a7617a2cc4
Per code review audit (May 14): transaction correctness bug в
`sync_pzz_zones_to_db()` — inner `db.rollback()` в loop сбрасывал outer
transaction на per-row failures → counts inserted/updated НЕ matched DB state.
## Fix
Wrap UPSERT в loop через `db.begin_nested()` (SAVEPOINT):
- Failure одной row → rollback только её savepoint, outer tx alive
- Successfully inserted rows accumulate в outer tx → commit final
- Outer try/except добавлен для unexpected error → rollback + log + raise
- `finally: db.close()` preserved
Pattern consistent с `domrf_kn.py` (где SAVEPOINT уже работает).
## Preserved
- Function signature + return shape {fetched, inserted, updated, skipped} — unchanged
- Logging contracts
- skipped count теперь корректно включает DB-failure rows (consistent with prior behavior)
## Tests
- No test_pzz_loader.py — skipped
- ruff + AST passed
## Vault
`fixes/Bug_Pzz_Loader_Missing_Savepoint_May14.md` — created (status: resolved).
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| .dockerignore | ||
| .env.example | ||
| .env.runtime.example | ||
| alembic.ini | ||
| debug.log | ||
| Dockerfile | ||
| pyproject.toml | ||
| uv.lock | ||