conductor(tracks): Add two deferred future tracks

- aggregation_smarter_summaries: Sub-agent summarization, hash-based caching
- system_context_exposure: Expose hidden _SYSTEM_PROMPT for user customization

conductor/tracks.md

@@ -35,9 +35,17 @@ This file tracks all major tracks for the project. Each track has its own detail
 7. [ ] **Track: Optimization pass for Data-Oriented Python heuristics**
     *Link: [./tracks/data_oriented_optimization_20260312/](./tracks/data_oriented_optimization_20260312/)*
 
-8. [x] **Track: Rich Thinking Trace Handling** - *Parse and display AI thinking/reasoning traces*
+ 8. [x] **Track: Rich Thinking Trace Handling** - *Parse and display AI thinking/reasoning traces*
    *Link: [./tracks/thinking_trace_handling_20260313/](./tracks/thinking_trace_handling_20260313/)*
 
+ 9. [ ] **Track: Smarter Aggregation with Sub-Agent Summarization**
+    *Link: [./tracks/aggregation_smarter_summaries_20260322/](./tracks/aggregation_smarter_summaries_20260322/)*
+    *Goal: Sub-agent summarization during aggregation pass, hash-based caching for file summaries, smart outline generation for code vs text files.*
+
+ 10. [ ] **Track: System Context Exposure**
+     *Link: [./tracks/system_context_exposure_20260322/](./tracks/system_context_exposure_20260322/)*
+     *Goal: Expose hidden _SYSTEM_PROMPT from ai_client.py to users for customization via AI Settings.*
+
 ---
 
 ### GUI Overhauls & Visualizations