The wireup helper previously read ~/.gbrain/config.json on every gbrain
subprocess invocation. On Garry's Mac, multiple concurrent test runs and
agent integrations were rewriting that file mid-sync, redirecting the
wireup at the wrong brain partway through a 4-min initial import.
This commit adds a `--database-url <url>` flag to the helper and locks
the URL at startup. Precedence:
1. --database-url flag (explicit caller intent)
2. GBRAIN_DATABASE_URL / DATABASE_URL env (CI / manual override)
3. read once from ~/.gbrain/config.json (default)
Whichever wins gets exported as GBRAIN_DATABASE_URL for every child
`gbrain` invocation. Per gbrain's loadConfig at src/core/config.ts:53,
env-var URLs override the file URL — so a process that flips config.json
between two of our gbrain calls can't redirect us. Defense-in-depth:
once the URL is locked, the wireup completes against the original brain
even under hostile filesystem conditions.
setup-gbrain/SKILL.md.tmpl Step 7 now reads the URL out of config.json
once (via python3 inline) and passes it explicitly with --database-url,
so even the very first wireup call is decoupled from config.json mutability.
Three new test cases cover the lock behavior:
- --database-url flag is exported to child gbrain calls
- falls back to ~/.gbrain/config.json when no flag and no env
- flag overrides env GBRAIN_DATABASE_URL and config.json values
The fake gbrain in the test suite now records GBRAIN_DATABASE_URL alongside
each call so tests can assert the helper exported the locked URL.
Total test count: 13 → 16 passing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
e36ff7dd4c