Refactor CI skip check to use a single pattern

- Simplify the CI workflow by consolidating the skip check for both branch names and commit messages to a single case-insensitive pattern: @skipci.
- Remove the previous multiple pattern checks to streamline the logic and improve readability.
- Ensure that the CI process can be effectively skipped based on the new pattern, enhancing overall efficiency.

.gitea/workflows/ci.yml

@@ -21,45 +21,36 @@ jobs:
       - name: Check if CI should be skipped
         id: check
         run: |
-          # Centralized skip patterns - add more here as needed
-          SKIP_PATTERNS="skip-ci,no-ci,skip ci,[skip ci],[ci skip]"
-          
+          # Simple skip pattern: @skipci (case-insensitive)
+          # Works in branch names and commit messages
+          SKIP_PATTERN="@skipci"
+
           # Get branch name (works for both push and PR)
-          # For PRs, GITHUB_HEAD_REF contains the branch name
           BRANCH_NAME="${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}"
-          
+
           # Get commit message (works for both push and PR)
-          # Try multiple sources for commit message
           COMMIT_MSG="${GITHUB_EVENT_HEAD_COMMIT_MESSAGE:-}"
           if [ -z "$COMMIT_MSG" ]; then
-            # For PRs, try pull request head commit
             COMMIT_MSG="${GITHUB_EVENT_PULL_REQUEST_HEAD_COMMIT_MESSAGE:-}"
           fi
           if [ -z "$COMMIT_MSG" ]; then
-            # Fallback: try to get from git log (requires checkout)
             COMMIT_MSG=$(git log -1 --pretty=%B 2>/dev/null || echo "")
           fi
-          
+
           SKIP=0
-          
+
           # Check branch name (case-insensitive)
-          for pattern in $(echo $SKIP_PATTERNS | tr ',' ' '); do
-            if echo "$BRANCH_NAME" | grep -qi "$pattern"; then
-              echo "Skipping CI: branch name contains '$pattern'"
-              SKIP=1
-              break
-            fi
-          done
-          
+          if echo "$BRANCH_NAME" | grep -qiF "$SKIP_PATTERN"; then
+            echo "Skipping CI: branch name contains '$SKIP_PATTERN'"
+            SKIP=1
+          fi
+
           # Check commit message (case-insensitive)
           if [ $SKIP -eq 0 ] && [ -n "$COMMIT_MSG" ]; then
-            for pattern in $(echo $SKIP_PATTERNS | tr ',' ' '); do
-              if echo "$COMMIT_MSG" | grep -qi "$pattern"; then
-                echo "Skipping CI: commit message contains '$pattern'"
-                SKIP=1
-                break
-              fi
-            done
+            if echo "$COMMIT_MSG" | grep -qiF "$SKIP_PATTERN"; then
+              echo "Skipping CI: commit message contains '$SKIP_PATTERN'"
+              SKIP=1
+            fi
           fi
           
           echo "skip=$SKIP" >> $GITHUB_OUTPUT