Measured on run 35535225637 (push to main, caches warm). The critical path
was the browser job at 263s plus an 11s deploy; everything else finished
inside it. Its decomposition: harness lint 37s, Playwright browser download
50s, `./harness/build.sh` 110s, `npx playwright test` 50s.
Three wasm-pack builds ran in that 110s, and two of them — the client and
the worker bundle — were the same two `pages-build` ran in its own 68s step,
in a parallel job with a separate rust-cache key (`add-job-id-key` defaults
on). Same work, twice per run.
- One `build` job now runs `./harness/build.sh` (all three bundles plus the
`harness/serve` tree) and then `./web/assemble.sh site $GITHUB_SHA` from
the pkg dirs it just produced. It uploads `harness/serve`, the two raw
bundles, and the Pages artifact. `pages-build` is folded into it.
- `browser` downloads `harness/serve` whole and needs no Rust toolchain and
no wasm-pack. Downloading the tree rather than reassembling it keeps one
answer to "what does the harness serve" (improvise-vvl3): `harness/build.sh`.
Verified locally that the two assemblies differ in exactly the four
cache-bust-stamped files and nothing else — the .wasm bytes are identical.
- `harness-lint` is its own job. It gated nothing the harness needs and cost
37s of the critical path, and `cargo fmt --all` run from inside
`harness/opfs-contract` formats the WHOLE outer workspace (114 files,
measured) despite that crate's empty `[workspace]` table, so a rustfmt
violation anywhere in the repo failed the *Browser harness* job.
`-p opfs-contract` scopes it to the one file it is about.
- Playwright's browser download is cached on the resolved package version.
- rust-cache in `build` and `harness-lint` covers `harness/opfs-contract`'s
own target dir, which the default single-workspace config never did.
No gate is weakened. `pages-deploy` still needs every check that could
previously fail it; `harness-lint` is named explicitly because it used to be
a step inside `browser`. `kb`, `wasm` and `test` gain no dependency on
`build` — none of them consumes an artifact.
On improvise-864a: the gap between the Pages artifact upload and the deploy
narrows from ~182s to ~115s on this run's shape, so the window in which a
superseding run can expire it is smaller. The race is not closed, and not
widened.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Edward Langley
3c9668f9e2