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72b67f48e3
* Eliminate spiky terminal lag under load
Terminal output stuttered during heavy output and when the daemon was
busy. Two compounding causes, both confirmed by measurement:
- Every 256KB of output, the daemon dropped pending frames and re-sent a
full cell-grid snapshot (cloned across IPC, stringified to JSON) — a
10MB build did this ~40 times. The snapshot fallback is now gated on
real client backpressure (ws bufferedAmount), so a client that keeps
draining streams continuously and never pays the snapshot tax. This
also removes the periodic GC hitch the churn caused.
- Per-chunk overhead on the shared event loop: one IPC message per pty
chunk, a duplicate input-mode regex scan on the daemon main loop, a
double JSON.stringify per outbound message, and 16KB string realloc
per chunk. Output now coalesces in the worker before IPC (leading-edge
so keystrokes still echo immediately), the duplicate scan is gone, and
the client feeds xterm back-to-back instead of one render tick a frame.
Adds eventLoopDelay percentiles to ws_runtime_metrics for main-loop
stall visibility, plus a reproducible Node benchmark (no port 6767).
Measured: echo p50 7.7ms to 2.3ms; a 2MB burst now streams fully with
zero snapshots; loop-stall spikes 100-173ms to 2ms.
* Guard trace-level check against partial logger stubs
The isLevelEnabled gate added for the emit() perf fix crashed every
session test that injects a hand-rolled logger stub (10 of them omit
isLevelEnabled). Real pino loggers always provide it; optional-chaining
keeps the perf gate intact in production and no-ops on stubs.
* Make recent-output exit-summary test deterministic
The added test self-exited the child immediately after writing 3000
lines, then asserted the newest line was in the exit summary — but the
summary reads the headless xterm buffer, which parses writes
asynchronously, so a loaded CI runner saw a stale buffer (line-2707 not
line-2999). Keep the process alive and poll the parsed buffer until the
final line lands before killing, removing the race.
* Skip ConPTY-fragile worker terminal tests on Windows
The coalescing and input-mode-preamble tests assert byte-contiguous PTY
output and an exact kitty-escape round-trip. Windows ConPTY injects
repaint sequences between writes and normalizes the escape, so both time
out there while passing on Linux/macOS. Gate them with skipIf(win32),
matching the existing terminal-test convention for PTY-sensitive cases.
* Apply terminal barriers immediately when no writes are pending
A barrier op (snapshot/restore/clear) only needs the sentinel-write gate
to wait out plain writes still parsing in xterm's buffer. When none are
ungated — at mount, or right after another barrier — the sentinel cost a
wasted parse cycle, adding latency to the first snapshot/restore on the
hot first-paint path. Track ungated writes with a flag and skip the
sentinel when there's nothing to gate.
* Fix mobile startup saved-host e2e
* Unskip Windows worker terminal coverage
* Tighten worker coalescing assertion
* Reset terminal ungated writes on unmount
* Fix terminal regressions found in adversarial review
Three issues this PR's terminal changes introduced:
- Worker snapshot could duplicate coalesced output. getTerminalState
snapshotted without flushing the worker output coalescer, so a batch
spanning the snapshot point carried a revision past it and the
controller's dedup couldn't drop it — the client saw the bytes twice.
Flush before snapshotting.
- Relay clients lost backpressure protection. The snapshot fallback was
gated on bufferedAmount, which the multiplexed relay socket reports as
absent; that read as 0 ("keeping up") so a slow relay client never
caught up via a snapshot. Distinguish "no signal" (null) from 0 and
keep the unconditional byte-threshold fallback for signal-less
transports, preserving the pre-change relay behavior.
- Recent-output buffer was no longer a hard cap. A single chunk larger
than the limit was retained whole; slice its tail.
Documents the live-restore preamble gap (unreachable: no client sends
restore mode "live").
* Skip input-mode preamble test on Windows ConPTY
CI confirmed Windows ConPTY normalizes away the kitty keyboard escape
the child writes, so it never reaches the worker's input-mode tracker
and the preamble stays empty — the test times out. ConPTY can't exercise
this contract; the coalescing test (file-gated, line-oriented) stays on
all platforms, only the preamble assertion is gated to Linux/macOS.
Voice Assistant
A voice-controlled terminal assistant that runs as a single local service.
Quick Start
# Install dependencies
npm install
# Copy environment variables
cp .env.example .env
# Edit .env and add your API keys (OpenAI, Deepgram)
# Run development servers
npm run dev
# Open browser to http://localhost:5173
Architecture
- Express Server (port 3000) - Serves API and built UI in production
- Vite Dev Server (port 5173) - Hot-reload React UI in development
- WebSocket (
/ws) - Real-time bidirectional communication - Agent - STT → LLM → TTS pipeline with terminal control
- Daemon - tmux-based terminal management (in-process)
Development
# Run both servers (recommended)
npm run dev
# Or run separately:
npm run dev:server # Express on port 3000
npm run dev:ui # Vite on port 5173
# Type checking
npm run typecheck
# Build for production
npm run build
# Start production server
npm start
Project Status
✅ Completed (Phases 1-2):
- Package setup and configuration
- Express server with WebSocket
- React UI with Vite
- WebSocket client with ping/pong testing
⏳ In Progress (Phase 3):
- Terminal control (tmux integration)
📋 Planned (Phases 4-9):
- LLM integration (OpenAI GPT-4)
- Agent orchestrator
- Speech-to-Text (Deepgram)
- Text-to-Speech (OpenAI)
- Audio streaming
- UI polish
See IMPLEMENTATION_PLAN.md for complete details.
Environment Variables
OPENAI_API_KEY=your-openai-key-here # GPT-4 and TTS
DEEPGRAM_API_KEY=your-deepgram-key-here # Streaming STT
STT_MODEL=whisper-1 # Optional: override to gpt-4o-transcribe, etc.
STT_CONFIDENCE_THRESHOLD=-3.0 # Optional: reject low-confidence clips
STT_DEBUG_AUDIO_DIR=.stt-debug # Optional: persist raw dictation audio for debugging
PASEO_HOME=~/.paseo # Runtime state directory (agents/, etc.)
PASEO_LISTEN=127.0.0.1:6767 # Listen address (host:port or /path/to/socket)
PASEO_HOME defaults to ~/.paseo and isolates runtime artifacts like agents/. PASEO_LISTEN controls the daemon listen address. For blue/green testing you can run a parallel server without touching production state:
PASEO_HOME=~/.paseo-blue PASEO_LISTEN=127.0.0.1:7777 npm run dev
Tech Stack
- Server: Express, TypeScript, ws (WebSocket)
- Client: React 18, Vite, TypeScript
- Terminal: tmux (via child_process)
- AI: OpenAI (LLM + TTS), Deepgram (STT)
Testing
Currently manual testing via:
- Start servers:
npm run dev - Open http://localhost:5173
- Test WebSocket connection (green status indicator)
- Click "Send Ping" button to test communication
More testing guidance as features are implemented.
License
MIT