ci: Add reusable setup action and copilot-setup-steps.yml workflow (#115)

* Initial plan

* Create copilot-setup-steps.yml for agent environment setup

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* Move copilot-setup-steps.yml to workflows and use GitHub Actions format

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* Use consistent action versions and working-directory parameter

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* Remove unnecessary comments and use dart install dpk with PATH setup

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* Restrict push trigger to main branch only

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* Update all workflows to use dart install dpk with PATH setup

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* Create reusable setup-luthor action and update all workflows

Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>

* chore: Regenerate pubspec.lock

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: exaby73 <50555895+exaby73@users.noreply.github.com>
Co-authored-by: Nabeel Parkar <nabeel@ex3.dev>

Author: Copilot

.github/actions/setup-luthor/action.yml

@@ -0,0 +1,23 @@
+name: 'Setup Luthor Development Environment'
+description: 'Sets up Dart SDK, dpk, and project dependencies for Luthor monorepo'
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Set up Dart SDK
+      uses: dart-lang/setup-dart@v1
+
+    - name: Install dpk (Dartpack monorepo CLI)
+      shell: bash
+      run: |
+        dart install dpk
+        echo "$HOME/.local/state/Dart/install/bin" >> $GITHUB_PATH
+
+    - name: Install project dependencies
+      shell: bash
+      run: dpk get
+
+    - name: Generate code for luthor_generator example
+      shell: bash
+      working-directory: packages/luthor_generator/example
+      run: dart run build_runner build -d

.github/workflows/analyze.yml

@@ -11,9 +11,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: dart-lang/setup-dart@v1
-      - run: dart pub global activate dpk
-      - run: dpk get
-      - name: Generate code in example
-        run: (cd packages/luthor_generator/example && dart run build_runner build -d)
+      - uses: ./.github/actions/setup-luthor
       - run: dpk run analyze

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,26 @@
+name: "Copilot Setup Steps"
+
+# Automatically run the setup steps when they are changed to allow for easy validation, and
+# allow manual testing through the repository's "Actions" tab
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+  pull_request:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+
+jobs:
+  copilot-setup-steps:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup Luthor
+        uses: ./.github/actions/setup-luthor

.github/workflows/format.yml

@@ -11,7 +11,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: dart-lang/setup-dart@v1
-      - run: dart pub global activate dpk
-      - run: dpk get
+      - uses: ./.github/actions/setup-luthor
       - run: dpk run format

.github/workflows/unit_tests.yml

@@ -11,7 +11,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: dart-lang/setup-dart@v1
-      - run: dart pub global activate dpk
-      - run: dpk get
+      - uses: ./.github/actions/setup-luthor
       - run: dpk run test

packages/luthor_generator/pubspec.yaml

@@ -9,14 +9,14 @@ environment:
   sdk: '>=3.8.0 <4.0.0'
 
 dependencies:
-  analyzer: ^8.0.0
-  build: ^4.0.0
+  analyzer: ^8.0.0 # Configured via catalog
+  build: ^4.0.0 # Configured via catalog
   collection: ^1.18.0
   dart_mappable: ^4.3.0
   freezed_annotation: ^3.0.0
   json_annotation: ^4.8.1
   luthor: ^0.15.0
-  source_gen: ^4.0.0
+  source_gen: ^4.0.0 # Configured via catalog
 
 dev_dependencies:
   lint: ^2.3.0