# matrix-bridge — AGENTS.md

A single-user Matrix bot that turns a message in a project room into a live Claude Code
session in that project's repo on the Mac — surfaced to the phone via Claude Code Remote
Control. It makes the *trigger* portable: from anywhere on the WireGuard network, a Matrix
message starts a session on the Mac in the correct repo, and Remote Control pushes it to the
phone to drive interactively. Single user, private home network, no multi-user/product scope.

> **Inbox check:** At session start, if `~/Projects/standards/INBOX.md` exists, scan it for
> items tagged `(matrix-bridge)` and surface them before proposing next steps; triage with
> `/triage`.

## Core flow (v1)

```
Matrix message in a project room
  → bot (matrix-nio, on the DGX Spark) receives it
  → looks up which repo that room maps to (explicit config — no classification)
  → SSHes to the Mac and runs scripts/gui-launch.sh → launch-claude.sh (repo_dir, message_text)
  → wrapper cd's into the repo, opens a desktop Terminal, and launches `claude` on the message
  → Claude Code Remote Control (auto-enabled) pushes a notification to the phone
  → tap in and drive the session from the Claude app
```

Room determines the repo; the message text becomes the initial prompt — the v1 trigger surface.
*Variant:* a `?`-prefixed message instead runs `ask-claude.sh` (headless `claude -p`) and posts
the full answer back into the room (ask mode, D12).

## Stack

- **Bot:** Python, **matrix-nio** (from the nio-template scaffold), single Docker container.
- **Runs on:** a DGX Spark (always-on Linux, Docker). *Not* Start9, *not* the Mac.
- **Mac seam:** `scripts/launch-claude.sh`, a zsh login-shell wrapper that owns all
  environment setup and launches `claude`.
- **Config:** a readable room→repo mapping file (TOML) — adding a project is a config edit.
- **State:** none beyond config in v1; SQLite or flat files only if a later phase needs them.

## Placement

| Question | Decision | Rationale |
|---|---|---|
| Sensitivity / sovereignty | Local-only when an LLM is ever involved | v1 makes no LLM call; future intent-parsing must run on a local model via Spark Control — message content may reference investor/portfolio context. Never wire a frontier API to message payloads. |
| Runtime shape | Long-running service (always-listening bot) | Must be up unattended to catch messages. |
| Host | DGX Spark, Docker container | Always-on Linux with Docker; co-located with Qwen3 for future local intent-parsing; reaches both Synapse (network) and the Mac (SSH). |
| s9pk vs container | Plain container | Not on Start9 at all — StartOS only runs s9pk packages; don't pay packaging cost, don't touch Synapse. |
| Model routing | None in v1; future Qwen3 via Spark Control | Keeps the sovereignty boundary; deterministic core first. |
| Data layer | Config file (TOML) | v1 needs no datastore. |
| Interface | Matrix (Element) + phone via Remote Control | "Reachable from phone" already satisfied by WireGuard + Remote Control. |
| Repo home | Local + Gitea backup | `ssh://git@immense-voyage.local:59916/grant/matrix-bridge.git`. |

## Commands

- `scripts/launch-claude.sh <repo_dir> <prompt>` — the Mac wrapper (Phase 0 deliverable;
  validate by hand before any bot code).
- **Bot (Phase 1), containerized on the Spark — preferred:** from `~/matrix-bridge`,
  `docker compose up -d --build` (host networking, `restart: unless-stopped` so it survives
  reboots; read-only mounts of `.env`/`config.toml`/SSH key). Logs: `docker compose logs -f`.
  The entrypoint generates `~/.ssh/config` for the `mac-bridge` alias from `config.toml [mac]`
  (`hostname`/`user`), so the alias resolves inside the container. Override the host key path with
  `MB_SSH_KEY_HOST` if it isn't `/home/modelo/.ssh/id_ed25519`.
- **Bot — venv (dev/fallback):** `python3 -m venv .venv && .venv/bin/pip install -r requirements.txt`,
  then `.venv/bin/python src/bot.py` — uses modelo's host `~/.ssh/config` for the alias.
  `MB_SSH_ALIAS` overrides the SSH target for testing.
- **Deploy:** pull the bot files from the Mac (no Gitea needed) —
  `scp mac-bridge:/Users/macpro/Projects/matrix-bridge/{Dockerfile,docker-compose.yml,docker-entrypoint.sh,requirements.txt,config.toml,.env} .`
  and `scp -r mac-bridge:/Users/macpro/Projects/matrix-bridge/src .`, then rebuild.

## Layout

- `AGENTS.md` — this file (canonical; `CLAUDE.md` is a relative symlink to it).
- `ROADMAP.md` — Phases 1–4+ with falsifiable exits, plus deferred/future directions.
- `README.md` — human-facing intro.
- `docs/spark-control-integration.md` — Phase 3 spec for the Spark Control dev: the SSH
  command contract (status / restart / git-pull update) the dashboard drives, plus the one-time
  conversion of the Spark's `~/matrix-bridge` to a Gitea clone. matrix-bridge needs no code change.
- `scripts/launch-claude.sh` — the Mac-side launch wrapper (the only seam that knows the
  Mac's environment).
- `config.example.toml` — room→repo mapping template; the real `config.toml` is gitignored.
- `scripts/gui-launch.sh` — opens the desktop Terminal via `osascript` (Approach B, D11); calls
  `launch-claude.sh` inside it. The bot invokes this over SSH.
- `scripts/ask-claude.sh` — headless `?`-ask wrapper (`#!/bin/zsh -l`): runs `claude -p` in the repo
  and prints the answer to stdout for the bot to capture and post back. Uses `CLAUDE_CODE_OAUTH_TOKEN`
  (Mac-side `.env`) because a non-GUI SSH session can't reach the login Keychain (D12).
- `src/bot.py` — the matrix-nio bot (Phase 1): listens in mapped rooms; a plain message runs
  `ssh mac-bridge gui-launch.sh` (interactive, to the phone), a `?`-prefixed message runs
  `ask-claude.sh` (headless, answer posted back); fans out for all-projects; reports failures back.
- `requirements.txt` (matrix-nio) · `.env.example` (credential schema; real `.env` gitignored).
- `.claude/` — Claude wiring (dir only for now).
- `Dockerfile` · `docker-compose.yml` · `docker-entrypoint.sh` · `.dockerignore` — the Phase 1
  container (Spark). Generic image (no secrets/deployment specifics baked in); host networking;
  read-only mounts of `.env`/`config.toml`/SSH key. The entrypoint generates `~/.ssh/config` for
  the `mac-bridge` alias from `config.toml [mac]` — the container's environment seam (D4 analog
  of `launch-claude.sh`).

## Decisions (already made — don't relitigate without new information)

Condensed from the scoping workshop. Each: the call, why, what it beat.

- **D1 — matrix-nio, not Maubot.** Full control for one custom bot with real SSH-orchestration
  logic; keeps Spark Control as the single dashboard. *Beat:* Maubot (competing web UI,
  management layer we don't need), SimpleMatrixBotLib.
- **D2 — Bot runs on the Spark, not Start9 or the Mac.** Always-on Linux + Docker, co-located
  with Qwen3, reaches Synapse + the Mac. *Beat:* Start9 (no s9pk), Mac (not always-on; it's the
  execution target, not the orchestrator).
- **D3 — Synapse stays untouched.** Treat the existing StartOS Synapse as a fixed external
  homeserver; the bot logs in as an ordinary Matrix user over WireGuard/LAN.
- **D4 — The Mac wrapper is the environment seam.** A `#!/bin/zsh -l` wrapper owns
  PATH/credentials/`cd`/`exec claude`; the bot stays dumb and only invokes it over SSH.
  *Beat:* inlining `source ~/.zprofile && …` from the bot (brittle); relying on the default
  non-interactive SSH shell (the core failure mode — minimal shell loads neither `.zprofile`
  nor `.zshrc`).
- **D5 — Remote Control is the phone-control layer.** Native, E2EE, already auto-enabled;
  execution stays on the Mac. The bot only needs to *start* the session. *Note:* outside server
  mode, one remote session per Claude Code instance.
- **D6 — Room = repo; routing is deterministic in v1.** No classification, no LLM, no path
  branching. *Beat (for v1):* LLM intent parsing → deferred to D8.
- **D7 — No Nextcloud / CalDAV in v1.** Not the pain point; the interesting future (routing
  Claude/bot *outputs* into Nextcloud) is real but unscoped.
- **D8 — Intent parsing deferred, but as a "routing brain."** When added (Phase 4+): a smart
  dispatcher that, knowing all repos/contexts, decides which repo applies and what context to
  inject — not a task-vs-session classifier. MUST run on a local model via Spark Control.
  *Revisit when:* the deterministic core (Phases 1–2) is proven.
- **D9 — E2EE deferred (documented tradeoff).** Single-user bot over WireGuard on a private
  LAN; transport is already private and matrix-nio E2EE adds libolm overhead. *Revisit when:*
  the bot ever handles sensitive content over untrusted transport.
- **D10 — Spark Control manages the bot (Phase 3).** Status on the dashboard + one-click
  update/restart, the same SSH-behind-buttons pattern Spark Control uses for the Sparks today.
- **D11 — Launch into a desktop Terminal, not a headless token (Phase 0).** The SSH session
  can't reach the GUI login Keychain, so a plain `ssh … claude` reports "Not logged in." Rather
  than mint a long-lived `claude setup-token`, the launcher (`scripts/gui-launch.sh`) uses
  `osascript` to open a Terminal.app window in the **GUI session**, where `claude` inherits the
  existing Keychain login and a real TTY. *Beat:* the long-lived OAuth token (Approach A) — works
  and is fully unattended, but adds a credential to manage; kept as the documented fallback if the
  Mac is ever driven headless (logged out). *Cost:* requires the Mac logged in + a one-time
  Terminal Automation grant.
- **D12 — Headless "ask" mode uses the long-lived token; interactive stays GUI-Terminal (2026-06-16).**
  A `?`-prefixed message runs `claude -p` headlessly over plain SSH and posts the answer back, so its
  stdout must be captured over the SSH pipe — which rules out the GUI-Terminal path (D11), and a
  non-GUI session reports "Not logged in." Ask mode therefore deliberately adopts the long-lived
  `claude setup-token` (`CLAUDE_CODE_OAUTH_TOKEN`) that D11 deferred — kept **Mac-side only** (in
  `.env`; the Spark never runs claude). Interactive launches keep the token-free GUI-Terminal path.
  *Sovereignty unchanged:* `claude -p` uses the subscription, no frontier API touches message payloads.

## Sovereignty constraint

v1 sends nothing to external services except what is deliberately typed into the Claude Code
session itself. The bot's own logic is fully local. **When intent parsing is added later it
MUST run on a local model via Spark Control — never a frontier API** — because it reads
message content that may reference investor/LP/portfolio context. Never wire an external API
call that carries message payloads.

## Implementation guardrails (from the workshop)

- **Quoting through SSH is the known footgun.** Message text crosses two shells (the Spark's,
  then the Mac's). Use `shlex.quote` (or equivalent) when building the remote command — never
  naive string-concatenate user text into the SSH command.
- **Fail loud on a bad directory.** If a room maps to a missing dir, the wrapper exits
  non-zero (`cd "$1" || exit 1`) and the bot reports the failure back into the room — never
  launches Claude in the wrong place.
- **Config over code** for the room→repo mapping.

## Definition of done per phase

Substance threshold **N = 3** real uses, defined per phase in `ROADMAP.md`. "Done" means
falsifiable, scaled substance (it worked 3 real times), never a checkbox. A phase that "works
once" is not done.

## Infra facts (proven — stable reference)

- **WireGuard (`starttunnel`) for Mac↔Spark:** Mac `10.59.211.5`; Spark (`spark-32d0`, user `modelo`)
  `10.59.211.6`. The Mac↔Spark seam runs over WireGuard (not the Mac's LAN subnet). The Spark *is*
  on the LAN, same as the Start9 host (`immense-voyage`) — so Spark→Gitea (`immense-voyage.local:59916`)
  resolves and works directly.
- **Spark → Mac:** SSH alias `mac-bridge` → the Mac as user `macpro`, dedicated key
  (`~/.ssh/id_ed25519` on the Spark, in the Mac's `authorized_keys`). The Spark host's `~/.ssh/config` needs `IdentitiesOnly yes` because a
  `Host *` rule shadows the default key; the container regenerates a clean config from `config.toml [mac]`.
- **Mac → Spark:** no authorized key — direct Mac-initiated Spark ops stay owner-run. (This is *not*
  what Phase 3 closes: Spark Control already has its own SSH channel into `spark-32d0`, so its
  status/update/restart buttons ride that, not a Mac→Spark key.)
- **Matrix:** homeserver `https://matrix.gilliam.ai` (StartOS Synapse), bot `@agent:matrix.gilliam.ai`,
  device `matrix-bridge-bot`. The bot reuses the stored access token (`.env`) — never re-logs in
  (avoids device churn). No E2EE (D9); bot↔Synapse is clearnet TLS, softening D9's WireGuard-only rationale.
- **Mac env:** `claude` lives in `~/.local/bin`, on PATH only via `~/.zprofile` — so every wrapper is
  `#!/bin/zsh -l` (a non-login SSH shell loads neither `.zprofile` nor `.zshrc`).
- **Interactive-launch prereqs:** Mac logged into its desktop + a one-time Terminal Automation grant
  (TCC). If the grant resets, a launch stalls — the bot reports it fail-loud rather than hanging.
- **Folder-trust gate:** the first `claude` run in a repo it has never been opened in stalls on the
  trust prompt; already-used repos are trusted. Affects unattended interactive launches and ask mode.

## Current state

- **Working & proven live on the Spark (Phases 0–1 + ask mode, 2026-06-16).** The bot runs as a Docker
  container on the Spark (`~/matrix-bridge`, `docker compose up -d --build`): generic image, host
  networking, `restart: unless-stopped`, read-only mounts of `.env`/`config.toml`/SSH key. Listens as
  `@agent` in 11 project rooms + an all-projects fan-out room (each fan-out session named `<repo> - <date>`).
- **Interactive** (plain message): `ssh mac-bridge → gui-launch.sh → launch-claude.sh → claude` →
  drivable session on the phone via Remote Control.
- **Ask mode** (`?`-prefixed message): `ssh mac-bridge → ask-claude.sh → claude -p`, full answer posted
  back into the room (chunked, no truncation). See D12.
- **Phase 2 (multi-room routing) — DONE.** Owner confirmed the N=3 pass: routes by `room_id`,
  correct repo, zero wrong-directory launches.
- **Phase 3 (Spark Control integration) — spec drafted, handed to the Spark Control dev (2026-06-15).**
  See `docs/spark-control-integration.md`: the SSH command contract (status via `docker inspect`;
  restart via `docker restart`; update via `git fetch && git reset --hard origin/master &&
  docker compose up -d --build`) plus a one-time conversion of the Spark's `~/matrix-bridge` from
  scp'd loose files to a Gitea clone (secrets are gitignored, so `reset --hard` preserves them).
  Decisions this session: update source = git-pull-from-Gitea (not scp-from-Mac); Spark Control
  already SSHes into `spark-32d0`, so no new key. **matrix-bridge needs no code change** — the work
  is now Spark Control-side (status tile + buttons) + the one-time Spark migration. Awaiting the dev.
- **Open / risks:** a `?`-ask in a repo `claude` has never opened may stall on the folder-trust gate
  — add a trust flag to `ask-claude.sh` if/when hit, not preemptively. (Resolved this session: the
  accidental MacBook docker deploy was cleaned up by the owner.)
- **Repo:** `master` == `phase-1`, pushed to Gitea; the Phase 3 spec + doc updates landed as `e5a751d`.
  No test suite (pre-existing); the doc is a spec, no code changed.