thermograph/backend/.dockerignore

# Local virtualenvs are disposable dev state (see CLAUDE.md), but without this
# file `COPY . /app/` on a dev checkout ships ~400MB of site-packages the image
# already installs via pip — and the chown -R layer then duplicates it AGAIN.
# CI contexts never contain a .venv, so this only protects `:local` dev builds.
# Do NOT add daemon/ here: the daemon-builder stage COPYs it from this same
# context.
.venv*
__pycache__/
*.py[co]
.pytest_cache/
daemon: move the Discord gateway and scheduler out of the web process into Go web/app.py started two long-lived background jobs under a leader election: the Discord gateway bot and an APScheduler. Both are stateful I/O loops -- reconnect, RESUME, heartbeat, backoff, interval timers -- living inside an async web app that also has to serve requests. This moves them into a single Go binary. Go owns ONLY the stateful I/O. It owns no climate or grading logic: anything needing data calls back into Python over a new internal-only HTTP surface (/internal/discord/grade, /internal/jobs/warm-cities, /internal/jobs/indexnow). Grading depends on polars and the parquet cache; reimplementing it in Go would make the bot's grades drift from the API's, and the slash-command path deliberately shares one grade builder so the two can never disagree. The grade route returns gateway-ready JSON -- including the ephemeral-flag drop that discord_bot.py used to do -- and Go relays those bytes verbatim without parsing the embed. Packaging: the binary is built by a golang:1.26 stage in the backend Dockerfile and shipped in the SAME image, run as a second compose service off the SAME tag. The daemon and backend share the /internal/* contract, so they must never skew versions; one image makes that structural rather than a convention. Its entrypoint bypasses entrypoint.sh -- the backend owns alembic, and two racing migrators is a real hazard. replicas: 1 in the Swarm stack is load-bearing. Discord permits exactly one gateway connection per bot token; the pin replaces core/singleton.claim_leader for this workload. update_config uses order: stop-first, since start-first would briefly run two gateways. autoscale.sh targets ${STACK_NAME}_web only, so it cannot scale this. Security: the internal routes compare the token with hmac.compare_digest and the whole router 404s when THERMOGRAPH_INTERNAL_TOKEN is unset -- fail closed, never default open. Caddy only routes /api/, /digest and /discord/interactions to the backend, so /internal/ was never publicly reachable; the token is defence in depth. The router mounts before the catch-all frontend proxy so /internal/* cannot fall through to it. The daemon refuses to start without the token. Behaviour preserved from the Python, with the reasoning carried into the Go comments: non-privileged intents (no MESSAGE_CONTENT, so no portal review); fatal close codes 4004/4010-4014 stop rather than loop; the bot-author and self-author mention-loop guard; allowed_mentions locked to {"parse":[], "replied_user":true} so a crafted query cannot turn a reply into an @everyone ping; the first cron tick deferred one full interval rather than firing at boot, since warm-cities already runs at deploy time; and no overlapping warm-cities run, which would double-spend the archive-fetch quota. Two deliberate improvements over the Python. A close intended for RESUME now uses 4000 rather than 1000 -- Discord invalidates a session closed 1000/1001, so the Python's default close silently defeated its own resume. And MESSAGE_CREATE is handled on a bounded worker pool rather than an unbounded thread hand-off, so a flood of mentions cannot spawn unbounded work against the backend. A .dockerignore is added because a disposable backend/.venv was being swallowed by COPY . /app/ and duplicated again by the chown layer, inflating the image to 1.8 GB; it builds at 578 MB. Tests: 29 Go gateway tests covering every behaviour the deleted test_discord_bot.py asserted, plus cron/config/apiclient suites; 10 new Python tests for the internal routes (fail-closed, auth, flag drop, per-job 409 guard). Full suite 359 passed / 7 skipped; go build, vet and test -race clean. 2026-07-23 22:33:11 +00:00			`# Local virtualenvs are disposable dev state (see CLAUDE.md), but without this`
			# file `COPY . /app/` on a dev checkout ships ~400MB of site-packages the image
			`# already installs via pip — and the chown -R layer then duplicates it AGAIN.`
			# CI contexts never contain a .venv, so this only protects `:local` dev builds.
			`# Do NOT add daemon/ here: the daemon-builder stage COPYs it from this same`
			`# context.`
			`.venv*`
			`__pycache__/`
			`*.py[co]`
			`.pytest_cache/`