feat: add direct pull request trigger to artifact comment workflow

Enables the workflow to run directly on pull request events (opened, synchronize, reopened) in addition to the existing workflow_run and manual dispatch triggers.

Provides immediate status updates in PR checks and improves user experience by showing workflow progress directly in the pull request interface rather than only after completion of upstream workflows.

.github/workflows/artifact-comment.yml

@@ -6,6 +6,8 @@ concurrency:
 
 on:
   workflow_dispatch: # Allow manual testing
+  pull_request: # Show in PR checks and provide status updates
+    types: [opened, synchronize, reopened]
   workflow_run:
     workflows:
       - "🤖 Android APK Build (Phone + TV)"
@@ -16,7 +18,7 @@ on:
 
 jobs:
   comment-artifacts:
-    if: github.event_name == 'workflow_dispatch' || (github.event_name == 'workflow_run' && github.event.workflow_run.event == 'pull_request')
+    if: github.event_name == 'workflow_dispatch' || github.event_name == 'pull_request' || (github.event_name == 'workflow_run' && github.event.workflow_run.event == 'pull_request')
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -28,7 +30,7 @@ jobs:
         uses: actions/github-script@v8
         with:
           script: |
-            // Handle both workflow_run and manual dispatch events
+            // Handle workflow_run, pull_request, and manual dispatch events
             let pr;
 
             if (context.eventName === 'workflow_run') {
@@ -45,6 +47,10 @@ jobs:
               }
               pr = pullRequests[0];
               
+            } else if (context.eventName === 'pull_request') {
+              // Direct PR event
+              pr = context.payload.pull_request;
+              
             } else if (context.eventName === 'workflow_dispatch') {
               // Get current PR for manual testing
               const prNumber = context.payload.pull_request?.number || 1101;