- npm run coverage runs the full suite under c8
- Wire inline source maps into the esbuild test bundles
- Redirect bundles into repo (.test-bundles) under coverage so c8
processes them; cleaned automatically after the run
- Fix esbuild->v8-to-istanbul source path remap (tests/coverage-sourcemap.js)
- .c8rc.json, .gitignore, dev-dep c8
Note: statement/function totals are degenerate under esbuild bundling;
branch coverage + HTML report are the reliable signals.
Change-Id: I880f5ee1e9a8e5368e27a8e274825f917d972269
