fix(bench): build library packages before bundle-size in CI, fail loudly

[koficodedat]

Summary

The live docs page (/benchmarks/) shows ERROR for neutro/form and neutro/form (minimal) Gzip size. This is the same bug as an earlier fix (5161336, "fix(bench): resolve bundle-size ERROR + scorecard self-comparison bug") resurfacing, not a new bug.

Root cause: bench-full.yml and bench-weekly.yml never run pnpm build before the bundle-size step. The bundle-size fixtures (bench/fixtures/bundle/neutro.ts, neutro-minimal.ts) import @neutro/form-core and @neutro/form (the alias package) by name — resolved via each package's real dist/ output (gitignored). Unlike bench:core (Vitest, aliases straight to src/) or the demo apps (same alias trick in their Vite configs), esbuild resolves these through real package resolution, so a fresh CI checkout with no dist/ fails to bundle them. measure.ts's try/catch silently recorded status: "error" instead of throwing, so the job reported success while publishing a broken result straight to the live docs page.

The earlier fix only rebuilt packages and regenerated the docs by hand, once, locally — it never touched the workflows, so it recurred the very next time bench-full.yml actually ran (the v0.5.1 tag push a few hours ago).

Changes

• Added a root pnpm install --frozen-lockfile + pnpm build step to both bench-full.yml and bench-weekly.yml, before bench's own --ignore-workspace installs — matches the pattern ci.yml's bench-apps-typecheck job already uses.
• bench/suites/bundle/measure.ts now calls process.exit(1) if any neutro/form* entry comes back status: "error" — a failure to bundle our own library is an environment bug, not a real result, and must never be silently published again.
• Regenerated bench/results/baseline.json and docs/benchmarks/index.md from a full local bench:full run (packages built first) to fix the currently-live broken page immediately: neutro/form is now 11.9 KB gzip, neutro/form (minimal) is 8.0 KB.

Test plan

• Verified the bug reproduces: reverted the fix locally, confirmed tsc/build-less bundle-size run produces Could not resolve "@neutro/form-core" matching the committed baseline.json's recorded error
• Ran the full local pipeline (bench:apps:build, bench:core, bench:correctness, bench:browser, bench:bundle-size, bench:merge, copy latest.json → baseline.json, bench:generate) with packages built first — all neutro/form* bundle-size entries now status: "ok"
• pnpm lint && pnpm exec tsc --noEmit && pnpm build && pnpm test all pass (269 test files, 10838 tests)
• Confirmed my new code in measure.ts doesn't introduce any new tsc errors beyond bench's pre-existing (unrelated, ungated) missing-@types/node gap

Done in an isolated worktree per request; ready to merge to main once reviewed.

🤖 Generated with Claude Code

https://claude.ai/code/session_014iNaPqgsuTJYYDw4Py24Dc