Migrate dev server from MongoDB to SQLite

- Replace mongooseAdapter with sqliteAdapter in payload config
- Update database configuration to use file:./dev.db
- Remove MongoDB memory database helper and references
- Simplify start script by removing verbose logging and MongoDB messaging
- Fix email processing with immediate send support and proper queue handling
- Restructure app with route groups for frontend/admin separation
- Add dashboard and test pages for email management
- Update API routes for improved email processing and testing

🤖 Generated with [Claude Code](https://claude.ai/code)

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

package.json

@@ -23,9 +23,6 @@
     "dev:generate-importmap": "npm run dev:payload generate:importmap",
     "dev:generate-types": "npm run dev:payload generate:types",
     "dev:payload": "cross-env PAYLOAD_CONFIG_PATH=./dev/payload.config.ts payload",
-    "payload": "cross-env NODE_OPTIONS=--no-deprecation payload",
-    "generate:importmap": "npm run payload generate:importmap",
-    "generate:types": "npm run payload generate:types",
     "lint": "eslint",
     "lint:fix": "eslint ./src --fix",
     "prepublishOnly": "npm run clean && npm run build",