feat: Agent Orchestrator — multi-project agent dashboard

Tauri + Svelte 5 + Rust application for orchestrating multiple AI coding agents.
Includes Claude, Aider, Codex, and Ollama provider support, multi-agent
communication (btmsg/bttask), session anchors, plugin sandbox, FTS5 search,
Landlock sandboxing, and 507 vitest + 110 cargo tests.

src/lib/providers/aider.ts

@@ -0,0 +1,32 @@
+// Aider Provider — metadata and capabilities for Aider (OpenRouter / multi-model agent)
+
+import type { ProviderMeta } from './types';
+
+export const AIDER_PROVIDER: ProviderMeta = {
+  id: 'aider',
+  name: 'Aider',
+  description: 'Aider AI coding agent — supports OpenRouter, OpenAI, Anthropic and local models',
+  capabilities: {
+    hasProfiles: false,
+    hasSkills: false,
+    hasModelSelection: true,
+    hasSandbox: false,
+    supportsSubagents: false,
+    supportsCost: false,
+    supportsResume: false,
+  },
+  sidecarRunner: 'aider-runner.mjs',
+  defaultModel: 'openrouter/anthropic/claude-sonnet-4',
+  models: [
+    { id: 'openrouter/anthropic/claude-sonnet-4', label: 'Claude Sonnet 4 (OpenRouter)' },
+    { id: 'openrouter/anthropic/claude-haiku-4', label: 'Claude Haiku 4 (OpenRouter)' },
+    { id: 'openrouter/openai/gpt-4.1', label: 'GPT-4.1 (OpenRouter)' },
+    { id: 'openrouter/openai/o3', label: 'o3 (OpenRouter)' },
+    { id: 'openrouter/google/gemini-2.5-pro', label: 'Gemini 2.5 Pro (OpenRouter)' },
+    { id: 'openrouter/deepseek/deepseek-r1', label: 'DeepSeek R1 (OpenRouter)' },
+    { id: 'openrouter/meta-llama/llama-4-maverick', label: 'Llama 4 Maverick (OpenRouter)' },
+    { id: 'anthropic/claude-sonnet-4-5-20250514', label: 'Claude Sonnet 4.5 (direct)' },
+    { id: 'o3', label: 'o3 (OpenAI direct)' },
+    { id: 'ollama/qwen3:8b', label: 'Qwen3 8B (Ollama)' },
+  ],
+};

src/lib/providers/claude.ts

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+// Claude Provider — metadata and capabilities for Claude Code
+
+import type { ProviderMeta } from './types';
+
+export const CLAUDE_PROVIDER: ProviderMeta = {
+  id: 'claude',
+  name: 'Claude Code',
+  description: 'Anthropic Claude Code agent via SDK',
+  capabilities: {
+    hasProfiles: true,
+    hasSkills: true,
+    hasModelSelection: true,
+    hasSandbox: false,
+    supportsSubagents: true,
+    supportsCost: true,
+    supportsResume: true,
+  },
+  sidecarRunner: 'claude-runner.mjs',
+  defaultModel: 'claude-opus-4-6',
+  models: [
+    { id: 'claude-opus-4-6', label: 'Opus 4.6' },
+    { id: 'claude-sonnet-4-6', label: 'Sonnet 4.6' },
+    { id: 'claude-haiku-4-5-20251001', label: 'Haiku 4.5' },
+  ],
+};

src/lib/providers/codex.ts

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+// Codex Provider — metadata and capabilities for OpenAI Codex CLI
+
+import type { ProviderMeta } from './types';
+
+export const CODEX_PROVIDER: ProviderMeta = {
+  id: 'codex',
+  name: 'Codex CLI',
+  description: 'OpenAI Codex CLI agent via SDK',
+  capabilities: {
+    hasProfiles: false,
+    hasSkills: false,
+    hasModelSelection: true,
+    hasSandbox: true,
+    supportsSubagents: false,
+    supportsCost: false,
+    supportsResume: true,
+  },
+  sidecarRunner: 'codex-runner.mjs',
+  defaultModel: 'gpt-5.4',
+  models: [
+    { id: 'gpt-5.4', label: 'GPT-5.4' },
+    { id: 'o3', label: 'o3' },
+    { id: 'o4-mini', label: 'o4-mini' },
+  ],
+};

src/lib/providers/ollama.ts

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+// Ollama Provider — metadata and capabilities for local Ollama models
+
+import type { ProviderMeta } from './types';
+
+export const OLLAMA_PROVIDER: ProviderMeta = {
+  id: 'ollama',
+  name: 'Ollama',
+  description: 'Local Ollama models via REST API',
+  capabilities: {
+    hasProfiles: false,
+    hasSkills: false,
+    hasModelSelection: true,
+    hasSandbox: false,
+    supportsSubagents: false,
+    supportsCost: false,
+    supportsResume: false,
+  },
+  sidecarRunner: 'ollama-runner.mjs',
+  defaultModel: 'qwen3:8b',
+  models: [
+    { id: 'qwen3:8b', label: 'Qwen3 8B' },
+    { id: 'qwen3:32b', label: 'Qwen3 32B' },
+    { id: 'llama3.3:70b', label: 'Llama 3.3 70B' },
+    { id: 'deepseek-r1:14b', label: 'DeepSeek R1 14B' },
+    { id: 'codellama:13b', label: 'Code Llama 13B' },
+  ],
+};

src/lib/providers/registry.svelte.ts

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+// Provider Registry — singleton registry of available providers (Svelte 5 runes)
+
+import type { ProviderId, ProviderMeta } from './types';
+
+const providers = $state(new Map<ProviderId, ProviderMeta>());
+
+export function registerProvider(meta: ProviderMeta): void {
+  providers.set(meta.id, meta);
+}
+
+export function getProvider(id: ProviderId): ProviderMeta | undefined {
+  return providers.get(id);
+}
+
+export function getProviders(): ProviderMeta[] {
+  return Array.from(providers.values());
+}
+
+export function getDefaultProviderId(): ProviderId {
+  return 'claude';
+}
+
+/** Check if a specific provider is registered */
+export function hasProvider(id: ProviderId): boolean {
+  return providers.has(id);
+}

src/lib/providers/types.ts

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+// Provider abstraction types — defines the interface for multi-provider agent support
+
+export type ProviderId = 'claude' | 'codex' | 'ollama' | 'aider';
+
+/** What a provider can do — UI gates features on these flags */
+export interface ProviderCapabilities {
+  hasProfiles: boolean;
+  hasSkills: boolean;
+  hasModelSelection: boolean;
+  hasSandbox: boolean;
+  supportsSubagents: boolean;
+  supportsCost: boolean;
+  supportsResume: boolean;
+}
+
+/** Static metadata about a provider */
+export interface ProviderMeta {
+  id: ProviderId;
+  name: string;
+  description: string;
+  capabilities: ProviderCapabilities;
+  /** Name of the sidecar runner file (e.g. 'claude-runner.mjs') */
+  sidecarRunner: string;
+  /** Default model identifier, if applicable */
+  defaultModel?: string;
+  /** Available model presets for dropdown selection */
+  models?: { id: string; label: string }[];
+}
+
+/** Per-provider configuration (stored in settings) */
+export interface ProviderSettings {
+  enabled: boolean;
+  defaultModel?: string;
+  /** Provider-specific config blob */
+  config: Record<string, unknown>;
+}