v0.76.0

What's Changed

• docs: restructure agent contract — 549-line CLAUDE.md → 72-line AGENTS.md by @wikithoughts in #341
• feat(acontext): add_note write-back + catalog retrieval — v0.76.0 by @wikithoughts in #338
• fix(disk): stop Indexa from filling the disk — 5 root-cause fixes by @wikithoughts in #337
• feat(privacy): safe-by-default sensitive-path deny list + index-time redaction by @wikithoughts in #335

Full Changelog: v0.75.0...v0.76.0