skip app-related CI jobs for doc/blog PRs (#3704)

Co-authored-by: angiejones <jones.angie@gmail.com>

.github/workflows/ci.yml

@@ -13,9 +13,30 @@ on:
 name: CI
 
 jobs:
+  changes:
+    runs-on: ubuntu-latest
+    outputs:
+      docs-only: ${{ steps.filter.outputs.docs-only }}
+      code: ${{ steps.filter.outputs.code }}
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
+      
+      - name: Check for file changes
+        uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # pin@v3
+        id: filter
+        with:
+          filters: |
+            docs-only:
+              - 'documentation/**'
+            code:
+              - '!documentation/**'
+
   rust-format:
     name: Check Rust Code Format
     runs-on: ubuntu-latest
+    needs: changes
+    if: needs.changes.outputs.code == 'true' || github.event_name != 'pull_request'
     steps:
       - name: Checkout Code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
@@ -26,6 +47,8 @@ jobs:
   rust-build-and-test:
     name: Build and Test Rust Project
     runs-on: goose
+    needs: changes
+    if: needs.changes.outputs.code == 'true' || github.event_name != 'pull_request'
     steps:
       - name: Checkout Code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
@@ -80,6 +103,8 @@ jobs:
   desktop-lint:
     name: Lint Electron Desktop App
     runs-on: macos-latest
+    needs: changes
+    if: needs.changes.outputs.code == 'true' || github.event_name != 'pull_request'
     steps:
       - name: Checkout Code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
@@ -95,6 +120,7 @@ jobs:
   # Faster Desktop App build for PRs only
   bundle-desktop-unsigned:
     uses: ./.github/workflows/bundle-desktop.yml
-    if: github.event_name == 'pull_request' || github.event_name == 'merge_group'
+    needs: changes
+    if: (github.event_name == 'pull_request' || github.event_name == 'merge_group') && (needs.changes.outputs.code == 'true' || github.event_name != 'pull_request')
     with:
       signing: false