P2-D: Prototype Recomputer (DELIVERS: prototype quality) #32
Description
Why: Keep volume/shelf prototypes accurate as pages/books change. Prototype updates change which entries should occupy the volume and shelf tier quotas.
-
P2-D1: Implement
daydreamer/PrototypeRecomputer.ts- Recompute volume medoids (select medoid page per volume)
- Recompute volume centroids (average of book embeddings)
- Recompute shelf routing prototypes
- Update vectors in
VectorStore(append new, update offsets) - After recomputing each level: recompute salience for affected representative entries via
SalienceEngine; run tier-quota promotion/eviction for that tier
-
P2-D2: Add prototype recomputer test coverage
tests/daydreamer/PrototypeRecomputer.test.ts- Test medoid selection algorithm
- Test centroid computation
- Test that tier-quota hotpath entries are updated after prototype recomputation
Exit Criteria: Prototypes stay accurate over time; tier quota entries reflect current prototypes.