feat(learn): Minimalist memory format v3.0 - 60% size reduction
BREAKING CHANGE: New compact entry format
- Header: `## {P|G}: {Title}` (P=Pattern, G=Gotcha)
- Metadata: `@YYYY-MM-DD #tag1 #tag2 | source:confidence[:reinforced]`
- Max 3 inline tags, no separators, no statistics section
Removed verbose fields: Discovered, Source, Confidence, Trigger
Statistics now calculated dynamically by /learn:status
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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