Pre-existing work committed before starting Ralph self-improvement run on
ralph/echo-improve branch, so that branch's diff stays isolated to the
pocket-tts integration.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Expose a navigation layer to the agent and harden RAG, after analyzing the
OKF note and testing on the real KB.
- memory_search.search(): dedupe best-chunk-per-file (a relevant note can no
longer be buried by another file's chunks) + keyword fallback tagged
degraded:True when Ollama is unreachable (no more hard crash).
- update_notes_index.py: emit per-folder index.md + root router; prune empty
folders; fix latent subcategory->project bug.
- Exclude generated index.md from RAG rglob (reindex/incremental) + indexer
scans + heartbeat freshness check (prevents self-pollution / reindex thrash).
- CLAUDE.md: reframe memory as hybrid (navigation first, RAG for fuzzy recall).
- Delete stale orphan kb/youtube/index.json; correct the OKF source note.
- Tests: dedup, keyword fallback, index.md exclusion. Plan + review in docs/.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
