ci: migrate CI runners to Blacksmith#37
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Move GitHub-hosted runners to like-for-like Blacksmith sizes (2c->2vcpu, 4c->4vcpu, 8c->8vcpu). Jobs run on Blacksmith once the Blacksmith GitHub App has access to this repo (org-level setting). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
surface-lint runs actionlint, which flags the new blacksmith-* runner labels as unknown. Declare them under self-hosted-runner.labels (keeping the existing custom labels). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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## What Reverts the covgate **build-cache pre-warm** feature in its entirety. covgate no longer pre-warms the Go build cache before its parallel coverage runs. Reverts, in order (newest first): - #36 `perf(covgate): instrument the build-cache pre-warm` (`794e725`) - #35 `feat(covgate): report build-cache pre-warm duration` (`6a0cc47`) - #34 `perf(covgate): pre-warm build cache before parallel coverage runs` (`0c3c0af`) ## Why We no longer want covgate to pre-warm the build cache. The pre-warm compiled an extra artifact set that inflated the CI `gobuild-test` cache and pushed the backend repo back over the 10 GB Actions cache quota (the very regression #36 tried to walk back). Rather than keep iterating on the pre-warm, we're removing it. ## How Three `git revert` commits, preserving history/attribution. The reverted `internal/services/covgate/` and `internal/services/gocover/` files are **byte-identical** to their pre-feature state, and the feature's design doc (`plans/completed/20260624-covgate-prewarm-build-cache.md`) is removed. ## Validation - No lingering `prewarm` / `PrewarmBuild` references anywhere in `internal/`, `cmd/`, or `scripts/`. - Full `scripts/preflight.sh` passes clean: covgate coverage 94.3% across all 30 packages, gocover 92.6% (≥ 92.1% required), custom lint + gofumpt + golangci-lint + deadcode + surface-lint all green. - Clean revert with no conflicts against current `main`; unrelated later commits (#37 CI, #38 dep bumps, #39 max-param-count) required no adjustment. 🤖 Generated with [Claude Code](https://claude.com/claude-code) <!-- codesmith:footer --> --- <a href="https://app.blacksmith.sh/mirurobotics/codesmith/gotools/pr/40"><picture><source media="(prefers-color-scheme: dark)" srcset="https://pr-comments-assets.blacksmith.sh/codesmith/view-with-codesmith-dark-v2.svg"><source media="(prefers-color-scheme: light)" srcset="https://pr-comments-assets.blacksmith.sh/codesmith/view-with-codesmith-light-v2.svg"><img alt="View with Codesmith" src="https://pr-comments-assets.blacksmith.sh/codesmith/view-with-codesmith-dark-v2.svg"></picture></a> <a href="https://backend.blacksmith.sh/track/enable-autofix?expires=1785713638&installation_id=142588636&pr_number=40&repository=mirurobotics%2Fgotools&return_to=https%3A%2F%2Fgithub.com%2Fmirurobotics%2Fgotools%2Fpull%2F40&signature=00cc206a36c548207ac3606f293163ba579f08070387cbe5cc6ca77ed2f8cb48"><picture><source media="(prefers-color-scheme: dark)" srcset="https://pr-comments-assets.blacksmith.sh/codesmith/autofix-with-codesmith-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://pr-comments-assets.blacksmith.sh/codesmith/autofix-with-codesmith-light.svg"><img alt="Autofix with Codesmith" src="https://pr-comments-assets.blacksmith.sh/codesmith/autofix-with-codesmith-dark.svg"></picture></a> <sup>Need help on this PR? Tag <code>/codesmith</code> with what you need. Autofix is disabled.</sup> <!-- codesmith:autofix:disabled --> <!-- /codesmith:footer -->
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Migrate GitHub-hosted runners to like-for-like Blacksmith sizes.
runs-oninput)Note: jobs will only run on Blacksmith once the Blacksmith GitHub App has been granted access to this repo (org-level setting).
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