fix(tests): use native element clicks in layout dropdown spec

CDP-based Playwright clicks (locator.click()) do not reliably trigger
Svelte 5 onclick handlers — documented in commit 0c765d81 which fixed
13 other specs. The layout dropdown tests were missed in that pass.

Applies the same pattern: ((await locator.element()) as HTMLElement).click()
for button interactions, and native KeyboardEvent dispatch for the Escape
test (dispatched on the button so it bubbles to the parent div's onkeydown).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -2,7 +2,6 @@ name: CI
 
 on:
   push:
-    branches: [main]
   pull_request:
 
 jobs:

frontend/CLAUDE.md

@@ -165,7 +165,7 @@ npm run check       # svelte-check (type checking)
 
 ```bash
 npm run test              # Vitest unit + server tests (headless)
-npm run test:coverage     # Coverage report (server + client)
+npm run test:coverage     # Coverage report (server project only)
 npm run test:e2e          # Playwright E2E tests
 npm run test:e2e:headed   # Playwright E2E with visible browser
 npm run test:e2e:ui       # Playwright UI mode

frontend/package.json

@@ -16,7 +16,7 @@
 		"lint:boundary-demo": "eslint src/lib/tag/__fixtures__/",
 		"test:unit": "vitest",
 		"test": "npm run test:unit -- --run",
-		"test:coverage": "vitest run --coverage --project=server; vitest run -c vitest.client-coverage.config.ts --coverage",
+		"test:coverage": "vitest run --coverage --project=server && vitest run -c vitest.client-coverage.config.ts --coverage",
 		"test:e2e": "playwright test",
 		"test:e2e:headed": "playwright test --headed",
 		"test:e2e:ui": "playwright test --ui",