Step 2 of the brainy 8.0 rename scaffolding. Adds the new algorithm-neutral
config surface alongside the legacy config.hnsw path (which becomes a compat
shim removed in the final cleanup commit).
CHANGES
src/utils/recallPreset.ts (NEW)
- DEFAULT_RECALL = 'balanced'
- HNSW_PRESETS table — fast/balanced/accurate → (M, efConstruction, efSearch).
'balanced' equals brainy 7.x DEFAULT_CONFIG byte-for-byte so a 7.x → 8.0
upgrade with no explicit recall value is a no-op.
- resolveRecallHnswKnobs(preset) — preset → knobs.
- resolveJsHnswConfig(vectorConfig) — preset first, then `advanced.hnsw` overrides
win. Explicit knobs always beat the preset.
src/types/brainy.types.ts
- New optional `vector` field on BrainyConfig:
vector?: {
recall?: 'fast' | 'balanced' | 'accurate'
quantization?: { enabled?, bits?: 8 | 4, rerankMultiplier? }
vectorStorage?: 'memory' | 'lazy'
advanced?: {
hnsw?: { M?, efConstruction?, efSearch?, ml? }
diskann?: { pqM?, pqKsub?, maxDegree?, searchListSize?, alpha?, ... }
}
}
- `hnsw` field marked @deprecated with note that it stays as a compat shim
during the 8.0 rename and is removed in the final cleanup commit.
src/utils/unifiedCache.ts
- Cache-category union widened from
'hnsw' | 'metadata' | 'embedding' | 'other'
to
'hnsw' | 'vectors' | 'metadata' | 'embedding' | 'other'
- 5 union sites + 4 typed-counter maps (typeAccessCounts, checkFairness
typeSizes/typeCounts/accessRatios/sizeRatios, getStats typeSizes/typeCounts,
evictType loop) all gained the 'vectors' key with initial value 0.
- The hard-coded fairness-check loop now iterates both keys.
- Final 8.0 cleanup will narrow back to 'vectors' | 'metadata' | 'embedding' | 'other'.
src/brainy.ts (normalizeConfig)
- Adds the new `vector` field to the Required<BrainyConfig> return shape so
TS compiles. Reads config?.vector ?? undefined as any (same pattern as
the other optional config fields).
NO-OP scope
No behavioural change. The new config.vector path is silently ignored at
runtime in this commit — wired up in step 4 (storage + index resolution).
Pure surface plumbing. Tests + build green.
VERIFICATION
- npx tsc --noEmit: clean
- npm test: 1468 / 1468 unit
