Release v1.6.4 — Complexity Reduction Refactor · flamehaven01/Flamehaven-Filesearch

What's Changed

core.py — _restore_from_persistence (depth-5 / CC-17 → depth-3 / CC-5)
Extracted three focused helpers:
- _inject_into_chronos(uri, doc) — embedding generation + ChronosGrid injection
- _restore_store_docs(store_name, docs) — doc dedup + restore loop
- _restore_store_atoms(store_name, atoms) — atom restore loop
  Entry point reduced to 18 lines. No behavior change.
auth.py — list_keys (depth-4 / CC-8 → depth-2)
Extracted two static helpers:
- _decode_permissions(perms_json) — decrypt + JSON parse with raw fallback
- _row_to_key_info(row) — DB tuple → APIKeyInfo conversion
  Body reduced to a single list-comprehension.
api.py — _init_searcher (depth-4 / CC-5 → depth-2)
Extracted _seed_default_store(fs) — holds the nested inner-try that creates the default store and inserts the bootstrap doc.

71 tests pass (no regressions)
Real-vault smoke probe: 156/156 files ingested, 8,405 atoms indexed, 5/5 queries status=success, confidence ≥ 0.840

Full Changelog: https://github.com/flamehaven01/Flamehaven-Filesearch/blob/main/CHANGELOG.md