Add web bundle size budgets with explicit acceptance

[markmur]

Add configurable bundle-size budgets, starting with a 35 KiB soft limit and 50 KiB hard limit for all shipped web JavaScript (currently dist/index.js). Each budget explicitly selects its measurement: raw or gzip JavaScript, the whole compressed package, or an exact file’s uncompressed size inside the package. The PR report displays each budget’s scope.

A growing bundle above its soft limit requires a repository writer to comment /accept-size web <reason>. Acceptance records an independent size cap for each breached metric; later growth, a newly breached metric, or a changed measurement scope requires fresh acceptance. Hard-limit increases require a reviewed budget-file change. Unchanged or smaller bundles already over budget pass.

The shared evaluator supports platform-specific metrics and combines them in one Size budgets check. PR builds upload measurements with read-only permissions; a trusted default-branch workflow validates comment permissions and updates the report and check.

The publisher becomes available when this workflow reaches main. Then Size budgets should be added to the repository’s required checks alongside CI Required.

Stack

• Compact protocol metadata and streamline telemetry #861
• Add web bundle size budgets with explicit acceptance #864
• Enable full minification for the web library bundle #862

[github-actions]

Protocol — Coverage Report

Lines	Statements	Branches	Functions
	93.49% (158/169)	89.16% (107/120)	90.9% (30/33)

[github-actions]

Web — Coverage Report

Lines	Statements	Branches	Functions
	95.16% (374/393)	84.32% (199/236)	97.08% (100/103)

[github-actions]

React Native — Coverage Report

Lines	Statements	Branches	Functions
	90.97% (363/399)	87.29% (213/244)	100% (92/92)