Fix size deltas report infrastructure configuration

.github/workflows/compile-examples.yml

@@ -20,12 +20,8 @@ on:
   workflow_dispatch:
   repository_dispatch:
 
-env:
-  # It's convenient to set variables for values used multiple times in the workflow.
-  SKETCHES_REPORTS_PATH: sketches-reports
-
 jobs:
-  compile:
+  build:
     name: ${{ matrix.board.fqbn }}
     runs-on: ubuntu-latest
 
@@ -39,6 +35,7 @@ jobs:
       UNIVERSAL_SKETCH_PATHS: |
         - examples/SHA1
         - examples/SHA256
+      SKETCHES_REPORTS_PATH: sketches-reports
 
     strategy:
       fail-fast: false
@@ -98,21 +95,3 @@ jobs:
           if-no-files-found: error
           path: ${{ env.SKETCHES_REPORTS_PATH }}
           name: sketches-report-${{ matrix.board.artifact-name-suffix }}
-
-  # When using a matrix to compile for multiple boards, it's necessary to use a separate job for the deltas report
-  report:
-    needs: compile # Wait for the compile job to finish to get the data for the report
-    if: github.event_name == 'pull_request' # Only run the job when the workflow is triggered by a pull request
-    runs-on: ubuntu-latest
-
-    steps:
-      # This step is needed to get the size data produced by the compile jobs
-      - name: Download sketches reports artifacts
-        uses: actions/download-artifact@v4
-        with:
-          # All workflow artifacts will be downloaded to this location.
-          path: ${{ env.SKETCHES_REPORTS_PATH }}
-
-      - uses: arduino/report-size-deltas@v1
-        with:
-          sketches-reports-source: ${{ env.SKETCHES_REPORTS_PATH }}

.github/workflows/report-size-deltas.yml

@@ -0,0 +1,25 @@
+name: Report Size Deltas
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/report-size-deltas.yml"
+  schedule:
+    # Run at the minimum interval allowed by GitHub Actions.
+    # Note: GitHub Actions periodically has outages which result in workflow failures.
+    # In this event, the workflows will start passing again once the service recovers.
+    - cron: "*/5 * * * *"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  report:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Comment size deltas reports to PRs
+        uses: arduino/report-size-deltas@v1
+        with:
+          # Regex matching the names of the workflow artifacts created by the "Compile Examples" workflow
+          sketches-reports-source: ^sketches-report-.+