ci: cut per-job setup time

.github/actions/setup-ci-deps/action.yml

@@ -1,57 +1,30 @@
 name: Setup CI dependencies
-description: Install Vite+ dependencies using a Blacksmith sticky pnpm store on Linux.
-inputs:
-  run-install:
-    description: Install arguments forwarded to setup-vp.
-    required: false
-    default: "true"
+description: Install Vite+ and the workspace dependencies from cache.
 runs:
   using: composite
   steps:
-    # Cache packages only; node_modules and prepare scripts stay fresh each job.
-    - name: Mount pnpm store
-      id: sticky
-      continue-on-error: true
-      uses: useblacksmith/stickydisk@v1
-      with:
-        key: ${{ github.repository }}-ci-pnpm-v1-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('pnpm-lock.yaml', 'patches/**') }}
-        path: ${{ runner.temp }}/t3-ci-pnpm-store
-        # Each job gets a private clone. PRs must not publish into main's snapshot.
-        commit: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
-
-    - name: Check pnpm store mount
-      id: store
+    # setup-vp reuses an installed exact version, so restoring its home skips the
+    # installer download on every job.
+    - name: Resolve Vite+ version
+      id: vp
       shell: bash
-      env:
-        STICKY_OUTCOME: ${{ steps.sticky.outcome }}
-        STICKY_STORE_PATH: ${{ runner.temp }}/t3-ci-pnpm-store
-        PUBLISHES: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
       run: |
-        # stickydisk can return success after falling back to an ordinary directory.
-        # An empty disk (no pnpm `v*` store from a main snapshot yet) only helps the
-        # main push that fills it; everyone else keeps the setup-vp cache.
-        if [[ "$STICKY_OUTCOME" == success ]] && mountpoint -q "$STICKY_STORE_PATH" && test -w "$STICKY_STORE_PATH" \
-          && { [[ "$PUBLISHES" == true ]] || compgen -G "$STICKY_STORE_PATH/v*" > /dev/null; }; then
-          echo 'mounted=true' >> "$GITHUB_OUTPUT"
-        else
-          echo 'mounted=false' >> "$GITHUB_OUTPUT"
-          echo '::warning::Sticky pnpm store unavailable or empty; using setup-vp dependency cache.'
-        fi
+        echo "version=$(sed -nE 's/^  vite-plus: ([0-9][^ ]*)$/\1/p' pnpm-workspace.yaml)" >> "$GITHUB_OUTPUT"
 
-    - name: Setup Vite+ with sticky store
-      if: steps.store.outputs.mounted == 'true'
-      uses: voidzero-dev/setup-vp@v1
-      env:
-        pnpm_config_store_dir: ${{ runner.temp }}/t3-ci-pnpm-store
+    - name: Cache Vite+
+      if: steps.vp.outputs.version != ''
+      uses: actions/cache@v6
       with:
-        node-version-file: package.json
-        cache: false
-        run-install: ${{ inputs.run-install }}
+        path: ~/.vite-plus
+        key: vite-plus-home-v1-${{ runner.os }}-${{ runner.arch }}-${{ steps.vp.outputs.version }}
 
-    - name: Setup Vite+ with cache fallback
-      if: steps.store.outputs.mounted != 'true'
+    # The pnpm store stays a cache tarball on the runner's own disk. A store on a
+    # Blacksmith sticky disk mounts in under a second, but pnpm then copies every
+    # package across filesystems instead of hard-linking it: install took 28-49s
+    # against 9s plus an 11s restore.
+    - name: Setup Vite+
       uses: voidzero-dev/setup-vp@v1
       with:
         node-version-file: package.json
         cache: true
-        run-install: ${{ inputs.run-install }}
+        run-install: true

.github/workflows/ci.yml

@@ -69,6 +69,7 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
       - name: Reject repository-owned PR assets
@@ -105,6 +106,7 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
       - uses: ./.github/actions/setup-apt-mirrors
@@ -185,6 +187,7 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
       # Blacksmith boots GitHub's Ubuntu runner image (gcc is usually present),
@@ -256,6 +259,7 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
       - name: Setup Vite+
@@ -279,7 +283,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        shard: [1, 2, 3, 4, 5, 6]
+        shard: [1, 2, 3, 4, 5, 6, 7, 8]
     steps:
       # Depth 2 brings the base commit the change is diffed against.
       - name: Checkout
@@ -289,6 +293,7 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
       - name: Detect affected jobs
@@ -368,22 +373,6 @@ jobs:
           if-no-files-found: ignore
           retention-days: 30
 
-  transfer-report:
-    name: Transfer report artifact
-    needs: [changes, test_server]
-    if: needs.changes.outputs.test_server != 'false'
-    # On Blacksmith like every other job here: the GitHub-hosted queue is shared
-    # with the PR bots and can leave this job waiting until it is abandoned,
-    # which fails `Check` on an otherwise green run.
-    runs-on: blacksmith-2vcpu-ubuntu-2404
-    timeout-minutes: 5
-    steps:
-      - name: Require transfer measurements
-        uses: actions/download-artifact@v8
-        with:
-          name: thread-transfer-results
-          path: ${{ runner.temp }}/thread-transfer
-
   # Split out of Check and Test: both paid ~7-9s to install a Rust toolchain
   # for checks that take under 3s, on the critical path of every PR.
   rust:
@@ -399,6 +388,7 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
       - name: Setup Rust
@@ -461,16 +451,13 @@ jobs:
           sparse-checkout: |
             /*
             !/.repos/
+            !/apps/mobile/modules/t3-terminal/Vendor/**/*.a
           sparse-checkout-cone-mode: false
 
+      # A full install: a filtered one that misses the cache first saves its
+      # partial store under the shared lockfile key for every later job.
       - name: Setup Vite+
-        uses: voidzero-dev/setup-vp@v1
-        with:
-          node-version-file: package.json
-          cache: true
-          run-install: |
-            args:
-              - --filter=@t3tools/scripts...
+        uses: ./.github/actions/setup-ci-deps
 
       - name: Exercise release-only workflow steps
         run: node scripts/release-smoke.ts
@@ -491,7 +478,6 @@ jobs:
         test,
         test_web,
         test_server,
-        transfer-report,
         rust,
         mobile_native_static_analysis,
         release_smoke,
@@ -505,11 +491,20 @@ jobs:
         run: |
           echo "$RESULTS" | jq -r 'to_entries[] | "\(.key): \(.value.result)"'
           # A job may skip only when `changes` said every gate it represents was
-          # not needed. Gates are keyed by job name, except merged Build, the
-          # macOS lint, and the transfer report.
+          # not needed. Gates are keyed by job name, except merged Build and the
+          # macOS lint.
           echo "$RESULTS" | jq -e '.changes.outputs as $gates
-            | {build: ["build", "typecheck"], mobile_native_static_analysis: ["mobile_native"], "transfer-report": ["test_server"]} as $renamed
+            | {build: ["build", "typecheck"], mobile_native_static_analysis: ["mobile_native"]} as $renamed
             | all(to_entries[];
                 .value.result == "success"
                 or (.value.result == "skipped"
                   and (($renamed[.key] // [.key]) | all(.[]; $gates[.] == "false"))))' > /dev/null
+
+      # thread-transfer-report.yml reads this artifact after CI, so a run whose
+      # server tests ran must have produced it.
+      - name: Require transfer measurements
+        if: needs.test_server.result == 'success' && needs.changes.outputs.test_server != 'false'
+        uses: actions/download-artifact@v8
+        with:
+          name: thread-transfer-results
+          path: ${{ runner.temp }}/thread-transfer