feat(web): compare deploy suite runs

[james-elicx]

Summary

• add a compatibility-page panel for comparing two Next.js deploy-suite workflow run IDs
• add /api/compatibility/compare to download deploy-suite-report artifacts and group assertion-level changes
• default the baseline input from the latest ingested main deploy-suite run
• require a Worker-side GITHUB_TOKEN because GitHub artifact archive downloads return 401 without authentication
• list public run artifacts without auth so an under-scoped token cannot break the public artifact-listing step
• polish the comparison panel with a clearer control layout, visible Compare runs button, reset-baseline affordance, and clearer result cards

Tests

• vp check apps/web/app/api/compatibility/compare/route.ts apps/web/app/compatibility/deploy-suite-compare.tsx apps/web/app/compatibility/page.tsx apps/web/app/lib/db/client.ts apps/web/worker/index.ts apps/web/wrangler.jsonc tests/web-compatibility-compare.test.ts tests/web-compatibility-failures.test.ts
• vp check apps/web/app/compatibility/deploy-suite-compare.tsx apps/web/app/compatibility/page.tsx
• vp check apps/web/app/api/compatibility/compare/route.ts tests/web-compatibility-compare.test.ts
• vp test run tests/web-compatibility-failures.test.ts tests/web-compatibility-compare.test.ts
• vp run @apps/web#build:vinext
• local browser smoke of /compatibility comparison panel

Note: local web build warned that COMPAT_INGEST_SECRET and GITHUB_TOKEN are not configured, which is expected in this worktree.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@vinext/cloudflare@2399

npm i https://pkg.pr.new/vinext@2399

commit: 37e69d8

[github-actions]

Example	Preview	Production	Original
app-router-cloudflare	preview	production
pages-router-cloudflare	preview	production
app-router-playground	preview	production	original
realworld-api-rest	preview	production
nextra-docs-template	preview	production
benchmarks	preview	production
hackernews	preview	production	original
workers-cache	preview	production
web	preview	production

[github-actions]

Performance benchmarks

Compared 37e69d8 against base 4a88a9c using alternating same-runner rounds. Next.js was unchanged and skipped.

0 improved · 0 regressed · 6 within ±1.5%

Scenario	Framework	Baseline	Current	Change
Client bundle size (gzip)	vinext	124.0 KB	124.0 KB	⚫ +0.0%
Client entry size (gzip)	vinext	118.8 KB	118.8 KB	⚫ +0.0%
Dev server cold start	vinext	2.52 s	2.52 s	⚫ -0.0%
Production build time	vinext	3.03 s	3.02 s	⚫ -0.5%
RSC entry closure size (gzip)	vinext	95.2 KB	95.2 KB	⚫ +0.0%
Server bundle size (gzip)	vinext	161.4 KB	161.4 KB	⚫ +0.0%

View detailed results and traces

_{🟢 improvement · 🔴 regression · ⚫ change below 1.5% · paired base/head}