chore: improve workflow job names for clarity

- 'Check ui' → 'Test UI' (consistent with 'Test backend')
- 'Docker' → 'Build and push images' (more descriptive of what it does)

Job IDs remain unchanged (test-backend, check-ui, docker) for stability.

.gitea/workflows/release.yaml

@@ -32,7 +32,7 @@ jobs:
 
   # ── ui: type-check & build ────────────────────────────────────────────────────
   check-ui:
-    name: Check ui
+    name: Test UI
     runs-on: ubuntu-latest
     defaults:
       run:
@@ -57,7 +57,7 @@ jobs:
 
   # ── docker: build + push all images via docker bake ──────────────────────────
   docker:
-    name: Docker
+    name: Build and push images
     runs-on: ubuntu-latest
     needs: [test-backend, check-ui]
     steps: