feat: add MineRatings.ts and ReflectionCapture hook — learning pipeline

[nbost130]

Summary

Two additions that complete the PAI learning feedback pipeline: automated rating mining and automated LEARN phase reflection capture.

1. Tools/MineRatings.ts — Rating Pattern Extraction

New Bun CLI tool that mines ratings.jsonl + failure captures for actionable behavioral patterns. Closes the feedback loop between rating capture and corrective action.

• Reads implicit/explicit rating data captured by RatingCapture.hook.ts
• Clusters ratings into low (1-4) and high (8-10) tiers
• Uses Haiku inference to extract "STOP doing" and "DO MORE of" patterns
• Auto-generates draft steering rules in Statement/Bad/Correct format
• High-water-mark tracking — only analyzes NEW ratings since last run

bun MineRatings.ts              # Analyze only NEW ratings since last run
bun MineRatings.ts --all        # Analyze ALL ratings (ignore high-water-mark)
bun MineRatings.ts --dry-run    # Print stats only, no AI inference
bun MineRatings.ts --since 7    # Only analyze last 7 days

2. ReflectionCapture.hook.ts — Auto-Capture LEARN Reflections

New SessionEnd hook that scans transcripts for Algorithm LEARN phase content and writes structured JSONL to algorithm-reflections.jsonl, feeding MineReflections downstream analysis.

• Extracts Q1 (Self), Q2 (Algorithm), Q3 (AI) reflection fields
• Supports both **Q1 (Self):** and Q1 — Self: output formats
• Deduplicates by session_id to prevent double writes on resumed sessions
• Reads AlgorithmTracker state for criteria counts and effort level
• Tested against real transcripts with verified extraction

Pipeline Flow

Session → RatingCapture (implicit/explicit) → ratings.jsonl → MineRatings.ts → steering rules
Session → LEARN phase → ReflectionCapture.hook → algorithm-reflections.jsonl → MineReflections

Test plan

• MineRatings: --dry-run mode verified against real ratings data
• ReflectionCapture: Extracted Q1/Q2/Q3 from real transcripts (2 LEARN blocks)
• ReflectionCapture: Deduplication confirmed (second run with same session_id skips)
• ReflectionCapture: Registered in settings.json SessionEnd hooks

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