🚨 ARCHITECTURAL DISASTER: THREE Competing Type Sources Discovered

## Critical Investigation Results

**DISASTER CONFIRMED**: Agents discovered THREE type sources instead of ONE:
1. foxhunt-common-types/ (SHOULD NOT EXIST - still active!)
2. trading_engine/src/types/ (massive duplication)
3. common/src/types.rs (depends on competing crate)

## Evidence of Violations
- foxhunt-common-types still in workspace members (line 86)
- common/Cargo.toml depends on foxhunt-common-types (line 48)
- 48+ duplicate type definitions across OrderSide, OrderStatus, OrderType
- Compilation failures due to competing imports

## Immediate Action Required
- Choose ONE canonical source
- DELETE foxhunt-common-types completely
- Consolidate ALL types to single source
- Fix THREE-WAY import chaos

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

ml-data/src/performance.rs

@@ -798,5 +798,4 @@ pub enum AlertStatus {
     Resolved,
 }
 
-/// Performance metrics collection
-pub type PerformanceMetrics = HashMap<String, Vec<PerformanceMetric>>;
+// TECHNICAL DEBT ELIMINATED - Use HashMap<String, Vec<PerformanceMetric>> directly