Kudzu 0.8.24 - Measured Goal B optimizations

Kudzu 0.8.24 starts the architecture optimization Goal B with two benchmark-proven optimizations for large keyed restoration and large multi-route builds while preserving complete HTML, direct DOM ownership, and existing compiler output. This is distinct from the completed historical Worker capability milestone in GOAL_B.md.

Changed

• A maintained npm run benchmark:keyed fixture measures 2,000 keyed rows with row-local state, reactive slicing/search, bulk restoration, retained-heavy append, reversal, DOM identity, reset state, and restored handlers across fresh Chrome profiles.
• Top-level flat lists batch mount-hook discovery through their connected parent only when more than 32 additions dominate both the next list and parent children. Nested lists, shared containers, and small or retained-heavy additions keep per-root mounting.
• applyNormalizationPasses() repairs TypeScript parent pointers only after a pass returns a structurally changed SourceFile; validators and no-op passes no longer walk the complete AST again.
• A focused test proves changed normalization output has repaired parent links before the next pass runs.
• Goal B records identical generated route entries as the next measured esbuild-transform investigation; no cache or generalized build system was added without isolated evidence.

Performance

• Twenty-one fresh Chrome profiles measured 2,000-row restoration at 21.1 ms versus 26.3 ms for 0.8.23, a 19.77% improvement. A retained-heavy 33-row append showed no material change at 2.7 ms versus 2.6 ms.
• The keyed route adds 127 B raw / 35 B aggregate gzip JavaScript. Filter, reverse, and clean-build distributions establish no material regression.
• Twenty-one alternating clean builds of SimYunSup/kudzu-based-bench's 1,000-product, 1,011-page Kudzu fixture measured 6,266.5 ms versus 6,684.7 ms for 0.8.23, a 6.26% improvement.
• Both commerce builds emitted the same 3,056 files. Only assets/kudzu-list.js changed for the independently measured runtime optimization; normalization changed no output bytes.
• Exact keyed worktree setup and the checked-in benchmark:commerce paired runner are documented in PERFORMANCE.md with raw arrays and limitations.

Validation

• npm run check and all 172 tests pass, including the new normalization boundary check.
• Node 22 focused compiler checks and the maintained Worker benchmark pass.
• Chrome-backed keyed list, selector, row-hook, Worker ownership, and the new large keyed benchmark checks pass.
• Before release-content updates, the complete site plus representative list, keyed-row-hook, and navigation builds retained identical file lists; only assets/kudzu-list.js changed, and normalized .kudzu trees remained identical to v0.8.23.
• No accepted syntax, public API behavior, VDOM, hydration, scheduler, cache, retained browser component tree, or create-kudzu template change was added.

Upgrade

npm install @kudzujs/core@^0.8.24