chore(ci): update CI to run more less often and more efficient

.github/workflows/shellcheck.yml

@@ -1,3 +1,11 @@
+# This workflow checks shell scripts for common issues using shellcheck
+# Triggers:
+#   - Push/PR to develop with changes to .sh files
+# Checks:
+#   - All shell scripts recursively
+#   - Reports info-level severity and above
+#   - Follows sourced files with -x flag
+
 name: Lint
 
 on:
@@ -20,6 +28,13 @@ jobs:
     container:
       image: docker.io/ubuntu:24.04
     steps:
+      - id: skip_check
+        uses: fkirc/skip-duplicate-actions@v5
+        with:
+          concurrent_skipping: 'same_content_newer'
+          cancel_others: 'true'
+          skip_after_successful_duplicate: 'true'
+
       - name: Check out pull request code
         uses: actions/checkout@v5
         if: github.event_name == 'pull_request'