fix(ci): drop --with-deps from playwright install on self-hosted runner

The VPS runner (peptide-vps) has OS-level Playwright deps pre-installed by
root. --with-deps triggers apt-get which requires sudo, blocked by the
runner's NoNewPrivileges systemd hardening. Drop the flag; Playwright's
binary-only install succeeds as ghrunner with no elevated privileges.

SSH-verified: npx playwright install chromium succeeds for ghrunner user;
Chromium 149.0.7827.55 downloaded to /home/ghrunner/.cache/ms-playwright.

Bump: v1.7.1 → v1.7.2

Agent-Session: smoke-playwright-nodeps-20260617

.github/workflows/smoke.yml

@@ -53,7 +53,7 @@ jobs:
         run: npm ci
 
       - name: Install Playwright browsers
-        run: npx playwright install chromium --with-deps
+        run: npx playwright install chromium
 
       - name: Run smoke tests
         env: