docs: fix all remaining review issues for 10/10 accuracy

function-inventory.md:
- Fix SnapshotStateMapper → OwnClientSnapshotState + add 3 missing functions
- Fix enum variant counts: CoreError 7→12, ProtocolError 9→10, BridgeError 8→7, AudioError 7→8

coverage-analysis.md:
- Fix total Dart tests 221→233
- Fix chat_views_test.dart count 18→29
- Fix widget test count 13→14, add audio_device_list_tile_test.dart
- Fix total doc count 55→86

doc-quality-analysis.md:
- Relabel 'Useless Content' → 'Path Record Files (DV Navigation Aids)'
- Soften 'identical' → 'overlapping' for commit examples

README.md:
- Update Dart test count 221→233

docs/offline-knowledge/coverage-analysis.md

@@ -11,10 +11,10 @@
 |--------|-------|
 | Total Rust tests (inline `#[test]`) | 312 |
 | Total Rust integration tests | 6 |
-| Total Dart tests (`test()` + `testWidgets()`) | 221 |
+| Total Dart tests (`test()` + `testWidgets()`) | 233 |
 | Crates with tests | 7/9 |
 | Dart services with tests | 19/21 (90%) |
-| Dart widgets with tests | 13/24 (58%) |
+| Dart widgets with tests | 14/24 (58%) |
 | Overall estimated coverage | ~65% |
 
 ---
@@ -176,7 +176,7 @@
 | audio_processing_config_state.dart | ✅ audio_processing_config_state_test.dart | 8 | Tested |
 | bbcode_text.dart | ✅ bbcode_text_test.dart | Tested |
 | chat_panel.dart | ✅ chat_panel_test.dart | Tested |
-| chat_views.dart | ✅ chat_views_test.dart | 18 | Tested |
+| chat_views.dart | ✅ chat_views_test.dart | 29 | Tested |
 | client_info_sheet.dart | ✅ client_info_sheet_test.dart | Tested |
 | poke_notification_settings.dart | ✅ poke_notification_settings_test.dart | Tested |
 | snapshot_view.dart | ✅ snapshot_view_test.dart | Tested |
@@ -186,7 +186,7 @@
 | voice_status_summary.dart | ✅ voice_status_summary_test.dart | 5 | Tested |
 | mobile_ui_resilience.dart | ✅ mobile_ui_resilience_test.dart | Tested |
 | **audio_debug_stats_panel.dart** | ❌ No test file | 0 | **UNTESTED** |
-| **audio_device_list_tile.dart** | ❌ No test file | 0 | **UNTESTED** |
+| **audio_device_list_tile.dart** | ✅ audio_device_list_tile_test.dart | 3 | Tested |
 | **audio_output_tile.dart** | ❌ No test file | 0 | **UNTESTED** |
 | **connect_widgets.dart** | ❌ No test file | 0 | **UNTESTED** |
 | **input_dialogs.dart** | ❌ No test file | 0 | **UNTESTED** |
@@ -212,7 +212,7 @@
 
 | Metric | Count |
 |--------|-------|
-| Total doc files (under docs/) | 55 |
+| Total doc files (under docs/) | 86 |
 | Modules documented | ~15 areas |
 | Estimated outdated docs | 3-5 |