Add gmail-browser skill with persistent auth session

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

gmail-browser/SKILL.md

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+---
+name: gmail-browser
+description: Read Gmail emails and threads using a persistent authenticated Chromium session. Use when asked to read, review, or extract content from a Gmail URL.
+version: 1.0.0
+---
+
+# Gmail Browser
+
+Read Gmail emails via Playwright using a saved auth session (no manual login required).
+
+## Auth State
+
+Saved at: `~/notes/skills/.playwright-auth/google.json`
+
+If the session has expired (redirects to Google sign-in), run the re-auth flow below.
+
+## Reading an Email
+
+```bash
+# Start a named session with saved auth
+playwright-cli -s=gmail open --persistent 2>&1 &
+sleep 5
+playwright-cli -s=gmail state-load ~/notes/skills/.playwright-auth/google.json
+playwright-cli -s=gmail goto "<gmail_url>"
+
+# Extract full email body text
+playwright-cli -s=gmail eval "Array.from(document.querySelectorAll('.a3s')).map(el => el.innerText).join('\n\n---\n\n')"
+
+# Close when done
+playwright-cli -s=gmail close
+```
+
+## Re-Auth Flow (if session expired)
+
+```bash
+playwright-cli -s=gmail open --persistent --headed "https://accounts.google.com"
+# User logs in manually in the browser window
+playwright-cli -s=gmail state-save ~/notes/skills/.playwright-auth/google.json
+playwright-cli -s=gmail close
+```
+
+## Notes
+
+- The `.a3s` CSS class is Gmail's email body container.
+- The session is saved with `--persistent` so cookies survive restarts as long as state-load is called.
+- Auth state path is gitignored — do not commit it.