optimize offline workflow to require explicit labels for PR builds

- Remove default builds on PRs without labels (saves CI resources)
- Add build-default, build-demo, build-min labels for selective builds
- Remove 'skip ci' check (no longer needed with label-based approach)
- Add 'labeled' trigger to run workflow when labels are added
- Update PR template with label documentation
- Push to master/develop still runs all builds

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: sghosh23

.github/pull_request_template.md

@@ -21,6 +21,15 @@ Fixes ${ISSUE_URL}
 * [ ] I ran/applied the changes myself, in a test environment.
 * [ ] The CI job attached to this repo will test it for me.
 
+#### Offline Build CI (label-based)
+Add one or more labels to trigger offline builds:
+- `build-default` - Full production build (ansible, terraform, all packages)
+- `build-demo` - Demo/WIAB build
+- `build-min` - Minimal build (fastest, essential charts only)
+- `build-all` - Run all three builds
+
+**Note:** No builds run by default. Add a label to trigger CI.
+
 ### Tracking
 
 * [ ] I added a new entry in an appropriate subdirectory of `changelog.d`

.github/workflows/offline.yml

@@ -32,10 +32,9 @@ jobs:
   build-default:
     name: Build default profile
     if: |
-      !contains(github.event.head_commit.message, 'skip ci') &&
-      (github.event_name == 'push' ||
-       contains(github.event.pull_request.labels.*.name, 'build-all') ||
-       contains(github.event.pull_request.labels.*.name, 'build-default'))
+      github.event_name == 'push' ||
+      contains(github.event.pull_request.labels.*.name, 'build-all') ||
+      contains(github.event.pull_request.labels.*.name, 'build-default')
     runs-on:
       group: wire-server-deploy
     outputs:
@@ -119,10 +118,9 @@ jobs:
   build-demo:
     name: Build demo profile
     if: |
-      !contains(github.event.head_commit.message, 'skip ci') &&
-      (github.event_name == 'push' ||
-       contains(github.event.pull_request.labels.*.name, 'build-all') ||
-       contains(github.event.pull_request.labels.*.name, 'build-demo'))
+      github.event_name == 'push' ||
+      contains(github.event.pull_request.labels.*.name, 'build-all') ||
+      contains(github.event.pull_request.labels.*.name, 'build-demo')
     runs-on:
       group: wire-server-deploy
     steps:
@@ -181,10 +179,9 @@ jobs:
   build-min:
     name: Build min profile
     if: |
-      !contains(github.event.head_commit.message, 'skip ci') &&
-      (github.event_name == 'push' ||
-       contains(github.event.pull_request.labels.*.name, 'build-all') ||
-       contains(github.event.pull_request.labels.*.name, 'build-min'))
+      github.event_name == 'push' ||
+      contains(github.event.pull_request.labels.*.name, 'build-all') ||
+      contains(github.event.pull_request.labels.*.name, 'build-min')
     runs-on:
       group: wire-server-deploy
     steps: