feat(system): S63 full system audit — 13 branches dispatched, ~500 new tests, adapter pattern eliminated (#144)

Largest single-session dispatch: 13 branches worked autonomously with zero failures.

Key changes:
- Drone: generic_adapter.py + routing_config.json replace 3 drone_adapter.py files (module registry v2.0.0)
- Seedgo: 225→314 tests, 31/32 checkers now tested, bug fixes, README updated
- AI Mail: paths.py consolidates 8x duplicated _find_repo_root(), 3 new test files
- Flow + Prax: JSON atomic writes (tempfile→fsync→os.replace), corruption root cause fixed
- CLI: __main__.py standalone entry, stubs deleted, README updated
- Trigger: medic wired with systemd service (log_watcher_service.py), E2E tested
- Daemon: 3 demo schedules, pipeline bug fixed, plugins verified
- Skills: list bug fixed (sys.path shadow), 2 demo skills created (inbox_check, branch_health)
- Commons: 12 social features E2E tested, coverage 67%→92%
- Backup: backup_core + test updates

System: 3,330 tests pass, 42 skip, 0 fail. 100% seedgo compliance (32 standards).

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

src/aipass/drone/tests/test_git_module.py

@@ -668,10 +668,10 @@ class TestModuleRegistration:
     """Verify git is registered in the module registry."""
 
     def test_git_in_registry(self) -> None:
-        """git module is registered in _MODULE_REGISTRY."""
-        from aipass.drone.apps.handlers.module_registry_handler import _MODULE_REGISTRY
-        assert "git" in _MODULE_REGISTRY
-        assert _MODULE_REGISTRY["git"] == "aipass.drone.apps.modules.git_module"
+        """git module is registered in _INTERNAL_MODULES."""
+        from aipass.drone.apps.handlers.module_registry_handler import _INTERNAL_MODULES
+        assert "git" in _INTERNAL_MODULES
+        assert _INTERNAL_MODULES["git"] == "aipass.drone.apps.modules.git_module"
 
     def test_module_importable(self) -> None:
         """The registered module path is importable."""