Task 20: reusable pytest fixtures for the clean-bootstrap test suite.
Tasks 21 and 22 (reader smoke matrix + init smoke matrix) consume them.
- fastapi_test_server boots a real uvicorn subprocess against a tmp DATA_DIR,
pre-seeded with admin@example.com (Admin group), analyst@example.com
(Everyone group), and three tables (one per query_mode: local /
materialized / remote).
- web_session: cookie-authenticated httpx.Client for the admin user.
- test_pat: minted JWT for the analyst with table grants on local +
materialized.
- test_pat_no_grants: same shape, zero resource_grants.
- zero_grants_workspace: subprocess invocation of `agnes init` against the
no-grants PAT; returns the bootstrapped workspace path.
- NONEXISTENT_TABLE: module-level sentinel for the upcoming reader matrix.
Subprocess uvicorn (mirrors tests/test_e2e_corporate_memory.py) instead of
in-thread so DATA_DIR + module-level singletons in src.db don't bleed
across tests. agnes CLI invoked via `python -m cli.main` instead of the
.venv/bin/agnes shim, which depends on .pth file visibility that iCloud
Drive intermittently re-hides on macOS.
