Uploads & Product Cleanup

✨ New Features

• Image Uploads: Added compressed image uploads with validation, storage, quota tracking, and ownership checks.

🧹 Improvements

• Draft First: Made Draft the primary creation flow.
• Cleaner Navigation: Hid unfinished Billing, Notifications, and Help/Support areas until ready.
• Image Fixes: Improved image previews, markdown image handling, and uploaded filename behavior.