaskBoardTab.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { onMount, onDestroy } from 'svelte';
-  import { listTasks, updateTaskStatus, createTask, deleteTask, addTaskComment, type Task, type TaskComment, getTaskComments } from '../../adapters/bttask-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { Task, TaskComment } from '@agor/types';
   import type { GroupId } from '../../types/ids';
   import { AgentId } from '../../types/ids';
 
@@ -64,7 +65,7 @@
 
   async function loadTasks() {
     try {
-      tasks = await listTasks(groupId);
+      tasks = await getBackend().bttaskList(groupId);
       error = null;
     } catch (e) {
       error = String(e);
@@ -86,7 +87,7 @@
     try {
       const task = tasks.find(t => t.id === taskId);
       const version = task?.version ?? 1;
-      await updateTaskStatus(taskId, newStatus, version);
+      await getBackend().bttaskUpdateStatus(taskId, newStatus, version);
       await loadTasks();
     } catch (e: any) {
       const msg = e?.message ?? String(e);
@@ -102,7 +103,7 @@
   async function handleAddTask() {
     if (!newTitle.trim()) return;
     try {
-      await createTask(newTitle.trim(), newDesc.trim(), newPriority, groupId, AgentId('admin'));
+      await getBackend().bttaskCreate(newTitle.trim(), newDesc.trim(), newPriority, groupId, AgentId('admin'));
       newTitle = '';
       newDesc = '';
       newPriority = 'medium';
@@ -115,7 +116,7 @@
 
   async function handleDelete(taskId: string) {
     try {
-      await deleteTask(taskId);
+      await getBackend().bttaskDelete(taskId);
       if (expandedTaskId === taskId) expandedTaskId = null;
       await loadTasks();
     } catch (e) {
@@ -130,7 +131,7 @@
     }
     expandedTaskId = taskId;
     try {
-      taskComments = await getTaskComments(taskId);
+      taskComments = await getBackend().bttaskComments(taskId);
     } catch {
       taskComments = [];
     }
@@ -139,9 +140,9 @@
   async function handleAddComment() {
     if (!expandedTaskId || !newComment.trim()) return;
     try {
-      await addTaskComment(expandedTaskId, AgentId('admin'), newComment.trim());
+      await getBackend().bttaskAddComment(expandedTaskId, AgentId('admin'), newComment.trim());
       newComment = '';
-      taskComments = await getTaskComments(expandedTaskId);
+      taskComments = await getBackend().bttaskComments(expandedTaskId);
     } catch (e) {
       console.warn('Failed to add comment:', e);
     }

src/lib/components/Workspace/TerminalTabs.svelte

@@ -7,7 +7,9 @@
     removeTerminalTab,
     type TerminalTab,
   } from '../../stores/workspace.svelte';
-  import { listSshSessions, type SshSession } from '../../adapters/ssh-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { SshSessionRecord } from '@agor/types';
+  type SshSession = SshSessionRecord;
   import TerminalPane from '../Terminal/TerminalPane.svelte';
   import AgentPreviewPane from '../Terminal/AgentPreviewPane.svelte';
 
@@ -15,7 +17,7 @@
   let sshSessions = $state<SshSession[]>([]);
 
   onMount(() => {
-    listSshSessions().then(s => { sshSessions = s; }).catch(() => {});
+    getBackend().listSshSessions().then(s => { sshSessions = s; }).catch(() => {});
   });
 
   /** Resolved SSH args per tab, keyed by tab id */

src/lib/components/Workspace/TestingTab.svelte

@@ -1,7 +1,9 @@
 <script lang="ts">
   import { onMount, onDestroy } from 'svelte';
   import { convertFileSrc } from '@tauri-apps/api/core';
-  import { listDirectoryChildren, readFileContent, type DirEntry } from '../../adapters/files-bridge';
+  import { getBackend } from '../../backend/backend';
+  import type { FileEntry } from '@agor/types';
+  type DirEntry = FileEntry;
 
   interface Props {
     cwd: string;
@@ -23,7 +25,7 @@
   async function loadSeleniumState() {
     const screenshotPath = `${cwd}/${SCREENSHOTS_DIR}`;
     try {
-      const entries = await listDirectoryChildren(screenshotPath);
+      const entries = await getBackend().listDirectory(screenshotPath);
       const imageFiles = entries
         .filter(e => /\.(png|jpg|jpeg|webp)$/i.test(e.name))
         .map(e => e.path)
@@ -43,7 +45,7 @@
 
     // Load session log
     try {
-      const content = await readFileContent(`${cwd}/${SELENIUM_LOG}`);
+      const content = await getBackend().readFile(`${cwd}/${SELENIUM_LOG}`);
       if (content.type === 'Text') {
         seleniumLog = content.content.split('\n').filter(Boolean).slice(-50);
       }
@@ -64,7 +66,7 @@
   async function loadTestFiles() {
     for (const dir of TEST_DIRS) {
       try {
-        const entries = await listDirectoryChildren(`${cwd}/${dir}`);
+        const entries = await getBackend().listDirectory(`${cwd}/${dir}`);
         const tests = entries.filter(e =>
           /\.(test|spec)\.(ts|js|py|rs)$/.test(e.name) ||
           /test_.*\.py$/.test(e.name)
@@ -83,7 +85,7 @@
   async function viewTestFile(filePath: string) {
     selectedTestFile = filePath;
     try {
-      const content = await readFileContent(filePath);
+      const content = await getBackend().readFile(filePath);
       if (content.type === 'Text') {
         testOutput = content.content;
       }

src/lib/plugins/plugin-host.test.ts

@@ -2,12 +2,18 @@ import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 
 // --- Mocks ---
 
-const { mockInvoke } = vi.hoisted(() => ({
-  mockInvoke: vi.fn(),
+const { mockBackend } = vi.hoisted(() => ({
+  mockBackend: {
+    readPluginFile: vi.fn(),
+    bttaskList: vi.fn().mockResolvedValue([]),
+    bttaskComments: vi.fn().mockResolvedValue([]),
+    btmsgUnreadMessages: vi.fn().mockResolvedValue([]),
+    btmsgGetChannels: vi.fn().mockResolvedValue([]),
+  },
 }));
 
-vi.mock('@tauri-apps/api/core', () => ({
-  invoke: mockInvoke,
+vi.mock('../backend/backend', () => ({
+  getBackend: vi.fn(() => mockBackend),
 }));
 
 // Mock the plugins store to avoid Svelte 5 rune issues in test context
@@ -41,7 +47,7 @@ import {
   unloadAllPlugins,
 } from './plugin-host';
 import { addPluginCommand, removePluginCommands, pluginEventBus } from '../stores/plugins.svelte';
-import type { PluginMeta } from '../adapters/plugins-bridge';
+import type { PluginMeta } from '@agor/types';
 import type { GroupId, AgentId } from '../types/ids';
 
 // --- Mock Worker ---
@@ -208,10 +214,7 @@ function makeMeta(overrides: Partial<PluginMeta> = {}): PluginMeta {
 }
 
 function mockPluginCode(code: string): void {
-  mockInvoke.mockImplementation((cmd: string) => {
-    if (cmd === 'plugin_read_file') return Promise.resolve(code);
-    return Promise.reject(new Error(`Unexpected invoke: ${cmd}`));
-  });
+  mockBackend.readPluginFile.mockResolvedValue(code);
 }
 
 const GROUP_ID = 'test-group' as GroupId;
@@ -481,7 +484,7 @@ describe('plugin-host lifecycle', () => {
 
   it('loadPlugin throws on file read failure', async () => {
     const meta = makeMeta({ id: 'read-fail' });
-    mockInvoke.mockRejectedValue(new Error('file not found'));
+    mockBackend.readPluginFile.mockRejectedValue(new Error('file not found'));
 
     await expect(loadPlugin(meta, GROUP_ID, AGENT_ID)).rejects.toThrow(
       "Failed to read plugin 'read-fail'",
@@ -509,12 +512,7 @@ describe('plugin-host RPC routing', () => {
     const meta = makeMeta({ id: 'rpc-tasks', permissions: ['bttask:read'] });
     mockPluginCode(`agor.tasks.list();`);
 
-    // Mock the bttask bridge
-    mockInvoke.mockImplementation((cmd: string) => {
-      if (cmd === 'plugin_read_file') return Promise.resolve('agor.tasks.list();');
-      if (cmd === 'bttask_list') return Promise.resolve([]);
-      return Promise.reject(new Error(`Unexpected: ${cmd}`));
-    });
+    // bttaskList already mocked via mockBackend defaults
 
     await expect(loadPlugin(meta, GROUP_ID, AGENT_ID)).resolves.toBeUndefined();
   });
@@ -523,11 +521,7 @@ describe('plugin-host RPC routing', () => {
     const meta = makeMeta({ id: 'rpc-messages', permissions: ['btmsg:read'] });
     mockPluginCode(`agor.messages.inbox();`);
 
-    mockInvoke.mockImplementation((cmd: string) => {
-      if (cmd === 'plugin_read_file') return Promise.resolve('agor.messages.inbox();');
-      if (cmd === 'btmsg_get_unread') return Promise.resolve([]);
-      return Promise.reject(new Error(`Unexpected: ${cmd}`));
-    });
+    // btmsgUnreadMessages already mocked via mockBackend defaults
 
     await expect(loadPlugin(meta, GROUP_ID, AGENT_ID)).resolves.toBeUndefined();
   });

src/lib/plugins/plugin-host.ts

@@ -12,13 +12,8 @@
  * On unload, the Worker is terminated — all plugin state is destroyed.
  */
 
-import type { PluginMeta } from '../adapters/plugins-bridge';
-import { readPluginFile } from '../adapters/plugins-bridge';
-import { listTasks, getTaskComments } from '../adapters/bttask-bridge';
-import {
-  getUnreadMessages,
-  getChannels,
-} from '../adapters/btmsg-bridge';
+import type { PluginMeta } from '@agor/types';
+import { getBackend } from '../backend/backend';
 import {
   addPluginCommand,
   removePluginCommands,
@@ -189,7 +184,7 @@ export async function loadPlugin(
   // Read the plugin's entry file
   let code: string;
   try {
-    code = await readPluginFile(meta.id, meta.main);
+    code = await getBackend().readPluginFile(meta.id, meta.main);
   } catch (e) {
     throw new Error(`Failed to read plugin '${meta.id}' entry file '${meta.main}': ${e}`);
   }
@@ -253,16 +248,16 @@ export async function loadPlugin(
             let result: unknown;
             switch (method) {
               case 'tasks.list':
-                result = await listTasks(groupId);
+                result = await getBackend().bttaskList(groupId);
                 break;
               case 'tasks.comments':
-                result = await getTaskComments(args.taskId);
+                result = await getBackend().bttaskComments(args.taskId);
                 break;
               case 'messages.inbox':
-                result = await getUnreadMessages(agentId);
+                result = await getBackend().btmsgUnreadMessages(agentId);
                 break;
               case 'messages.channels':
-                result = await getChannels(groupId);
+                result = await getBackend().btmsgGetChannels(groupId);
                 break;
               default:
                 throw new Error(`Unknown RPC method: ${method}`);

src/lib/settings/categories/SecuritySettings.svelte

@@ -1,7 +1,14 @@
 <script lang="ts">
   import { onMount } from 'svelte';
   import { getSetting, setSetting } from '../../stores/settings-store.svelte';
-  import { storeSecret, getSecret, deleteSecret, listSecrets, hasKeyring, knownSecretKeys, SECRET_KEY_LABELS } from '../../adapters/secrets-bridge';
+  import { getBackend } from '../../backend/backend';
+  const SECRET_KEY_LABELS: Record<string, string> = {
+    anthropic_api_key: 'Anthropic API Key',
+    openai_api_key: 'OpenAI API Key',
+    openrouter_api_key: 'OpenRouter API Key',
+    github_token: 'GitHub Token',
+    relay_token: 'Relay Token',
+  };
   import { handleError, handleInfraError } from '../../utils/handle-error';
 
   let keyringAvailable = $state(false);
@@ -25,8 +32,8 @@
 
   onMount(async () => {
     try {
-      keyringAvailable = await hasKeyring();
-      if (keyringAvailable) { storedKeys = await listSecrets(); knownKeys = await knownSecretKeys(); }
+      keyringAvailable = await getBackend().hasKeyring();
+      if (keyringAvailable) { storedKeys = await getBackend().listSecrets(); knownKeys = await getBackend().knownSecretKeys(); }
     } catch (e) {
       // Keyring unavailable is expected on some systems — set state explicitly
       handleInfraError(e, 'settings.keyring.init');
@@ -52,18 +59,18 @@
 
   async function handleRevealSecret(key: string) {
     if (revealedKey === key) { revealedKey = null; revealedValue = ''; return; }
-    try { const val = await getSecret(key); revealedKey = key; revealedValue = val ?? ''; }
+    try { const val = await getBackend().getSecret(key); revealedKey = key; revealedValue = val ?? ''; }
     catch (e) { handleError(e, `settings.secrets.reveal.${key}`, 'reveal the secret'); }
   }
   async function handleSaveSecret() {
     if (!newSecretKey || !newSecretValue) return;
     secretsSaving = true;
-    try { await storeSecret(newSecretKey, newSecretValue); storedKeys = await listSecrets(); newSecretKey = ''; newSecretValue = ''; revealedKey = null; revealedValue = ''; }
+    try { await getBackend().storeSecret(newSecretKey, newSecretValue); storedKeys = await getBackend().listSecrets(); newSecretKey = ''; newSecretValue = ''; revealedKey = null; revealedValue = ''; }
     catch (e) { handleError(e, 'settings.secrets.store', 'store the secret'); }
     finally { secretsSaving = false; }
   }
   async function handleDeleteSecret(key: string) {
-    try { await deleteSecret(key); storedKeys = await listSecrets(); if (revealedKey === key) { revealedKey = null; revealedValue = ''; } }
+    try { await getBackend().deleteSecret(key); storedKeys = await getBackend().listSecrets(); if (revealedKey === key) { revealedKey = null; revealedValue = ''; } }
     catch (e) { handleError(e, `settings.secrets.delete.${key}`, 'delete the secret'); }
   }
   function addBranchPolicy() {

src/lib/stores/anchors.svelte.ts

@@ -3,12 +3,7 @@
 
 import type { SessionAnchor, AnchorType, AnchorBudgetScale, SessionAnchorRecord } from '../types/anchors';
 import { DEFAULT_ANCHOR_SETTINGS, ANCHOR_BUDGET_SCALE_MAP } from '../types/anchors';
-import {
-  saveSessionAnchors,
-  loadSessionAnchors,
-  deleteSessionAnchor,
-  updateAnchorType as updateAnchorTypeBridge,
-} from '../adapters/anchors-bridge';
+import { getBackend } from '../backend/backend';
 import { handleInfraError } from '../utils/handle-error';
 
 // Per-project anchor state
@@ -61,7 +56,7 @@ export async function addAnchors(projectId: string, anchors: SessionAnchor[]): P
   }));
 
   try {
-    await saveSessionAnchors(records);
+    await getBackend().saveSessionAnchors(records);
   } catch (e) {
     handleInfraError(e, 'anchors.save');
   }
@@ -73,7 +68,7 @@ export async function removeAnchor(projectId: string, anchorId: string): Promise
   projectAnchors.set(projectId, existing.filter(a => a.id !== anchorId));
 
   try {
-    await deleteSessionAnchor(anchorId);
+    await getBackend().deleteSessionAnchor(anchorId);
   } catch (e) {
     handleInfraError(e, 'anchors.delete');
   }
@@ -90,7 +85,7 @@ export async function changeAnchorType(projectId: string, anchorId: string, newT
   projectAnchors.set(projectId, [...existing]);
 
   try {
-    await updateAnchorTypeBridge(anchorId, newType);
+    await getBackend().updateAnchorType(anchorId, newType);
   } catch (e) {
     handleInfraError(e, 'anchors.updateType');
   }
@@ -99,7 +94,7 @@ export async function changeAnchorType(projectId: string, anchorId: string, newT
 /** Load anchors from SQLite for a project */
 export async function loadAnchorsForProject(projectId: string): Promise<void> {
   try {
-    const records = await loadSessionAnchors(projectId);
+    const records = await getBackend().loadSessionAnchors(projectId);
     const anchors: SessionAnchor[] = records.map(r => ({
       id: r.id,
       projectId: r.project_id,

src/lib/stores/layout.svelte.ts

@@ -1,14 +1,5 @@
-import {
-  listSessions,
-  saveSession,
-  deleteSession,
-  updateSessionTitle,
-  touchSession,
-  saveLayout,
-  loadLayout,
-  updateSessionGroup,
-  type PersistedSession,
-} from '../adapters/session-bridge';
+import { getBackend } from '../backend/backend';
+import type { PersistedSession } from '@agor/types';
 import { handleInfraError } from '../utils/handle-error';
 
 export type LayoutPreset = '1-col' | '2-col' | '3-col' | '2x2' | 'master-stack';
@@ -47,11 +38,11 @@ function persistSession(pane: Pane): void {
     created_at: now,
     last_used_at: now,
   };
-  saveSession(session).catch(e => handleInfraError(e, 'layout.persistSession'));
+  getBackend().saveSession(session).catch(e => handleInfraError(e, 'layout.persistSession'));
 }
 
 function persistLayout(): void {
-  saveLayout({
+  getBackend().saveLayout({
     preset: activePreset,
     pane_ids: panes.map(p => p.id),
   }).catch(e => handleInfraError(e, 'layout.persistLayout'));
@@ -85,14 +76,14 @@ export function removePane(id: string): void {
     focusedPaneId = panes.length > 0 ? panes[0].id : null;
   }
   autoPreset();
-  deleteSession(id).catch(e => handleInfraError(e, 'layout.deleteSession'));
+  getBackend().deleteSession(id).catch(e => handleInfraError(e, 'layout.deleteSession'));
   persistLayout();
 }
 
 export function focusPane(id: string): void {
   focusedPaneId = id;
   panes = panes.map(p => ({ ...p, focused: p.id === id }));
-  touchSession(id).catch(e => handleInfraError(e, 'layout.touchSession'));
+  getBackend().touchSession(id).catch(e => handleInfraError(e, 'layout.touchSession'));
 }
 
 export function focusPaneByIndex(index: number): void {
@@ -110,7 +101,7 @@ export function renamePaneTitle(id: string, title: string): void {
   const pane = panes.find(p => p.id === id);
   if (pane) {
     pane.title = title;
-    updateSessionTitle(id, title).catch(e => handleInfraError(e, 'layout.updateTitle'));
+    getBackend().updateSessionTitle(id, title).catch(e => handleInfraError(e, 'layout.updateTitle'));
   }
 }
 
@@ -118,7 +109,7 @@ export function setPaneGroup(id: string, group: string): void {
   const pane = panes.find(p => p.id === id);
   if (pane) {
     pane.group = group || undefined;
-    updateSessionGroup(id, group).catch(e => handleInfraError(e, 'layout.updateGroup'));
+    getBackend().updateSessionGroup(id, group).catch(e => handleInfraError(e, 'layout.updateGroup'));
   }
 }
 
@@ -128,7 +119,8 @@ export async function restoreFromDb(): Promise<void> {
   initialized = true;
 
   try {
-    const [sessions, layout] = await Promise.all([listSessions(), loadLayout()]);
+    const backend = getBackend();
+    const [sessions, layout] = await Promise.all([backend.listSessions(), backend.loadLayout()]);
 
     if (layout.preset) {
       activePreset = layout.preset as LayoutPreset;

src/lib/stores/layout.test.ts

@@ -1,14 +1,17 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 
-// Mock session-bridge before importing the layout store
-vi.mock('../adapters/session-bridge', () => ({
-  listSessions: vi.fn().mockResolvedValue([]),
-  saveSession: vi.fn().mockResolvedValue(undefined),
-  deleteSession: vi.fn().mockResolvedValue(undefined),
-  updateSessionTitle: vi.fn().mockResolvedValue(undefined),
-  touchSession: vi.fn().mockResolvedValue(undefined),
-  saveLayout: vi.fn().mockResolvedValue(undefined),
-  loadLayout: vi.fn().mockResolvedValue({ preset: '1-col', pane_ids: [] }),
+// Mock backend before importing the layout store
+vi.mock('../backend/backend', () => ({
+  getBackend: vi.fn(() => ({
+    listSessions: vi.fn().mockResolvedValue([]),
+    saveSession: vi.fn().mockResolvedValue(undefined),
+    deleteSession: vi.fn().mockResolvedValue(undefined),
+    updateSessionTitle: vi.fn().mockResolvedValue(undefined),
+    touchSession: vi.fn().mockResolvedValue(undefined),
+    updateSessionGroup: vi.fn().mockResolvedValue(undefined),
+    saveLayout: vi.fn().mockResolvedValue(undefined),
+    loadLayout: vi.fn().mockResolvedValue({ preset: '1-col', pane_ids: [] }),
+  })),
 }));
 
 import {

src/lib/stores/machines.svelte.ts

@@ -1,19 +1,7 @@
 // Remote machines store — tracks connection state for multi-machine support
 
-import {
-  listRemoteMachines,
-  addRemoteMachine,
-  removeRemoteMachine,
-  connectRemoteMachine,
-  disconnectRemoteMachine,
-  onRemoteMachineReady,
-  onRemoteMachineDisconnected,
-  onRemoteError,
-  onRemoteMachineReconnecting,
-  onRemoteMachineReconnectReady,
-  type RemoteMachineConfig,
-  type RemoteMachineInfo,
-} from '../adapters/remote-bridge';
+import { getBackend } from '../backend/backend';
+import type { RemoteMachineConfig, RemoteMachineInfo } from '@agor/types';
 import { notify } from './notifications.svelte';
 import { handleInfraError } from '../utils/handle-error';
 
@@ -31,26 +19,27 @@ export function getMachine(id: string): Machine | undefined {
 
 export async function loadMachines(): Promise<void> {
   try {
-    machines = await listRemoteMachines();
+    machines = await getBackend().listRemoteMachines();
   } catch (e) {
     handleInfraError(e, 'machines.load');
   }
 }
 
 export async function addMachine(config: RemoteMachineConfig): Promise<string> {
-  const id = await addRemoteMachine(config);
+  const id = await getBackend().addRemoteMachine(config);
   machines.push({
     id,
     label: config.label,
     url: config.url,
     status: 'disconnected',
     auto_connect: config.auto_connect,
+    spki_pins: config.spki_pins ?? [],
   });
   return id;
 }
 
 export async function removeMachine(id: string): Promise<void> {
-  await removeRemoteMachine(id);
+  await getBackend().removeRemoteMachine(id);
   machines = machines.filter(m => m.id !== id);
 }
 
@@ -58,7 +47,7 @@ export async function connectMachine(id: string): Promise<void> {
   const machine = machines.find(m => m.id === id);
   if (machine) machine.status = 'connecting';
   try {
-    await connectRemoteMachine(id);
+    await getBackend().connectRemoteMachine(id);
     if (machine) machine.status = 'connected';
   } catch (e) {
     if (machine) machine.status = 'error';
@@ -67,7 +56,7 @@ export async function connectMachine(id: string): Promise<void> {
 }
 
 export async function disconnectMachine(id: string): Promise<void> {
-  await disconnectRemoteMachine(id);
+  await getBackend().disconnectRemoteMachine(id);
   const machine = machines.find(m => m.id === id);
   if (machine) machine.status = 'disconnected';
 }
@@ -76,11 +65,12 @@ export async function disconnectMachine(id: string): Promise<void> {
 let unlistenFns: (() => void)[] = [];
 
 // Initialize event listeners for machine status updates
-export async function initMachineListeners(): Promise<void> {
+export function initMachineListeners(): void {
   // Clean up any existing listeners first
   destroyMachineListeners();
+  const backend = getBackend();
 
-  unlistenFns.push(await onRemoteMachineReady((msg) => {
+  unlistenFns.push(backend.onRemoteMachineReady((msg) => {
     const machine = machines.find(m => m.id === msg.machineId);
     if (machine) {
       machine.status = 'connected';
@@ -88,7 +78,7 @@ export async function initMachineListeners(): Promise<void> {
     }
   }));
 
-  unlistenFns.push(await onRemoteMachineDisconnected((msg) => {
+  unlistenFns.push(backend.onRemoteMachineDisconnected((msg) => {
     const machine = machines.find(m => m.id === msg.machineId);
     if (machine) {
       machine.status = 'disconnected';
@@ -96,7 +86,7 @@ export async function initMachineListeners(): Promise<void> {
     }
   }));
 
-  unlistenFns.push(await onRemoteError((msg) => {
+  unlistenFns.push(backend.onRemoteError((msg) => {
     const machine = machines.find(m => m.id === msg.machineId);
     if (machine) {
       machine.status = 'error';
@@ -104,18 +94,18 @@ export async function initMachineListeners(): Promise<void> {
     }
   }));
 
-  unlistenFns.push(await onRemoteMachineReconnecting((msg) => {
+  unlistenFns.push(backend.onRemoteMachineReconnecting((msg) => {
     const machine = machines.find(m => m.id === msg.machineId);
     if (machine) {
       machine.status = 'reconnecting';
-      notify('info', `Reconnecting to ${machine.label} in ${msg.backoffSecs}s…`);
+      notify('info', `Reconnecting to ${machine.label} in ${msg.backoffSecs}s...`);
     }
   }));
 
-  unlistenFns.push(await onRemoteMachineReconnectReady((msg) => {
+  unlistenFns.push(backend.onRemoteMachineReconnectReady((msg) => {
     const machine = machines.find(m => m.id === msg.machineId);
     if (machine) {
-      notify('info', `${machine.label} reachable — reconnecting…`);
+      notify('info', `${machine.label} reachable - reconnecting...`);
       connectMachine(msg.machineId).catch((e) => {
         notify('error', `Auto-reconnect failed for ${machine.label}: ${e}`);
       });

src/lib/stores/notifications.svelte.ts

@@ -1,6 +1,6 @@
 // Notification store — ephemeral toasts + persistent notification history
 
-import { sendDesktopNotification } from '../adapters/notifications-bridge';
+import { getBackend } from '../backend/backend';
 
 // --- Toast types (existing) ---
 
@@ -141,7 +141,7 @@ export function addNotification(
   notify(toastType, `${title}: ${body}`);
 
   // Send OS desktop notification (fire-and-forget)
-  sendDesktopNotification(title, body, notificationUrgency(type));
+  try { getBackend().sendDesktopNotification(title, body, notificationUrgency(type)); } catch { /* backend not ready */ }
 
   return id;
 }

src/lib/stores/plugins.svelte.ts

@@ -3,8 +3,8 @@
  * Uses Svelte 5 runes for reactivity.
  */
 
-import type { PluginMeta } from '../adapters/plugins-bridge';
-import { discoverPlugins } from '../adapters/plugins-bridge';
+import type { PluginMeta } from '@agor/types';
+import { getBackend } from '../backend/backend';
 import { getSetting, setSetting } from './settings-store.svelte';
 import { loadPlugin, unloadPlugin, unloadAllPlugins, getLoadedPlugins } from '../plugins/plugin-host';
 import { handleInfraError } from '../utils/handle-error';
@@ -160,7 +160,7 @@ export async function loadAllPlugins(groupId?: GroupId, agentId?: AgentId): Prom
 
   let discovered: PluginMeta[];
   try {
-    discovered = await discoverPlugins();
+    discovered = await getBackend().discoverPlugins();
   } catch (e) {
     handleInfraError(e, 'plugins.discover');
     pluginEntries = [];

src/lib/stores/wake-scheduler.svelte.ts

@@ -6,9 +6,8 @@ import type { AgentId } from '../types/ids';
 import { evaluateWakeSignals, shouldWake } from '../utils/wake-scorer';
 import { getAllProjectHealth, getHealthAggregates } from './health.svelte';
 import { getAllWorkItems } from './workspace.svelte';
-import { listTasks } from '../adapters/bttask-bridge';
+import { getBackend } from '../backend/backend';
 import { getAgentSession } from './agents.svelte';
-import { logAuditEvent } from '../adapters/audit-bridge';
 import { handleInfraError } from '../utils/handle-error';
 import type { GroupId } from '../types/ids';
 
@@ -210,7 +209,7 @@ async function evaluateAndEmit(reg: ManagerRegistration): Promise<void> {
   // Fetch task summary (best-effort)
   let taskSummary: WakeTaskSummary | undefined;
   try {
-    const tasks = await listTasks(reg.groupId);
+    const tasks = await getBackend().bttaskList(reg.groupId);
     taskSummary = {
       total: tasks.length,
       todo: tasks.filter(t => t.status === 'todo').length,
@@ -262,7 +261,7 @@ async function evaluateAndEmit(reg: ManagerRegistration): Promise<void> {
   });
 
   // Audit: log wake event
-  logAuditEvent(
+  getBackend().logAuditEvent(
     reg.agentId,
     'wake_event',
     `Auto-wake triggered (strategy=${reg.strategy}, mode=${mode}, score=${evaluation.totalScore.toFixed(2)})`,

src/lib/stores/workspace.svelte.ts

@@ -1,4 +1,4 @@
-import { loadGroups, saveGroups, getCliGroup } from '../adapters/groups-bridge';
+import { getBackend } from '../backend/backend';
 import { handleInfraError } from '../utils/handle-error';
 import type { GroupsFile, GroupConfig, ProjectConfig, GroupAgentConfig } from '../types/groups';
 import { agentToProject } from '../types/groups';
@@ -7,7 +7,6 @@ import { clearHealthTracking } from '../stores/health.svelte';
 import { clearAllConflicts } from '../stores/conflicts.svelte';
 import { clearWakeScheduler } from '../stores/wake-scheduler.svelte';
 import { waitForPendingPersistence } from '../agent-dispatcher';
-import { registerAgents } from '../adapters/btmsg-bridge';
 
 export type WorkspaceTab = 'sessions' | 'docs' | 'context' | 'settings' | 'comms';
 
@@ -201,7 +200,7 @@ export async function switchGroup(groupId: string): Promise<void> {
   // Persist active group
   if (groupsConfig) {
     groupsConfig.activeGroupId = groupId;
-    saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+    getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
   }
 }
 
@@ -225,18 +224,18 @@ export function removeTerminalTab(projectId: string, tabId: string): void {
 
 export async function loadWorkspace(initialGroupId?: string): Promise<void> {
   try {
-    const config = await loadGroups();
+    const config = await getBackend().loadGroups();
     groupsConfig = config;
     projectTerminals = {};
 
     // Register all agents from config into btmsg database
     // (creates agent records, contact permissions, review channels)
-    registerAgents(config).catch(e => handleInfraError(e, 'workspace.registerAgents'));
+    getBackend().btmsgRegisterAgents(config).catch(e => handleInfraError(e, 'workspace.registerAgents'));
 
     // CLI --group flag takes priority, then explicit param, then persisted
     let cliGroup: string | null = null;
     if (!initialGroupId) {
-      cliGroup = await getCliGroup();
+      cliGroup = await getBackend().getCliGroup();
     }
     const targetId = initialGroupId || cliGroup || config.activeGroupId;
     // Match by ID or by name (CLI users may pass name)
@@ -263,9 +262,9 @@ export async function loadWorkspace(initialGroupId?: string): Promise<void> {
 
 export async function saveWorkspace(): Promise<void> {
   if (!groupsConfig) return;
-  await saveGroups(groupsConfig);
+  await getBackend().saveGroups(groupsConfig);
   // Re-register agents after config changes (new agents, permission updates)
-  registerAgents(groupsConfig).catch(e => handleInfraError(e, 'workspace.registerAgents'));
+  getBackend().btmsgRegisterAgents(groupsConfig).catch(e => handleInfraError(e, 'workspace.registerAgents'));
 }
 
 // --- Group/project mutation ---
@@ -276,7 +275,7 @@ export function addGroup(group: GroupConfig): void {
     ...groupsConfig,
     groups: [...groupsConfig.groups, group],
   };
-  saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+  getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
 }
 
 export function removeGroup(groupId: string): void {
@@ -289,7 +288,7 @@ export function removeGroup(groupId: string): void {
     activeGroupId = groupsConfig.groups[0]?.id ?? '';
     activeProjectId = null;
   }
-  saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+  getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
 }
 
 export function updateProject(groupId: string, projectId: string, updates: Partial<ProjectConfig>): void {
@@ -307,7 +306,7 @@ export function updateProject(groupId: string, projectId: string, updates: Parti
       };
     }),
   };
-  saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+  getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
 }
 
 export function addProject(groupId: string, project: ProjectConfig): void {
@@ -321,7 +320,7 @@ export function addProject(groupId: string, project: ProjectConfig): void {
       return { ...g, projects: [...g.projects, project] };
     }),
   };
-  saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+  getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
 }
 
 export function removeProject(groupId: string, projectId: string): void {
@@ -336,7 +335,7 @@ export function removeProject(groupId: string, projectId: string): void {
   if (activeProjectId === projectId) {
     activeProjectId = null;
   }
-  saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+  getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
 }
 
 export function updateAgent(groupId: string, agentId: string, updates: Partial<GroupAgentConfig>): void {
@@ -354,5 +353,5 @@ export function updateAgent(groupId: string, agentId: string, updates: Partial<G
       };
     }),
   };
-  saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
+  getBackend().saveGroups(groupsConfig).catch(e => handleInfraError(e, 'workspace.saveGroups'));
 }

src/lib/stores/workspace.test.ts

@@ -38,10 +38,15 @@ vi.mock('../agent-dispatcher', () => ({
   waitForPendingPersistence: vi.fn().mockResolvedValue(undefined),
 }));
 
-vi.mock('../adapters/groups-bridge', () => ({
+const mockBackend = {
   loadGroups: vi.fn().mockImplementation(() => Promise.resolve(mockGroupsData())),
   saveGroups: vi.fn().mockResolvedValue(undefined),
   getCliGroup: vi.fn().mockResolvedValue(null),
+  btmsgRegisterAgents: vi.fn().mockResolvedValue(undefined),
+};
+
+vi.mock('../backend/backend', () => ({
+  getBackend: vi.fn(() => mockBackend),
 }));
 
 import {
@@ -66,7 +71,7 @@ import {
   removeProject,
 } from './workspace.svelte';
 
-import { saveGroups, getCliGroup } from '../adapters/groups-bridge';
+const { saveGroups, getCliGroup } = mockBackend;
 
 beforeEach(async () => {
   vi.clearAllMocks();

src/lib/utils/auto-anchoring.ts

@@ -7,7 +7,7 @@ import type { SessionAnchor } from '../types/anchors';
 import { getAnchorSettings, addAnchors } from '../stores/anchors.svelte';
 import { selectAutoAnchors, serializeAnchorsForInjection } from '../utils/anchor-serializer';
 import { getEnabledProjects } from '../stores/workspace.svelte';
-import { tel } from '../adapters/telemetry-bridge';
+import { tel } from './telemetry';
 import { notify } from '../stores/notifications.svelte';
 
 /** Auto-anchor first N turns on first compaction event for a project */

src/lib/utils/global-error-handler.ts

@@ -1,7 +1,7 @@
 import { extractErrorMessage } from './extract-error-message';
 import { classifyError } from './error-classifier';
 import { notify } from '../stores/notifications.svelte';
-import { tel } from '../adapters/telemetry-bridge';
+import { tel } from './telemetry';
 
 let initialized = false;
 

src/lib/utils/handle-error.ts

@@ -6,7 +6,7 @@
 import { extractErrorMessage } from './extract-error-message';
 import { classifyError, type ClassifiedError } from './error-classifier';
 import { notify } from '../stores/notifications.svelte';
-import { tel } from '../adapters/telemetry-bridge';
+import { tel } from './telemetry';
 
 /** User-facing error handler. Logs to telemetry AND shows a toast. */
 export function handleError(

src/lib/utils/session-persistence.ts

@@ -4,12 +4,8 @@
 import type { SessionId as SessionIdType, ProjectId as ProjectIdType } from '../types/ids';
 import type { ProviderId } from '../providers/types';
 import { getAgentSession } from '../stores/agents.svelte';
-import {
-  saveProjectAgentState,
-  saveAgentMessages,
-  saveSessionMetric,
-  type AgentMessageRecord,
-} from '../adapters/groups-bridge';
+import { getBackend } from '../backend/backend';
+import type { AgentMessageRecord } from '@agor/types';
 import { handleInfraError } from './handle-error';
 
 // Map sessionId -> projectId for persistence routing
@@ -58,8 +54,9 @@ export async function persistSessionForProject(sessionId: SessionIdType): Promis
 
   pendingPersistCount++;
   try {
+    const backend = getBackend();
     // Save agent state
-    await saveProjectAgentState({
+    await backend.saveProjectAgentState({
       project_id: projectId,
       last_session_id: sessionId,
       sdk_session_id: session.sdkSessionId ?? null,
@@ -85,13 +82,13 @@ export async function persistSessionForProject(sessionId: SessionIdType): Promis
     }));
 
     if (records.length > 0) {
-      await saveAgentMessages(sessionId, projectId, session.sdkSessionId, records);
+      await backend.saveAgentMessages(sessionId, projectId, session.sdkSessionId, records);
     }
 
     // Persist session metric for historical tracking
     const toolCallCount = session.messages.filter(m => m.type === 'tool_call').length;
     const startTime = sessionStartTimes.get(sessionId) ?? Math.floor(Date.now() / 1000);
-    await saveSessionMetric({
+    await backend.saveSessionMetric({
       project_id: projectId,
       session_id: sessionId,
       start_time: Math.floor(startTime / 1000),

src/lib/utils/telemetry.ts

@@ -0,0 +1,23 @@
+// Telemetry utility — routes frontend events to backend via BackendAdapter
+// Replaces telemetry-bridge.ts (which imported Tauri invoke directly)
+
+import { getBackend } from '../backend/backend';
+
+/** Convenience wrappers for structured logging */
+export const tel = {
+  error: (msg: string, ctx?: Record<string, unknown>) => {
+    try { getBackend().telemetryLog('error', msg, ctx); } catch { /* backend not ready */ }
+  },
+  warn: (msg: string, ctx?: Record<string, unknown>) => {
+    try { getBackend().telemetryLog('warn', msg, ctx); } catch { /* backend not ready */ }
+  },
+  info: (msg: string, ctx?: Record<string, unknown>) => {
+    try { getBackend().telemetryLog('info', msg, ctx); } catch { /* backend not ready */ }
+  },
+  debug: (msg: string, ctx?: Record<string, unknown>) => {
+    try { getBackend().telemetryLog('debug', msg, ctx); } catch { /* backend not ready */ }
+  },
+  trace: (msg: string, ctx?: Record<string, unknown>) => {
+    try { getBackend().telemetryLog('trace', msg, ctx); } catch { /* backend not ready */ }
+  },
+};