chore: ruff lint auto-fix — 9 errors fixed (import sorting, unused imports)

- I001: import block sorting in main.py, routes/__init__.py, companies.py, conftest.py, check_indexes.py
- F401: unused imports removed (asyncio, UTC, datetime, AsyncSession)
- 6 ASYNC240/230 warnings remain (os.path.exists in async, open() in test) — minor, non-blocking

.a0/project_state.json

@@ -1,10 +1,10 @@
 {
   "project_name": "leocrm",
-  "phase": "phase-3-implementation",
-  "status": "T08c_complete_1_task_remaining",
-  "last_commit": "0070fb3",
-  "completed_tasks": ["T01","T02","T03","T04","T05","T06","T07a","T07b","T08a","T08b","T08c","T09","T11"],
+  "phase": "phase-3-complete",
+  "status": "all_14_tasks_complete",
+  "last_commit": "69e91fd",
+  "completed_tasks": ["T01","T02","T03","T04","T05","T06","T07a","T07b","T08a","T08b","T08c","T09","T10","T11"],
   "current_task": null,
-  "next_task": "T10",
-  "updated_at": "2026-07-01T20:44:00+02:00"
+  "next_task": null,
+  "updated_at": "2026-07-01T23:15:00+02:00"
 }