fix: Remove SHA-based Docker tags causing invalid format errors

- Remove type=sha tags that were producing invalid formats like ':-f0d0654'
- Keep latest/dev tags for branches and semver tags for releases
- SHA is still tracked via image digest and labels

.github/workflows/docker-build.yml

@@ -60,8 +60,6 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             # Tag major from git tags (v1.2.3 → 1)
             type=semver,pattern={{major}}
-            # Tag with git SHA for tracking (first 7 characters)
-            type=sha,prefix={{branch}}-,format=short
 
       # Step 6: Build the frontend first
       - name: 🎨 Build frontend