Add pilot.py — Layer 1 deterministic motor control
Three-layer architecture (Layer 1 of 3):
- Behavior tree: approach NPCs, enter doors, pick up items, explore
- Stuck detection + random unstick maneuvers
- Optional reflex model (Layer 2) integration via --reflex flag
- Goal file: Timmy writes strategy to current_goal.txt
- Escalation file: pilot surfaces novel situations for Timmy
- Trajectory logging: every perception-action pair to JSONL for DPO
- Reuses existing perception parser + CGEvent action functions
- Autosave every 100 cycles, graceful Ctrl+C
Usage: python3 ~/.timmy/morrowind/pilot.py
python3 ~/.timmy/morrowind/pilot.py --reflex --interval 0.5
Refs: #660, #661
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