Create internal/ai/patterns package:
1. Pattern Detector (detector.go):
- Records historical events (high memory, OOM, restarts, etc.)
- Detects recurring failure patterns
- Calculates average interval between occurrences
- Computes confidence based on pattern consistency
- Predicts when failures will occur again
- Persists to ai_patterns.json
2. Event types tracked:
- high_memory, high_cpu, disk_full
- oom, restart, unresponsive
- backup_failed
3. Integration:
- Wire PatternDetector into router startup
- Add to AI context in buildEnrichedContext
- FormatForContext generates failure predictions
Example AI context now includes:
'OOM events typically occurs every ~10 days (next expected in ~3 days)'
This enables proactive alerts before problems recur.
All tests passing.
