Replace manual hashtag and mention extraction with applesauce's NoteBlueprint,
which automatically extracts hashtags, mentions, and event quotes from text content.
Changes:
- Simplify SerializedContent interface by removing manually extracted fields
- Remove hashtag extraction regex and mention/eventRef tracking from editors
- Replace manual event building with factory.create(NoteBlueprint, ...)
- Use q tags for event quotes (NIP-18) instead of e tags
Benefits:
- ~70 lines of code removed
- Leverage battle-tested applesauce extraction logic
- Automatic benefits from future applesauce improvements
- Correct semantic tags (q for quotes, p for mentions, t for hashtags)
What still works:
- Custom emoji tags (NIP-30)
- Blob attachments/imeta tags (NIP-92)
- Address references (naddr - not yet in applesauce)
- Client tag
All tests pass (980/980).
09870521b1