Refactor GitHub Actions to use reusable workflows

- Convert build.yml to reusable workflow with workflow_call trigger
- Convert release.yml to reusable workflow with should_release input
- Add main.yml to orchestrate build and release in same runner instance
- Maintain sequential execution: release only after successful build
- Preserve conditional release logic for [release] commits on master

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: pditommaso

.github/workflows/build.yml

@@ -1,12 +1,7 @@
 name: Gradle Build
 
 on:
-  push:
-    branches:
-      - 'master'
-  pull_request:
-    types: [opened, reopened, synchronize]
-  workflow_dispatch:
+  workflow_call:
 
 jobs:
   build:

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+name: Build and Release
+
+on:
+  push:
+    branches:
+      - 'master'
+  pull_request:
+    types: [opened, reopened, synchronize]
+  workflow_dispatch:
+
+jobs:
+  build:
+    uses: ./.github/workflows/build.yml
+
+  release:
+    needs: build
+    if: github.ref == 'refs/heads/master' && contains(github.event.head_commit.message, '[release]')
+    uses: ./.github/workflows/release.yml
+    with:
+      should_release: true
+    secrets: inherit

.github/workflows/release.yml

@@ -1,12 +1,16 @@
+name: Release
+
 on:
-  workflow_run:
-    workflows: ["Gradle Build"]
-    types: [completed]
-    branches: [ master ]
+  workflow_call:
+    inputs:
+      should_release:
+        required: true
+        type: boolean
+        description: 'Whether to perform the release'
 
 jobs:
   release:
-    if: github.event.workflow_run.conclusion == 'success' && contains(github.event.workflow_run.head_commit.message, '[release]')
+    if: ${{ inputs.should_release }}
     runs-on: ubuntu-latest
 
     steps: