ci: skip image rebuild on docs/example-only changes (paths-ignore)

Tag pushes (v*) bypass path filters, so releases always build.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitea/workflows/build-image.yml

@@ -19,8 +19,22 @@ on:
   push:
     branches: [main]
     tags: ["v*"]
+    # Docs/example-only changes don't change the image — skip the rebuild.
+    # (Path filters are not applied to tag pushes, so `v*` releases always build.)
+    paths-ignore:
+      - "**.md"
+      - "examples/**"
+      - "LICENSE"
+      - ".gitignore"
+      - ".dockerignore"
   pull_request:
     types: [opened, synchronize, reopened]
+    paths-ignore:
+      - "**.md"
+      - "examples/**"
+      - "LICENSE"
+      - ".gitignore"
+      - ".dockerignore"
   workflow_dispatch: {}
 
 concurrency: