Add multi-account OAuth, Obsidian integration, product assets, and test tooling

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

product/site/VERIFICATION.md

@@ -0,0 +1,64 @@
+# SquareMCP Site Verification
+
+Use this command after deployment changes to verify the live marketing site:
+
+```bash
+npm run test:product-site:verify
+```
+
+Or use the full deploy wrapper:
+
+```bash
+npm run deploy:product-site:verify
+```
+
+What it covers:
+
+1. `smoke`
+   - verifies page JS behavior in isolation
+   - checks submit flow wiring, copy behavior, and hero poster swap logic
+
+2. `e2e-desktop`
+   - loads the live site in Chromium
+   - checks navigation anchors
+   - waits for the hero animation to swap to the poster
+   - submits the live pilot request form
+   - verifies success UI and form reset
+   - confirms the request ID is written to the vault
+
+3. `e2e-mobile`
+   - repeats the live submit flow in a mobile viewport
+   - checks for horizontal overflow and clipped key layout regions
+   - confirms the request ID is written to the vault
+   - compares the captured mobile screenshot against the stored baseline
+
+Visual diff baselines:
+
+- `product/site/baselines/desktop.png`
+- `product/site/baselines/mobile.png`
+
+Diff artifacts:
+
+- `/tmp/squaremcp-e2e-desktop-diff.png`
+- `/tmp/squaremcp-e2e-mobile-diff.png`
+
+Artifacts:
+
+- desktop screenshot: `/tmp/squaremcp-e2e-desktop.png`
+- mobile screenshot: `/tmp/squaremcp-e2e-mobile.png`
+
+Vault write targets:
+
+- `SquareMCP/Pilot Requests.md`
+- `Daily Notes/<today>.md`
+
+Automated browser test submissions are tagged for cleanup:
+
+- `#squaremcp-e2e`
+- `#squaremcp-test-cleanup`
+
+To remove those entries from the vault logs:
+
+```bash
+npm run test:product-site:cleanup
+```