fix(generators): run UI tests, guard optional bus, harden e2e clones

Three generator fixes:
- templates/feature/vitest.config.ts.hbs lacked an include for
  .test.{ts,tsx}; the node base only includes .test.ts, so scaffolded
  UI component tests never executed
- gen event consume emitted an unguarded bus.subscribe although
  ctx.bus is optional in BindContext — now wrapped in if (bus) {}
- e2e repo clones now exclude /dist and /.next build outputs, and
  every dep-stripping e2e strips the scaffolded package from EVERY
  workspace package.json via globSync instead of a hardcoded dependent
  list that drifts as packages gain or drop the dependency

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

turbo/generators/templates/feature/vitest.config.ts.hbs

@@ -12,6 +12,9 @@ import {
 // manifest when adjusting per-feature bands.
 export default mergeConfig(nodeVitestConfig, {
   test: {
+    // The node base only includes .test.ts; UI tests are .test.tsx files
+    // that opt into jsdom per-file via the @vitest-environment docblock.
+    include: ["src/**/*.test.{ts,tsx}"],
     coverage: {
       exclude: [
         // DI bootstrap — wires InversifyJS at app startup; not unit-testable