diag: add pull_request trigger

.gitea/workflows/diag-ref-test.yml

@@ -0,0 +1,38 @@
+name: Ref Env Diagnostic
+on:
+  workflow_dispatch:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: ['**']
+
+jobs:
+  diag-ref:
+    name: Diagnostic Ref Variables
+    runs-on: ci-l2
+    steps:
+    - name: Print all ref variables
+      shell: sh
+      run: |
+        echo "=== GitHub/Gitea Ref Variables ==="
+        echo "GITHUB_REF=$GITHUB_REF"
+        echo "GITHUB_REF_NAME=$GITHUB_REF_NAME"
+        echo "GITHUB_REF_TYPE=$GITHUB_REF_TYPE"
+        echo "GITHUB_HEAD_REF=$GITHUB_HEAD_REF"
+        echo "GITHUB_BASE_REF=$GITHUB_BASE_REF"
+        echo "GITHUB_SHA=$GITHUB_SHA"
+        echo "GITHUB_EVENT_NAME=$GITHUB_EVENT_NAME"
+        echo "GITHUB_RUN_ID=$GITHUB_RUN_ID"
+        echo "=== Done ==="
+    - name: Print expression results
+      shell: sh
+      env:
+        EXPR_REF_NAME: ${{ github.ref_name }}
+        EXPR_REF: ${{ github.ref }}
+        EXPR_GITEA_REF: ${{ gitea.ref }}
+      run: |
+        echo "=== Expression Results ==="
+        echo "github.ref_name (expr) = $EXPR_REF_NAME"
+        echo "github.ref (expr) = $EXPR_REF"
+        echo "gitea.ref (expr) = $EXPR_GITEA_REF"
+        echo "=== Done ==="