feat: Update CLAUDE.md and add playwright-cli skills

.claude/skills/playwright-cli/references/request-mocking.md

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+# Request Mocking
+
+Intercept, mock, modify, and block network requests.
+
+## CLI Route Commands
+
+```bash
+# Mock with custom status
+playwright-cli route "**/*.jpg" --status=404
+
+# Mock with JSON body
+playwright-cli route "**/api/users" --body='[{"id":1,"name":"Alice"}]' --content-type=application/json
+
+# Mock with custom headers
+playwright-cli route "**/api/data" --body='{"ok":true}' --header="X-Custom: value"
+
+# Remove headers from requests
+playwright-cli route "**/*" --remove-header=cookie,authorization
+
+# List active routes
+playwright-cli route-list
+
+# Remove a route or all routes
+playwright-cli unroute "**/*.jpg"
+playwright-cli unroute
+```
+
+## URL Patterns
+
+```
+**/api/users           - Exact path match
+**/api/*/details       - Wildcard in path
+**/*.{png,jpg,jpeg}    - Match file extensions
+**/search?q=*          - Match query parameters
+```
+
+## Advanced Mocking with run-code
+
+For conditional responses, request body inspection, response modification, or delays:
+
+### Conditional Response Based on Request
+
+```bash
+playwright-cli run-code "async page => {
+  await page.route('**/api/login', route => {
+    const body = route.request().postDataJSON();
+    if (body.username === 'admin') {
+      route.fulfill({ body: JSON.stringify({ token: 'mock-token' }) });
+    } else {
+      route.fulfill({ status: 401, body: JSON.stringify({ error: 'Invalid' }) });
+    }
+  });
+}"
+```
+
+### Modify Real Response
+
+```bash
+playwright-cli run-code "async page => {
+  await page.route('**/api/user', async route => {
+    const response = await route.fetch();
+    const json = await response.json();
+    json.isPremium = true;
+    await route.fulfill({ response, json });
+  });
+}"
+```
+
+### Simulate Network Failures
+
+```bash
+playwright-cli run-code "async page => {
+  await page.route('**/api/offline', route => route.abort('internetdisconnected'));
+}"
+# Options: connectionrefused, timedout, connectionreset, internetdisconnected
+```
+
+### Delayed Response
+
+```bash
+playwright-cli run-code "async page => {
+  await page.route('**/api/slow', async route => {
+    await new Promise(r => setTimeout(r, 3000));
+    route.fulfill({ body: JSON.stringify({ data: 'loaded' }) });
+  });
+}"
+```