Back to Search-quality baseline: acronym / synonym recall (Phase 1.4, v1.2.0 candidate)

Query | Top-1 | Why this works
--- | --- | ---
`wlan` | `apple-docs://corewlan` (rank 1) | `wlan` appears in CoreWLAN's framework identifier directly; FTS5 finds it without needing the synonyms table
`mpsgraph` | `apple-docs://metalperformanceshadersgraph` (rank 1) | The synonym `mpsgraph` is a partial-token-match of the framework's identifier; the long compound name's BM25F favours the exact-prefix match
`sprite` | `apple-docs://spritekit` (rank 1) | `sprite` is part of `spritekit`; literal substring match
`location` | `apple-docs://corelocation` (rank 1) | `location` is part of `corelocation`; literal substring match

All four wins are explainable by literal-substring or prefix-token matching, not by synonym lookup. The synonyms table may not be contributing to these results at all.