✅ 4. drift_signature_example.json.md

# drift_signature_example.json — Explanation
 
## Purpose
Demonstrates **progressive structural drift** across a sequence.
 
## Structure
- Segment 1: L1 → L2 → L3  
- Segment 2: L1 → L2 → L4 (drift at final element)  
- Segment 3: L1 → L5 → L4 (drift at middle element)
 
## Detection Notes
- **Drift points:** segment 2 (end), segment 3 (middle)  
- **Drift intensity:** increasing  
- **Drift direction:** formal → emergent  
- **Coherence:** partially preserved via L1 anchor