diff --git a/.claude/CLAUDE.md b/.claude/CLAUDE.md
index 7e74b24..18201c2 100644
--- a/.claude/CLAUDE.md
+++ b/.claude/CLAUDE.md
@@ -48,7 +48,8 @@
 - RemoteManager (src-tauri/src/remote.rs) manages WebSocket client connections to bterminal-relay instances. 12 Tauri commands prefixed with `remote_`.
 - remote-bridge.ts adapter wraps remote machine management IPC. machines.svelte.ts store tracks remote machine state.
 - Pane.remoteMachineId?: string routes operations through RemoteManager instead of local managers. Bridge adapters (pty-bridge, agent-bridge) check this field.
-- bterminal-relay binary (v2/bterminal-relay/) is a standalone WebSocket server with token auth, rate limiting, and per-connection isolated managers.
+- bterminal-relay binary (v2/bterminal-relay/) is a standalone WebSocket server with token auth, rate limiting, and per-connection isolated managers. Commands return structured responses (pty_created, pong, error) with commandId for correlation via send_error() helper.
+- RemoteManager reconnection: exponential backoff (1s-30s cap) on disconnect, attempt_ws_connect() probe, emits remote-machine-reconnecting and remote-machine-reconnect-ready events.
 
 ## Memora Tags
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cac75cb..469b88d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Added
+- Exponential backoff reconnection in RemoteManager: on disconnect, spawns async task with 1s/2s/4s/8s/16s/30s-cap backoff, uses attempt_ws_connect() probe (5s timeout), emits remote-machine-reconnecting and remote-machine-reconnect-ready events
+- Relay command response propagation: bterminal-relay now sends structured responses (pty_created, pong, error) back to client via shared event channel with commandId correlation
+- send_error() helper in bterminal-relay for consistent error reporting across all command handlers
+- PTY creation confirmation flow: pty_create command returns pty_created event with session ID and commandId; RemoteManager emits remote-pty-created Tauri event
 - bterminal-core shared crate with EventSink trait: extracted PtyManager and SidecarManager into reusable crate at v2/bterminal-core/, EventSink trait abstracts event emission for both Tauri and WebSocket contexts
 - bterminal-relay WebSocket server binary: standalone Rust binary at v2/bterminal-relay/ with token auth (--port, --token, --insecure CLI flags), rate limiting (10 attempts, 5min lockout), per-connection isolated PTY + sidecar managers
 - RemoteManager for multi-machine WebSocket connections: v2/src-tauri/src/remote.rs manages WebSocket client connections to relay instances, 12 new Tauri commands for remote operations, heartbeat ping every 15s
@@ -44,6 +48,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - tempfile dev dependency for Rust test isolation
 
 ### Changed
+- bterminal-relay command handlers refactored: all error paths now use send_error() helper instead of log::error!() only; pong response sent via event channel instead of no-op
+- RemoteManager disconnect handler: scoped mutex release before event emission to prevent deadlocks; spawns reconnection task
 - PtyManager and SidecarManager extracted from src-tauri to bterminal-core shared crate (src-tauri now has thin re-export wrappers)
 - Cargo workspace structure at v2/ level: members = [src-tauri, bterminal-core, bterminal-relay], Cargo.lock moved from src-tauri/ to workspace root
 - agent-bridge.ts and pty-bridge.ts extended with remote routing (check remoteMachineId, route to remote_* commands)
diff --git a/CLAUDE.md b/CLAUDE.md
index df80f96..c3e8f3e 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -2,7 +2,7 @@
 
 ## Project Overview
 
-Terminal emulator with SSH and Claude Code session management. v1 (GTK3+VTE Python) is production-stable. v2 redesign (Tauri 2.x + Svelte 5 + Claude Agent SDK) Phases 1-7 complete. Packaging: .deb + AppImage via GitHub Actions CI.
+Terminal emulator with SSH and Claude Code session management. v1 (GTK3+VTE Python) is production-stable. v2 redesign (Tauri 2.x + Svelte 5 + Claude Agent SDK) Phases 1-7 + multi-machine (A-D) complete. Packaging: .deb + AppImage via GitHub Actions CI.
 
 - **Repository:** github.com/DexterFromLab/BTerminal
 - **License:** MIT
@@ -22,13 +22,18 @@ Terminal emulator with SSH and Claude Code session management. v1 (GTK3+VTE Pyth
 | `install-v2.sh` | v2 build-from-source installer (Node.js 20+, Rust 1.77+, system libs) |
 | `.github/workflows/release.yml` | CI: builds .deb + AppImage on v* tags, uploads to GitHub Releases |
 | `docs/task_plan.md` | v2 architecture decisions and strategies |
-| `docs/phases.md` | v2 implementation phases (1-7) |
+| `docs/phases.md` | v2 implementation phases (1-7 + multi-machine A-D) |
 | `docs/findings.md` | v2 research findings |
 | `docs/progress.md` | Session progress log |
-| `docs/multi-machine.md` | Multi-machine architecture (WebSocket relay, 4-phase plan) |
-| `v2/src-tauri/src/pty.rs` | PTY backend (portable-pty, PtyManager) |
-| `v2/src-tauri/src/lib.rs` | Tauri commands (pty + agent + session + file + settings) |
-| `v2/src-tauri/src/sidecar.rs` | SidecarManager (Deno-first + Node.js fallback, SidecarCommand, NDJSON) |
+| `docs/multi-machine.md` | Multi-machine architecture (implemented, Phases A-D) |
+| `v2/Cargo.toml` | Cargo workspace root (members: src-tauri, bterminal-core, bterminal-relay) |
+| `v2/bterminal-core/` | Shared crate: EventSink trait, PtyManager, SidecarManager |
+| `v2/bterminal-relay/` | Standalone relay binary (WebSocket server, token auth, CLI) |
+| `v2/src-tauri/src/pty.rs` | PTY backend (thin re-export from bterminal-core) |
+| `v2/src-tauri/src/lib.rs` | Tauri commands (pty + agent + session + file + settings + 12 remote) |
+| `v2/src-tauri/src/sidecar.rs` | SidecarManager (thin re-export from bterminal-core) |
+| `v2/src-tauri/src/event_sink.rs` | TauriEventSink (implements EventSink for AppHandle) |
+| `v2/src-tauri/src/remote.rs` | RemoteManager (WebSocket client connections to relays) |
 | `v2/src-tauri/src/session.rs` | SessionDb (rusqlite, sessions + layout + settings + ssh_sessions) |
 | `v2/src-tauri/src/watcher.rs` | FileWatcherManager (notify crate, file change events) |
 | `v2/src-tauri/src/ctx.rs` | CtxDb (read-only access to ~/.claude-context/context.db) |
@@ -44,6 +49,8 @@ Terminal emulator with SSH and Claude Code session management. v1 (GTK3+VTE Pyth
 | `v2/src/lib/adapters/settings-bridge.ts` | Settings IPC wrapper (get/set/list) |
 | `v2/src/lib/adapters/ctx-bridge.ts` | ctx database IPC wrapper |
 | `v2/src/lib/adapters/ssh-bridge.ts` | SSH session IPC wrapper |
+| `v2/src/lib/adapters/remote-bridge.ts` | Remote machine management IPC wrapper |
+| `v2/src/lib/stores/machines.svelte.ts` | Remote machine state store (Svelte 5 runes) |
 | `v2/src/lib/utils/agent-tree.ts` | Agent tree builder (hierarchy from messages) |
 | `v2/src/lib/utils/highlight.ts` | Shiki syntax highlighter (lazy singleton, 13 languages) |
 | `v2/src/lib/utils/detach.ts` | Detached pane mode (pop-out windows via URL params) |
@@ -75,16 +82,20 @@ Terminal emulator with SSH and Claude Code session management. v1 (GTK3+VTE Pyth
 - Context DB: `~/.claude-context/context.db`
 - Theme: Catppuccin Mocha
 
-## v2 Stack (Phases 1-7 complete, branch: v2-mission-control)
+## v2 Stack (Phases 1-7 + Multi-Machine A-D complete, branch: v2-mission-control)
 
 - Tauri 2.x (Rust backend) + Svelte 5 (frontend)
+- Cargo workspace: bterminal-core (shared), bterminal-relay (remote binary), src-tauri (Tauri app)
 - xterm.js with Canvas addon (no WebGL on WebKit2GTK)
 - Agent sessions via `claude` CLI subprocess with `--output-format stream-json`
 - Sidecar manages claude processes (Deno-first + Node.js fallback, stdio NDJSON to Rust)
-- portable-pty for terminal management
+- portable-pty for terminal management (in bterminal-core)
+- Multi-machine: bterminal-relay WebSocket server + RemoteManager WebSocket client
 - SQLite session persistence (rusqlite, WAL mode) + layout restore on startup
 - File watcher (notify crate) for live markdown viewer
-- Rust deps: tauri, portable-pty, rusqlite (bundled), dirs, notify, uuid, serde, tokio, tauri-plugin-updater
+- Rust deps (src-tauri): tauri, bterminal-core (path), rusqlite (bundled), dirs, notify, serde, tokio, tokio-tungstenite, futures-util, tauri-plugin-updater
+- Rust deps (bterminal-core): portable-pty, uuid, serde, serde_json, log
+- Rust deps (bterminal-relay): bterminal-core, tokio, tokio-tungstenite, clap, env_logger, futures-util
 - npm deps: @xterm/xterm, @xterm/addon-canvas, @xterm/addon-fit, @tauri-apps/api, @tauri-apps/plugin-updater, marked, shiki, vitest (dev)
 - Source: `v2/` directory
 
diff --git a/README.md b/README.md
index 378c870..9de43ff 100644
--- a/README.md
+++ b/README.md
@@ -136,7 +136,7 @@ cd v2 && cargo build --release -p bterminal-relay
 ./target/release/bterminal-relay --port 9750 --token <secret> --insecure
 ```
 
-Add remote machines in BTerminal Settings > Remote Machines (label, URL, token). Remote panes auto-group by machine label in the sidebar.
+Add remote machines in BTerminal Settings > Remote Machines (label, URL, token). Remote panes auto-group by machine label in the sidebar. Connections automatically reconnect with exponential backoff (1s-30s cap) on disconnect.
 
 See [docs/multi-machine.md](docs/multi-machine.md) for full architecture details.
 
@@ -145,10 +145,10 @@ See [docs/multi-machine.md](docs/multi-machine.md) for full architecture details
 | Document | Description |
 |----------|-------------|
 | [docs/task_plan.md](docs/task_plan.md) | v2 architecture decisions, error handling, testing strategy |
-| [docs/phases.md](docs/phases.md) | v2 implementation phases (1-7) with checklists |
+| [docs/phases.md](docs/phases.md) | v2 implementation phases (1-7 + multi-machine A-D) with checklists |
 | [docs/findings.md](docs/findings.md) | Research findings (Agent SDK, Tauri, xterm.js, performance) |
 | [docs/progress.md](docs/progress.md) | Session-by-session progress log |
-| [docs/multi-machine.md](docs/multi-machine.md) | Multi-machine architecture (WebSocket relay, remote agents) |
+| [docs/multi-machine.md](docs/multi-machine.md) | Multi-machine architecture (implemented, WebSocket relay, reconnection) |
 
 ## License
 
diff --git a/TODO.md b/TODO.md
index 558a234..421d443 100644
--- a/TODO.md
+++ b/TODO.md
@@ -4,26 +4,19 @@
 
 - [ ] **Deno sidecar real-world testing** -- Integrated into sidecar.rs (Deno-first + Node.js fallback). Needs testing with real claude CLI and startup time benchmark vs Node.js.
 - [ ] **E2E testing (Playwright/WebDriver)** -- Scaffold at v2/tests/e2e/README.md. Needs display server to run. Test: open terminal, run command, open agent, verify output.
-- [ ] **Multi-machine reconnection** -- Implement exponential backoff reconnection logic (1s-30s cap) in RemoteManager for dropped WebSocket connections.
 - [ ] **Multi-machine real-world testing** -- Test bterminal-relay with 2 machines (local + 1 remote). Verify PTY + agent operations over WebSocket.
 - [ ] **Multi-machine TLS/certificate pinning** -- Add TLS support to bterminal-relay and certificate pinning in RemoteManager for production security.
 - [ ] **Agent Teams real-world testing** -- Frontend routing implemented (Phase 7). Needs testing with CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1 and real subagent spawning.
 
 ## Completed
 
+- [x] **Multi-machine reconnection** -- Exponential backoff reconnection (1s-30s cap) in RemoteManager, attempt_ws_connect() probe, reconnection events. | Done: 2026-03-06
+- [x] **Relay command response propagation** -- Structured responses (pty_created, pong, error) with commandId correlation, send_error() helper. | Done: 2026-03-06
 - [x] **Multi-machine support (Phases A-D)** -- bterminal-core crate extraction, bterminal-relay WebSocket binary, RemoteManager, frontend integration. | Done: 2026-03-06
-
-- [x] **Set TAURI_SIGNING_PRIVATE_KEY secret** -- Set via `gh secret set` on DexterFromLab/BTerminal. | Done: 2026-03-06
-- [x] **Dispatcher tests for subagent routing** -- 10 new tests covering spawn, dedup, child message routing, init/cost forwarding, fallbacks. Total: 28 dispatcher tests. | Done: 2026-03-06
-- [x] **Subagent cost aggregation** -- `getTotalCost()` recursive helper in agents store, total cost shown in parent pane done-bar when children present. | Done: 2026-03-06
 - [x] **Agent Teams frontend support** -- Subagent pane spawning, parent/child navigation, message routing by parentId, SUBAGENT_TOOL_NAMES detection in dispatcher. | Done: 2026-03-06
+- [x] **Subagent cost aggregation** -- `getTotalCost()` recursive helper in agents store, total cost shown in parent pane done-bar when children present. | Done: 2026-03-06
+- [x] **Dispatcher tests for subagent routing** -- 10 new tests covering spawn, dedup, child message routing, init/cost forwarding, fallbacks. Total: 28 dispatcher tests. | Done: 2026-03-06
 - [x] **Session groups/folders** -- group_name column in sessions table, setPaneGroup in layout store, collapsible group headers in sidebar, right-click to set group. | Done: 2026-03-06
-- [x] **Auto-update signing key** -- Generated minisign keypair, pubkey set in tauri.conf.json. | Done: 2026-03-06
 - [x] **Deno sidecar integration** -- SidecarCommand struct, resolve_sidecar_command() with Deno-first + Node.js fallback, both runners bundled in tauri.conf.json resources. | Done: 2026-03-06
-- [x] **E2E/integration test suite** -- 104 vitest tests (layout 30, agent-bridge 11, agent-dispatcher 18, sdk-messages 25, agent-tree 20) + 29 cargo tests. | Done: 2026-03-06
-- [x] **Copy/paste (Ctrl+Shift+C/V)** -- TerminalPane attachCustomKeyEventHandler, C copies selection, V writes clipboard to PTY. | Done: 2026-03-06
-- [x] **Terminal theme hot-swap** -- onThemeChange callback registry in theme.svelte.ts, TerminalPane subscribes. All open terminals update. | Done: 2026-03-06
-- [x] **Tree node click -> scroll to message** -- handleTreeNodeClick in AgentPane, scrollIntoView smooth. | Done: 2026-03-06
-- [x] **Subtree cost display** -- Yellow cost text below each tree node (subtreeCost util, NODE_H 32->40). | Done: 2026-03-06
-- [x] **Session resume** -- Follow-up prompt in AgentPane, resume_session_id passed to SDK. | Done: 2026-03-06
-- [x] **Pane drag-resize handles** -- Splitter overlays in TilingGrid with mouse drag, 10-90% clamping. | Done: 2026-03-06
+- [x] **E2E/integration test suite** -- 114 vitest tests + 29 cargo tests. | Done: 2026-03-06
+- [x] **Set TAURI_SIGNING_PRIVATE_KEY secret** -- Set via `gh secret set` on DexterFromLab/BTerminal. | Done: 2026-03-06
diff --git a/docs/README.md b/docs/README.md
index 502431a..81afc47 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -17,7 +17,7 @@ Project documentation lives here.
 | Document | Description |
 |----------|-------------|
 | [task_plan.md](task_plan.md) | v2 architecture decisions, error handling, testing strategy |
-| [phases.md](phases.md) | v2 implementation phases (1-7) with checklists |
+| [phases.md](phases.md) | v2 implementation phases (1-7 + multi-machine A-D) with checklists |
 | [findings.md](findings.md) | Research findings (Agent SDK, Tauri, xterm.js, performance) |
 | [progress.md](progress.md) | Session-by-session progress log |
-| [multi-machine.md](multi-machine.md) | Multi-machine support architecture (WebSocket, relay binary) |
+| [multi-machine.md](multi-machine.md) | Multi-machine support architecture (implemented, WebSocket relay, reconnection) |
diff --git a/docs/multi-machine.md b/docs/multi-machine.md
index 1c42128..6f1f77e 100644
--- a/docs/multi-machine.md
+++ b/docs/multi-machine.md
@@ -146,7 +146,7 @@ interface RelayCommand {
 
 // Relay → Controller (events)
 interface RelayEvent {
-  type: 'pty_data' | 'pty_exit'
+  type: 'pty_data' | 'pty_exit' | 'pty_created'
       | 'sidecar_message' | 'sidecar_exited'
       | 'error' | 'pong' | 'ready';
   sessionId?: string;
@@ -181,9 +181,13 @@ Controller                          Relay
     │── reconnect (exp backoff) ─────→│  (1s, 2s, 4s, 8s, max 30s)
 ```
 
-### Reconnection
+### Reconnection (Implemented)
 
-- Controller reconnects with exponential backoff (1s → 30s cap)
+- Controller reconnects with exponential backoff (1s, 2s, 4s, 8s, 16s, 30s cap)
+- Reconnection runs as an async tokio task spawned on disconnect
+- Uses `attempt_ws_connect()` probe: connects with auth header, immediately closes (5s timeout)
+- Emits `remote-machine-reconnecting` event (with backoff duration) and `remote-machine-reconnect-ready` when probe succeeds
+- Cancels if machine is removed or manually reconnected (checks status == "disconnected" && connection == None)
 - On reconnect, relay sends current state snapshot (active sessions, PTY list)
 - Controller reconciles: updates pane states, re-subscribes to streams
 - Active agent sessions continue on relay regardless of controller connection
@@ -260,12 +264,18 @@ Stored in SQLite `settings` table as JSON: `remote_machines` key.
 - Routes RelayCommand to bterminal-core managers, forwards RelayEvent over WebSocket
 - Rate limiting: 10 failed auth attempts triggers 5-minute lockout
 - Per-connection isolated PtyManager + SidecarManager instances
+- Command response propagation: structured responses (pty_created, pong, error) sent back via shared event channel
+- send_error() helper: all command failures emit RelayEvent with commandId + error message
+- PTY creation confirmation: pty_create command returns pty_created event with session ID and commandId for correlation
 
 ### Phase C: Add `RemoteManager` to controller [DONE]
 
 - v2/src-tauri/src/remote.rs — RemoteManager struct with WebSocket client connections
 - 12 Tauri commands: remote_add_machine, remote_remove_machine, remote_connect, remote_disconnect, remote_list_machines, remote_pty_spawn/write/resize/kill, remote_agent_query/stop, remote_sidecar_restart
 - Heartbeat ping every 15s
+- PTY creation event: emits `remote-pty-created` Tauri event with machineId, ptyId, commandId
+- Exponential backoff reconnection on disconnect (1s/2s/4s/8s/16s/30s cap) via `attempt_ws_connect()` probe
+- Reconnection events: `remote-machine-reconnecting`, `remote-machine-reconnect-ready`
 
 ### Phase D: Frontend integration [DONE]
 
@@ -278,7 +288,8 @@ Stored in SQLite `settings` table as JSON: `remote_machines` key.
 
 ### Remaining Work
 
-- [ ] Reconnection logic with exponential backoff (1s-30s cap)
+- [x] Reconnection logic with exponential backoff (1s-30s cap) — implemented in remote.rs
+- [x] Relay command response propagation (pty_created, pong, error events) — implemented in main.rs
 - [ ] Real-world relay testing (2 machines)
 - [ ] TLS/certificate pinning
 
diff --git a/docs/phases.md b/docs/phases.md
index d1f31be..a7054fc 100644
--- a/docs/phases.md
+++ b/docs/phases.md
@@ -271,12 +271,19 @@ Architecture designed in [multi-machine.md](multi-machine.md). Implementation ex
 - [x] Routes RelayCommand to PtyManager/SidecarManager, forwards RelayEvent over WebSocket
 - [x] Rate limiting on auth failures (10 attempts, 5min lockout)
 - [x] Per-connection isolated PTY + sidecar managers
+- [x] Command response propagation: structured responses (pty_created, pong, error) via shared event channel
+- [x] send_error() helper for consistent error reporting with commandId correlation
+- [x] PTY creation confirmation: pty_created event with session ID and commandId
 
 ### Phase C: Add `RemoteManager` to controller [status: complete]
 - [x] New remote.rs module in src-tauri — WebSocket client connections to relay instances
 - [x] Machine lifecycle: add/remove/connect/disconnect
 - [x] 12 new Tauri commands for remote operations
 - [x] Heartbeat ping every 15s
+- [x] PTY creation event: emits remote-pty-created Tauri event with machineId, ptyId, commandId
+- [x] Exponential backoff reconnection on disconnect (1s/2s/4s/8s/16s/30s cap)
+- [x] attempt_ws_connect() probe function (5s timeout, auth header, immediate close)
+- [x] Reconnection events: remote-machine-reconnecting, remote-machine-reconnect-ready
 
 ### Phase D: Frontend integration [status: complete]
 - [x] remote-bridge.ts adapter for machine management + remote events
@@ -287,6 +294,7 @@ Architecture designed in [multi-machine.md](multi-machine.md). Implementation ex
 - [x] Sidebar auto-groups remote panes by machine label
 
 ### Remaining Work
-- [ ] Reconnection logic with exponential backoff
+- [x] Reconnection logic with exponential backoff — implemented in remote.rs
+- [x] Relay command response propagation — implemented in bterminal-relay main.rs
 - [ ] Real-world relay testing (2 machines)
 - [ ] TLS/certificate pinning
diff --git a/docs/progress.md b/docs/progress.md
index d77869d..2a30bda 100644
--- a/docs/progress.md
+++ b/docs/progress.md
@@ -311,8 +311,27 @@ Design: No separate sidecar process per subagent. Parent's sidecar handles all;
 - bterminal-relay: tokio, tokio-tungstenite, clap, env_logger, futures-util
 - src-tauri: tokio-tungstenite, tokio, futures-util, uuid (added for RemoteManager)
 
+### Session: 2026-03-06 (continued) — Relay Hardening & Reconnection
+
+#### Relay Command Response Propagation
+- [x] Shared event channel between EventSink and command response sender (sink_tx clone in bterminal-relay)
+- [x] send_error() helper function: all command failures now emit RelayEvent with commandId + error message instead of just logging
+- [x] ping command: now sends pong response via event channel (was a no-op)
+- [x] pty_create: returns pty_created event with session ID and commandId for correlation
+- [x] All error paths (pty_write, pty_resize, pty_close, agent_query, agent_stop, sidecar_restart) use send_error()
+
+#### RemoteManager Reconnection
+- [x] Exponential backoff reconnection in remote.rs: spawns async tokio task on disconnect
+- [x] Backoff schedule: 1s, 2s, 4s, 8s, 16s, 30s (capped)
+- [x] attempt_ws_connect() probe function: connects with proper WebSocket upgrade + auth header, 5s timeout, immediate close
+- [x] Emits remote-machine-reconnecting (with backoffSecs) and remote-machine-reconnect-ready Tauri events
+- [x] Cancellation: stops if machine removed (not in HashMap) or manually reconnected (status != disconnected)
+- [x] Fixed scoping: disconnection cleanup uses inner block to release mutex before emitting event
+
+#### RemoteManager PTY Creation Confirmation
+- [x] Handles pty_created event type from relay: emits remote-pty-created Tauri event with machineId, ptyId, commandId
+
 ### Next Steps
-- [ ] Reconnection logic with exponential backoff
 - [ ] Real-world relay testing (2 machines)
 - [ ] TLS/certificate pinning for relay connections
 - [ ] Deno sidecar: test with real claude CLI, benchmark startup time vs Node.js
diff --git a/docs/task_plan.md b/docs/task_plan.md
index 134394f..cb8292e 100644
--- a/docs/task_plan.md
+++ b/docs/task_plan.md
@@ -151,7 +151,7 @@ See [phases.md](phases.md) for the full phased implementation plan.
 ## Open Questions
 
 1. **Node.js or Deno for sidecar?** Resolved: Deno-first with Node.js fallback. SidecarCommand struct in sidecar.rs abstracts the choice. Deno preferred (runs TS directly, compiles to single binary). Falls back to Node.js if Deno not in PATH.
-2. **Multi-machine support?** Resolved: Implemented (Phases A-D complete). See [multi-machine.md](multi-machine.md) for architecture. bterminal-core crate extracted, bterminal-relay binary built, RemoteManager + frontend integration done. Remaining: reconnection logic, real-world testing, TLS.
+2. **Multi-machine support?** Resolved: Implemented (Phases A-D complete). See [multi-machine.md](multi-machine.md) for architecture. bterminal-core crate extracted, bterminal-relay binary built, RemoteManager + frontend integration done. Reconnection with exponential backoff implemented. Remaining: real-world testing, TLS.
 3. **Agent Teams integration?** Phase 7 — frontend routing implemented (subagent pane spawning, parent/child navigation). Needs real-world testing with CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1.
 4. **Electron escape hatch threshold?** If Canvas xterm.js proves >50ms latency on target system with 4 panes, switch to Electron. Benchmark in Phase 2.