refactor: extract sanitizeForTestId to shared utility

Address PR review comments by:
- Creating shared sanitizeForTestId utility in apps/ui/src/lib/utils.ts
- Updating ProjectSwitcherItem to use the shared utility
- Adding matching helper to test utils for E2E tests
- Updating all E2E tests to use the sanitization helper

This ensures the component and tests use identical sanitization logic,
making tests robust against project names with special characters.

apps/ui/tests/projects/new-project-creation.spec.ts

@@ -14,6 +14,7 @@ import {
   authenticateForTests,
   handleLoginScreenIfPresent,
   waitForNetworkIdle,
+  sanitizeForTestId,
 } from '../utils';
 
 const TEST_TEMP_DIR = createTempDirPath('project-creation-test');
@@ -79,7 +80,8 @@ test.describe('Project Creation', () => {
     // Wait for project to be set as current and visible on the page
     // The project name appears in the project switcher button
     // Use ends-with selector since data-testid format is: project-switcher-{id}-{sanitizedName}
-    await expect(page.locator(`[data-testid$="-${projectName}"]`)).toBeVisible({
+    const sanitizedProjectName = sanitizeForTestId(projectName);
+    await expect(page.locator(`[data-testid$="-${sanitizedProjectName}"]`)).toBeVisible({
       timeout: 15000,
     });
 

apps/ui/tests/projects/open-existing-project.spec.ts

@@ -18,6 +18,7 @@ import {
   authenticateForTests,
   handleLoginScreenIfPresent,
   waitForNetworkIdle,
+  sanitizeForTestId,
 } from '../utils';
 
 // Create unique temp dir for this test run
@@ -159,7 +160,8 @@ test.describe('Open Project', () => {
     // The project name appears in the project switcher button
     // Use ends-with selector since data-testid format is: project-switcher-{id}-{sanitizedName}
     if (targetProjectName) {
-      await expect(page.locator(`[data-testid$="-${targetProjectName}"]`)).toBeVisible({
+      const sanitizedName = sanitizeForTestId(targetProjectName);
+      await expect(page.locator(`[data-testid$="-${sanitizedName}"]`)).toBeVisible({
         timeout: 15000,
       });
     }