Native Signal adapter using signal-cli TCP JSON-RPC daemon. No Chat SDK
bridge or npm dependencies — uses only Node.js builtins.
Features:
- DM and group message support
- Voice message detection (placeholder text; transcription via
/add-voice-transcription skill)
- Typing indicators (DMs only)
- Mention detection via text match
- Managed daemon lifecycle (auto-start/stop signal-cli)
- Echo suppression for outbound messages
Also fixes init-first-agent.ts to skip channel-prefixing for phone
numbers (+...) and Signal group IDs (group:...), which are native
platform IDs that adapters send without a channel prefix.
Install via /add-signal skill. Uses /init-first-agent for channel wiring.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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