Cache direct return/yield source expressions by immutable AST identity for all existing static and semantic consumers. Weak keys bound retention to AST lifetime; mutable analysis facts and Evidence remain unchanged. Refs #6311; full CastleIO analysis still times out.
Validation: 225 focused tests; baseline cache-regression controls; build, serial check:fast and test discovery passed. CastleIO direct-syntax facts equal with 78,272 warm lookups reduced from 2.72-2.81s to 13.0-13.4ms. Complete sourcemap-codec CLI analyses retained byte-identical Evidence; no end-to-end speedup or token reduction claimed.
CI: source 20,888 passed / 15 skipped; seven built-dependent shards, static, docs, package builds, Linux native baseline and real JS recovery CLI/MCP passed. Shard 6 Hermes path-preview failures both reproduce on exact main b9d1a61dd; Portable tests fails downstream. Greptile 5/5, no findings; Codex quota exhausted. Authorized admin bypass for unrelated baseline CI and unchecked human readiness; no human review attestation made.
gensokyo-dev