ci(web): Phase P6 — vite build in PR CI + headless E2E gate on trunk publishes (#1445)

- ci.yml: build step (vite build via turbo) runs on every PR pipeline after test
- publish.yml: e2e step boots the gateway from built dist (HOME/cwd-isolated
  throwaway PGlite) and runs the Playwright suite headless inside
  mcr.microsoft.com/playwright:v1.58.2-noble against the SPA bundle served
  exactly as production serves it; both kaniko publishes now gate on e2e
- serve-spa.ts: strip query strings before asset resolution; immutable
  cache-control for hashed assets (onSend hook); e2e spec covers both
- e2e suite hardened: globalSetup seeds admin+member through real
  bootstrap/better-auth APIs (Origin header for CSRF), loginAs waits for the
  post-login redirect (fixes 27-skipped race), stale #152-era assertions
  rewritten to the current command-driven UI, strict-mode violations fixed
  with level-1 heading queries and .or() auto-retrying locators
- verify-release mirrors the new build stage; playwright artifacts ignored

apps/web/e2e/projects.spec.ts

@@ -10,7 +10,11 @@ test.describe('Projects page', () => {
 
   test('projects page loads with heading', async ({ page }) => {
     await page.goto('/projects');
-    await expect(page.getByRole('heading', { name: /projects/i })).toBeVisible({ timeout: 10_000 });
+    // level: 1 — the "No projects yet" empty-state h2 also matches /projects/i
+    // and a two-element match is a strict-mode violation.
+    await expect(page.getByRole('heading', { level: 1, name: /projects/i })).toBeVisible({
+      timeout: 10_000,
+    });
   });
 
   test('shows empty state or project cards when loaded', async ({ page }) => {
@@ -18,23 +22,11 @@ test.describe('Projects page', () => {
     // Wait for loading state to clear
     await expect(page.getByText(/loading projects/i)).not.toBeVisible({ timeout: 10_000 });
 
-    const hasProjects = await page
+    const cardsOrEmpty = page
       .locator('[class*="grid"]')
-      .isVisible()
-      .catch(() => false);
-    const hasEmpty = await page
-      .getByText(/no projects yet/i)
-      .isVisible()
-      .catch(() => false);
-
-    expect(hasProjects || hasEmpty).toBe(true);
-  });
-
-  test('shows Active Mission section', async ({ page }) => {
-    await page.goto('/projects');
-    await expect(page.getByRole('heading', { name: /active mission/i })).toBeVisible({
-      timeout: 10_000,
-    });
+      .or(page.getByText(/no projects yet/i))
+      .first();
+    await expect(cardsOrEmpty).toBeVisible({ timeout: 10_000 });
   });
 
   test('sidebar navigation is present', async ({ page }) => {