refactor: large refactor around monorepo

Just a commit point while I'm testing stuff. Already decided at this
point to simplify and revert away from PayloadCMS.

.env.example

@@ -1,23 +1,16 @@
-# Environment variables for xevion.dev
-# Dev defaults are available - no .env file needed for basic development
-# See schema in /env/schema.mjs
+# Database
+DATABASE_URL=postgresql://user:password@localhost:5432/xevion
 
-# Payload CMS (dev defaults match docker-compose credentials)
-PAYLOAD_SECRET=your-secret-key-here
-DATABASE_URI=postgresql://xevion:xevion_dev_password@localhost:5432/xevion_dev
+# Payload CMS
+PAYLOAD_SECRET=development-secret-change-in-production
 
-# Optional - enables /api/cron/updated endpoint
-GITHUB_API_TOKEN=
+# R2 Storage (optional for local dev)
+R2_ENDPOINT=https://YOUR_ACCOUNT_ID.r2.cloudflarestorage.com
+R2_BUCKET_NAME=xevion-media
+R2_ACCESS_KEY_ID=your_access_key
+R2_SECRET_ACCESS_KEY=your_secret_key
 
-# Optional - enables /api/healthcheck endpoint  
-HEALTHCHECK_SECRET=
-
-# Optional - auth for /api/cron/updated (skipped in dev)
-CRON_SECRET=
-
-# Optional
-PAYLOAD_REVALIDATE_KEY=
-TITLE=
-
-# Auto-detected, usually don't need to set
+# Application
 NODE_ENV=development
+PORT=3000
+ORIGIN=http://localhost:3000