ci(build-images): trigger on komodo/** too

A push only builds if it touches a path in the filter. The first stage commit was
komodo-only, so no :stage image was ever built. Add komodo/** so IaC/Stack changes
(and a komodo-only push to stage) also build+check — a deploy-config change gets the
same sanity pass before it reaches a booth. This commit itself touches the workflow
file (already filtered), so it triggers the build that produces the first :stage image.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

.gitea/workflows/build-images.yml

@@ -21,6 +21,10 @@ on:
       - 'docker-compose*.yml'
       - '.dockerignore'
       - '.gitea/workflows/build-images.yml'
+      # Deploy/IaC changes (compose above, plus the Komodo Stack defs) also rebuild — so a
+      # promotion or a Stack tweak gets the same build+checks sanity pass before it reaches a
+      # booth, and a komodo-only push to `stage` still produces a :stage image.
+      - 'komodo/**'
   workflow_dispatch:
 
 env: