dtoro fc63b1f69d config: env-driven CORS, ports, log level, timezone ...

The CORS allowed-origins list, host port mappings, log level, container
timezone, and worker concurrency are now all driven by environment
variables with sane defaults. Same-origin access through the nginx
proxy keeps working with no config; direct cross-origin backend
access can be locked down via ALLOWED_ORIGINS.

- backend/config: ALLOWED_ORIGINS env (comma-separated, "*" for any)
  exposed via settings.cors_origins. LOG_LEVEL too.
- backend/main: build the CORS middleware from settings.cors_origins,
  auto-disable allow_credentials when origins is wildcard (CORS spec
  forbids credentials + "*").
- docker-compose: parameterize FRONTEND_PORT, BACKEND_PORT, REDIS_PORT,
  CELERYD_CONCURRENCY, LOG_LEVEL, and TZ via ${VAR:-default} so each
  has a working fallback if the .env entry is missing.
- .env.example: new template documenting every knob with examples.
- .env: pruned to only the values that diverge from .env.example;
  removed dead VITE_API_URL.
- README: configuration knobs table + "accessing from another machine"
  section explaining the same-origin proxy story.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-08 20:31:59 +02:00

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