# Changelog 70: Router SupervisorRouter Core

**Date:** 2025-12-01
**Type:** Feature
**Task:** TASK-039-16

## Summary

Implemented the SupervisorRouter Core - the main orchestrator that processes LLM tool calls through an 8-step intelligent pipeline.

## Changes

### New Files

- `server/router/application/router.py` - Full SupervisorRouter implementation
- `tests/unit/router/application/test_supervisor_router.py` - 37 unit tests

### Updated Files

- `server/router/application/__init__.py` - Export SupervisorRouter
- `server/router/__init__.py` - Export SupervisorRouter

### Features

1. **8-Step Pipeline**
   - Intercept: Capture LLM tool calls
   - Analyze: Read scene context via RPC
   - Detect: Identify geometry patterns
   - Correct: Fix params/mode/selection
   - Override: Replace with better alternatives
   - Expand: Transform to workflows
   - Firewall: Validate operations
   - Output: Return corrected tool list

2. **Component Orchestration**
   - Integrates all Phase 1-3 components
   - Unified configuration via RouterConfig
   - Processing statistics tracking

3. **Context Simulation**
   - Simulates mode switches for validation
   - Tracks selection state changes
   - Enables accurate firewall validation

4. **Batch Processing**
   ```python
   result = router.process_batch([
       {"tool": "mesh_extrude_region", "params": {"depth": 0.5}},
       {"tool": "mesh_bevel", "params": {"width": 0.1}},
   ])
   ```

5. **Intent Routing**
   ```python
   tools = router.route("extrude the top face")
   # Returns: ["mesh_extrude_region", "mesh_inset", ...]
   ```

### API

```python
from server.router import SupervisorRouter, RouterConfig

router = SupervisorRouter(config=RouterConfig(), rpc_client=rpc)

# Process single call
result = router.process_llm_tool_call("mesh_extrude_region", {"depth": 0.5})

# Process batch
result = router.process_batch([...])

# Route natural language
tools = router.route("bevel the edges")

# State management
context = router.get_last_context()
pattern = router.get_last_pattern()
stats = router.get_stats()
router.invalidate_cache()
router.reset_stats()
```

## Test Coverage

- 37 unit tests for SupervisorRouter
- 408 total router tests passing

## Related

- Part of Phase 4: SupervisorRouter Integration
- Completes the core router functionality
- Next: MCP Integration (TASK-039-17)
