feat: Enhance search functionality with quality tiers and scoped indexing

- Updated `search_code` function to include a `quality` parameter for search quality tiers: "fast", "balanced", "thorough", and "auto".
- Introduced `search_scope` function to limit search results to a specific directory scope.
- Added `index_scope` function for indexing a specific directory without re-indexing the entire project.
- Refactored `SearchPipeline` to support quality-based routing in the `search` method.
- Implemented `Shard` and `ShardManager` classes to manage multiple index shards with LRU eviction and efficient file routing.
- Added debounce functionality in `IncrementalIndexer` to batch file events and reduce redundant processing.
- Enhanced `FileWatcher` to integrate with `IncrementalIndexer` for improved event handling.

.claude/skills/team-iterdev/roles/coordinator/commands/dispatch.md

@@ -227,7 +227,7 @@ Verify task chain integrity:
 | Check | Method | Expected |
 |-------|--------|----------|
 | Task count correct | TaskList count | patch: 2, sprint: 4, multi: 5+ |
-| Dependencies correct | Trace blockedBy graph | Acyclic, correct ordering |
+| Dependencies correct | Trace addBlockedBy graph | Acyclic, correct ordering |
 | No circular dependencies | Trace full graph | Acyclic |
 | Structured descriptions | Each has PURPOSE/TASK/CONTEXT/EXPECTED | All present |
 

.claude/skills/team-iterdev/roles/coordinator/role.md

@@ -111,13 +111,13 @@ mcp__ccw-tools__team_msg({
 
 Delegate to @commands/dispatch.md:
 1. Read specs/pipelines.md for selected pipeline task registry
-2. Create tasks via TaskCreate with blockedBy
+2. Create tasks via TaskCreate, then TaskUpdate with addBlockedBy
 3. Update task-ledger.json
 
 ## Phase 4: Spawn-and-Stop
 
 Delegate to @commands/monitor.md#handleSpawnNext:
-1. Find ready tasks (pending + blockedBy resolved)
+1. Find ready tasks (pending + all addBlockedBy dependencies resolved)
 2. Spawn team-worker agents (see SKILL.md Spawn Template)
 3. Output status summary
 4. STOP