perf(ci): start native/CEF app builds off detect-changes, not build (re-land #395)

[goosewobbler]

Re-lands #395, which was merged but never reached main: its base was the #394 branch (ci/status-gate-and-redundant-installs), and because that branch wasn't deleted/retargeted after #394 squash-merged, merging #395 put the commit on that stale branch instead of main. So main currently still has the old needs: [detect-changes, build] + artifact downloads.

This is the exact same commit (7fc5bdfae) cherry-picked cleanly onto current main — its hunks (build-app jobs + the 6 app-build reusables) don't overlap the Dependabot CI-gating that landed on main since, which is preserved.

What (unchanged from #395)

Decouples the 20 Tauri/Dioxus/Electrobun e2e + package-test app builds from the Linux build job: drop needs: build, remove the build-artifact download (+ dead show-info step + unused build_id/artifact_size/cache_key inputs); drop --only in the Tauri package build so Turbo builds deps from source. Each leg now starts off detect-changes, in parallel with build, so the e2e/package leg start drops from build + app-build to ≈ app-build. The consuming e2e/package jobs still depend on build directly, so a JS build failure still reds CI.

Verified

• actionlint 1.7.12 clean.
• Dependabot gating preserved (detect-changes if: + ci-status guard).
• App-build reusables download artifact: 0; consumers still reference needs.build.outputs: 88; identical +24/−238 to perf(ci): start native/CEF app builds off detect-changes, not build #395.

To avoid the stale-base trap again, this targets main directly.

🤖 Generated with Claude Code

[github-actions]

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[greptile-apps]

Greptile Summary

This PR re-lands #395 (cherry-picked cleanly onto current main), decoupling the 20 Tauri/Dioxus/Electrobun app-build jobs from the Linux build job so they start in parallel off detect-changes instead of waiting for build to complete.

• All 6 app-build reusable workflows drop the build_id/artifact_size/cache_key inputs, the artifact-download step, and the "Show Build Information" step; the Tauri package-app reusable additionally removes --only from the Turbo invocation so workspace dependencies are compiled from source (remote-cache backed) rather than extracted from the downloaded archive.
• All 20 build-*-{e2e,package}-app-* jobs in ci.yml drop build from needs; the downstream e2e and package-test jobs retain needs: [detect-changes, build, build-<app>-*], so a JS build failure still blocks all tests.

Confidence Score: 5/5

Safe to merge — the dependency-graph change is internally consistent and all test/package jobs still block on build finishing.

Every app-build job now runs in parallel with build, but the consuming test and package jobs retain needs: [detect-changes, build, build-<app>-*], so build failures still red CI. The --only removal in the Tauri package-app reusable is the only behavioural difference beyond the removed download step, and it is intentional: Turbo will now build workspace deps from its remote cache instead of from the extracted artifact. This is the exact same commit as #395, which was already reviewed and merged (just targeted the wrong branch), reducing re-review risk further.

No files require special attention. All 6 reusable workflows and ci.yml are changed consistently.

Important Files Changed

Filename	Overview
.github/workflows/ci.yml	Removes build from needs for all 20 app-build jobs, dropping the 3 forwarded build outputs; downstream test/package jobs still gate on build directly — parallelism gain is clean and gating is intact.
.github/workflows/_ci-build-tauri-package-app.reusable.yml	Removes the 3 inherited inputs, artifact-download step, and drops --only from the Turbo invocation so workspace deps are built from source (remote-cache backed) instead of from the downloaded dist/.
.github/workflows/_ci-build-tauri-e2e-app.reusable.yml	Removes the 3 forwarded inputs, artifact-download step, and Show Build Information step; build logic is otherwise unchanged.
.github/workflows/_ci-build-dioxus-e2e-app.reusable.yml	Removes the 3 forwarded inputs, artifact-download step, and Show Build Information step; the explicit pnpm --filter @wdio/dioxus-bridge build step remains, so the JS bridge is still built from source.
.github/workflows/_ci-build-dioxus-package-app.reusable.yml	Removes the 3 forwarded inputs and artifact-download step; workspace deps previously supplied via the downloaded archive must now be resolved via Turbo/pnpm from source.
.github/workflows/_ci-build-electrobun-e2e-app.reusable.yml	Removes the 3 forwarded inputs, artifact-download step, and Show Build Information step; the CEF/Bun build logic is unchanged.
.github/workflows/_ci-build-electrobun-package-app.reusable.yml	Removes the 3 forwarded inputs, artifact-download step, and Show Build Information step; CEF/Bun build is unaffected.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[push / PR] --> B[detect-changes]
    B --> C[build Linux]
    B --> D[build-tauri-e2e-app-*]
    B --> E[build-dioxus-e2e-app-*]
    B --> F[build-electrobun-e2e-app-*]
    B --> G[build-tauri-package-app-*]
    B --> H[build-dioxus-package-app-*]
    B --> I[build-electrobun-package-app-*]
    C --> J[e2e-tauri-* / package-tauri-*]
    D --> J
    C --> K[e2e-dioxus-* / package-dioxus-*]
    E --> K
    C --> L[e2e-electrobun-* / package-electrobun-*]
    F --> L
    G --> J
    H --> K
    I --> L

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_{Reviews (1): Last reviewed commit: "perf(ci): start native/CEF app builds of..." | Re-trigger Greptile}