ci: run gui tests in cross-platform CI

Adds a gui package test script and a CI step so gui/tests (currently the
Auto-connect SSR regression suite, #287) executes on all three runner
OSes. Closes the local-only coverage gap flagged in the bucket-2
readiness review.

Author: lidge-jun

.github/workflows/ci.yml

@@ -72,6 +72,9 @@ jobs:
       - name: Test
         run: bun test --isolate tests
 
+      - name: GUI tests
+        run: cd gui && bun test tests
+
       - name: Privacy scan
         run: bun run privacy:scan
 

gui/package.json

@@ -7,6 +7,7 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
+    "test": "bun test tests",
     "lint:i18n": "eslint src/pages src/components src/App.tsx src/ui.tsx",
     "doctor": "npx --yes react-doctor@0.7.8 --verbose --scope changed --base origin/main --no-telemetry",
     "doctor:full": "npx --yes react-doctor@0.7.8 --verbose --scope full --no-telemetry",