ci: run vscode unit tests on packages/ui and packages/kilo-ui changes

These packages feed directly into the extension webview. An upstream opencode
merge that only touches packages/ui or packages/kilo-ui would previously skip
the kilo-vscode unit tests entirely, allowing contract regressions to merge
undetected.

The unit tests (bun test tests/unit/) are pure — no CLI binary needed — so
adding these paths has no performance cost.

.github/workflows/test-vscode.yml

@@ -6,9 +6,13 @@ on:
       - dev
     paths:
       - "packages/kilo-vscode/**"
+      - "packages/ui/**"
+      - "packages/kilo-ui/**"
   pull_request:
     paths:
       - "packages/kilo-vscode/**"
+      - "packages/ui/**"
+      - "packages/kilo-ui/**"
   workflow_dispatch:
 
 jobs: