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

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

package.json

@@ -7,7 +7,13 @@
   "scripts": {
     "build": "tsc",
     "start": "node dist/index.js",
-    "dev": "tsx watch src/index.ts"
+    "dev": "tsx watch src/index.ts",
+    "product:site": "node product/site/server.mjs",
+    "test:product-site": "node product/site/smoke-test.cjs",
+    "test:product-site:e2e": "node product/site/e2e-test.mjs",
+    "test:product-site:verify": "node product/site/verify.mjs",
+    "test:product-site:cleanup": "node product/site/cleanup-test-submissions.mjs",
+    "deploy:product-site:verify": "bash product/site/deploy-and-verify.sh"
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.0.0",
@@ -16,12 +22,16 @@
     "dotenv": "^16.0.0",
     "express": "^4.18.0",
     "imapflow": "^1.0.0",
+    "mysql2": "^3.14.0",
     "nodemailer": "^6.9.0"
   },
   "devDependencies": {
     "@types/express": "^4.17.0",
     "@types/node": "^20.0.0",
     "@types/nodemailer": "^6.4.0",
+    "pixelmatch": "^7.1.0",
+    "playwright": "^1.59.1",
+    "pngjs": "^7.0.0",
     "tsx": "^4.0.0",
     "typescript": "^5.0.0"
   }