feat: semantic compression — rolling digests and recall deprioritization (#9)

[rahilp]

Summary

• Nightly cron compresses tags with >10 compressible entries into a single synthesized digest entry
• endpoint for on-demand compression triggered from the Settings UI
• source entries penalized 0.4× in recall scoring so digests surface above originals
• Digest header is clean; each source entry gets appended in D1 only (no re-embedding), enabling future un-digest
• Stats query mirrors filters exactly (importance < 4, ) so UI counts match reality
• Settings sheet renders eligible tags with Digest buttons; menu scrolls safely at
• cards render at 0.65 opacity; cards get accent-colored left border
• tightened: threshold raised to 10, 48h cooldown via D1 check to prevent spam
• Originals are never deleted — digests are additive

Test plan

• Open Settings, confirm tags with ≥10 compressible entries appear in the digest section
• Click Digest on a tag — confirm button shows spinner, then success with entry count
• Run for a query related to the compressed tag — synthesized digest should rank above rolled-up originals
• Confirm rolled-up cards appear dimmed (0.65 opacity) and digest cards have accent border in both Recall and Recent views
• Confirm originals are still searchable via with high or tag filter
• confirm nightly handler logs per-tag compression
• Run test suite — 249 tests pass

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	70.03%	437 / 624
🔵	Statements	69.91%	509 / 728
🔵	Functions	69.69%	69 / 99
🔵	Branches	64.16%	299 / 466

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/index.ts	67.65%	60.43%	67.03%	67.97%	94-141, 161, 432, 439, 480, 674, 785, 791, 800, 808-828, 878, 918, 931, 946-1295, 1304-1308, 1321-1346, 1364, 1405, 1442, 1574-1584, 1606, 1616

Generated in workflow #123 for commit c2797e9 by the Vitest Coverage Report Action