Replace attempt_ws_connect() with attempt_tcp_probe() in RemoteManager to
avoid allocating per-connection resources (PtyManager, SidecarManager) on
the relay during reconnection probes. Add onRemoteMachineReconnecting and
onRemoteMachineReconnectReady event listeners in remote-bridge.ts. Wire
machines store to auto-reconnect when relay becomes reachable.
New remote.rs module in src-tauri with WebSocket client connections to
bterminal-relay instances. Machine lifecycle: add/remove/connect/
disconnect. 12 new Tauri commands for remote operations. Heartbeat
ping every 15s. lib.rs updated with remote commands and AppState.
Create Cargo workspace at v2/ level with members: src-tauri,
bterminal-core, bterminal-relay. Extract PtyManager and SidecarManager
into shared bterminal-core crate with EventSink trait for abstracting
event emission. TauriEventSink wraps AppHandle. src-tauri pty.rs and
sidecar.rs become thin re-exports. Move Cargo.lock to workspace root.
Add v2/target/ to .gitignore.
Refactor SidecarManager to use SidecarCommand struct abstracting
runtime choice. resolve_sidecar_command() prefers Deno (runs TS
directly, no build step), falls back to Node.js if deno not in PATH.
Both runners bundled in tauri.conf.json resources. Set auto-update
signing pubkey in updater config.
Add group_name column to sessions table with ALTER TABLE migration,
setPaneGroup in layout store, grouped sidebar rendering with Svelte 5
snippets, and right-click to assign group via prompt dialog.
Build-from-source installer (install-v2.sh) with dependency checks for
Node.js 20+, Rust 1.77+, and system libraries. Tauri bundle config for
.deb and AppImage targets. GitHub Actions workflow builds and uploads
release artifacts on version tags. Icons regenerated as RGBA PNGs.
Agent tree visualization (SVG) with horizontal layout and bezier edges.
Global status bar with pane counts, active agents pulse, token/cost totals.
Toast notification system with auto-dismiss and agent dispatcher integration.
Settings dialog with SQLite persistence for shell, cwd, and max panes.
Keyboard shortcuts: Ctrl+W close pane, Ctrl+, open settings.
Phase 3 polish: dispatcher listens for sidecar-exited events and marks
running sessions as error. AgentPane shows "Restart Sidecar" button on
error. Auto-scroll disables when user scrolls >50px from bottom with
"Scroll to bottom" button. Added agent_restart Tauri command.
