docs: update test coverage and v2.0.0 status after TASK-203

- Update test plan: 2 unit test files, 7 E2E test files
- Add 08-task/ directory to spec index structure
- Update status: v2.0.0 implementation in progress (3/19 tasks)

Author: wuchuheng

agent-docs/00-control/00-spec.md

@@ -2,8 +2,8 @@
 
 **Project**: web-sqlite-js (web-sqlite-v2 repository)
 **Version**: 1.1.2
-**Last Updated**: 2026-01-10
-**Status**: Stage 7 Complete - v2.0.0 Architecture Ready for Implementation
+**Last Updated**: 2026-01-11
+**Status**: v2.0.0 Implementation In Progress (3/19 tasks complete)
 
 ---
 
@@ -125,6 +125,10 @@ agent-docs/
 └── 07-taskManager/                   # Stage 7: Roadmap & Tasks (✓ COMPLETE)
     ├── 01-roadmap.md           # Release strategy and timeline
     └── 02-task-catalog.md      # Task breakdown and Kanban board
+│
+└── 08-task/                          # Stage 8: Active Task Specs
+    └── active/                       # Micro-specs for tasks in progress
+        └── TASK-203.md               # Registry Integration spec
 ```
 
 **Doc Update Checklist**:

agent-docs/06-implementation/02-test-plan.md

@@ -571,8 +571,8 @@ Output: `coverage/index.html`
 
 **Actual Test Coverage**:
 
-- **Unit tests**: 1 file (mutex) - ~200 lines of testable utility code
-- **E2E tests**: 6 test files covering all API surface and critical flows
+- **Unit tests**: 2 files (mutex, registry) - ~400 lines of testable utility code
+- **E2E tests**: 7 test files covering all API surface and critical flows
 
 ---