Speed up CI setup and coverage upload

pnpm/action-setup installs a bootstrap pnpm and then switches to the
packageManager version, about 10 s per job; npm installs it in 3 s.
setup-node took 4 s probing package managers for a cache it never
used. The pnpm store cache took 4 s to restore and 5 s to save, more
than downloading the packages costs, and the build cache no longer pays
off with TypeScript 7: pnpm install is 13-23 s without either cache
against 17-31 s with them.

The Codecov action searched the workspace and uploaded the raw V8
coverage in coverage/tmp next to lcov.info, 72 MB taking 11 s.

The version compatibility job ran tsc --build again after pnpm install
had already built everything.

Cancel superseded runs of branches and pull requests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.github/actions/pnpm-install/action.yml

@@ -1,5 +1,5 @@
 name: Install dependencies
-description: Set up pnpm and Node.js, restore caches and run pnpm install
+description: Set up pnpm and Node.js and run pnpm install
 
 inputs:
   node-version:
@@ -12,40 +12,15 @@ inputs:
 runs:
   using: composite
   steps:
-    - uses: pnpm/action-setup@v6
     - uses: actions/setup-node@v7
       with:
         node-version: ${{ inputs.node-version }}
+        package-manager-cache: false
 
-    # The lockfile is not committed, so the usual lockfile hash key does not
-    # apply. Instead a new store snapshot is saved whenever a package.json
-    # changes or a week passes, and every run restores the most recent one.
-    - id: store
-      shell: bash
-      run: |
-        echo "path=$(pnpm store path --silent)" >> "$GITHUB_OUTPUT"
-        echo "week=$(date -u +%G-%V)" >> "$GITHUB_OUTPUT"
-    - uses: actions/cache@v6
-      with:
-        path: ${{ steps.store.outputs.path }}
-        key: pnpm-store-${{ runner.os }}-${{ steps.store.outputs.week }}-${{ hashFiles('**/package.json', 'pnpm-workspace.yaml') }}
-        restore-keys: pnpm-store-${{ runner.os }}-
-
-    # The prepare scripts run tsc --build, which is incremental when its
-    # previous output is present. Every run saves its output and the next run
-    # starts from the most recent one.
-    - if: inputs.ignore-scripts != 'true'
-      uses: actions/cache@v6
-      with:
-        path: |
-          packages/*/dist
-          plugins/*/dist
-        key: build-${{ runner.os }}-${{ github.sha }}
-        restore-keys: build-${{ runner.os }}-
+    # pnpm/action-setup installs a bootstrap pnpm and then switches to the
+    # packageManager version, which takes about 10 seconds.
+    - shell: bash
+      run: npm install --global --no-audit --no-fund "$(node -p 'require("./package.json").packageManager.split("+")[0]')"
 
     - shell: bash
       run: pnpm i --no-frozen-lockfile ${{ inputs.ignore-scripts == 'true' && '--ignore-scripts' || '' }}
-    # Drop packages the restored store had but this install did not use, so
-    # the snapshot does not grow with every version bump.
-    - shell: bash
-      run: pnpm store prune

.github/workflows/lua-lint.yml

@@ -4,6 +4,10 @@ on:
   push:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref == 'refs/heads/master' && github.sha || github.ref }}
+  cancel-in-progress: true
+
 env:
   EMMYLUA_CHECK_VERSION: "0.25.1"
 

.github/workflows/node.js.yml

@@ -7,6 +7,12 @@ on:
   push:
   pull_request:
 
+# Superseded runs of a branch or pull request are cancelled. Runs on master
+# each get their own group so every commit there is tested.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref == 'refs/heads/master' && github.sha || github.ref }}
+  cancel-in-progress: true
+
 env:
   NODE_VERSION: 24.x
 
@@ -54,6 +60,8 @@ jobs:
       uses: codecov/codecov-action@v7
       with:
         files: ./coverage/lcov.info
+        # Otherwise the raw V8 coverage in coverage/tmp is uploaded as well
+        disable_search: true
         token: ${{ secrets.CODECOV_TOKEN }}
     - name: Upload test logs for debugging
       if: ${{ !cancelled() }}
@@ -87,8 +95,6 @@ jobs:
       uses: ./.github/actions/pnpm-install
       with:
         node-version: ${{ env.NODE_VERSION }}
-    - name: Build
-      run: pnpm run build
     - name: Test ${{ matrix.controller }} controller with ${{ matrix.host }} host
       run: >
         node scripts/version-compat-test.js