refinement of upcoming tracks

conductor/tracks/tool_usage_analytics_20260306/spec.md

@@ -1,21 +1,35 @@
 # Track Specification: Tool Usage Analytics (tool_usage_analytics_20260306)
 
 ## Overview
-Analytics panel showing most-used tools, average execution time, and failure rates. Uses existing tool_log_callback data.
+Analytics panel showing most-used tools, average execution time, failure rates.
 
-## Architectural Constraints
-- **Efficient Aggregation**: Analytics MUST use efficient data structures.
-- **Memory Bounds**: History MUST be bounded to prevent growth.
+## Current State Audit
+
+### Already Implemented
+- **`ai_client.tool_log_callback`**: Called when tool executes
+- **`mcp_client.dispatch()`**: Routes tool calls
+- **No aggregation or storage**
+
+### Gaps to Fill
+- No tool usage tracking
+- No execution time tracking
+- No failure rate tracking
 
 ## Functional Requirements
-- **Usage Ranking**: Show most-used tools ranked by count.
-- **Avg Time**: Display average execution time per tool.
-- **Failure Rate**: Track and display failure percentage per tool.
-- **Time Series**: Show usage over time.
+- Track tool name, execution time, success/failure
+- Aggregate by tool name
+- Display ranking by usage count
+- Show average time per tool
+- Show failure percentage
+
+## Key Integration Points
+| File | Purpose |
+|-----|---------|
+| `src/ai_client.py` | Hook into tool_log_callback |
+| `src/gui_2.py` | Analytics panel rendering |
 
 ## Acceptance Criteria
-- [ ] Tool ranking displayed.
-- [ ] Average times accurate.
-- [ ] Failure rates tracked.
-- [ ] Time series visualization works.
-- [ ] Uses existing tool_log_callback.
+- [ ] Tool ranking displayed
+- [ ] Average times accurate
+- [ ] Failure rates tracked
+- [ ] 1-space indentation