- Updated `content/docs/guides/upload-content.md` with accurate file types, size limit explanations, and troubleshooting steps.
- Updated `content/docs/getting-started.md` to link to the detailed upload guide and clarify "Invite-only" (Whitelist) mode.
- Verified changes against `js/ui/components/UploadModal.js`, `js/storage/s3-multipart.js`, and `js/accessControl.js`.
- Included `VALIDATION_REPORT.md` documenting the verification process.
Co-authored-by: PR0M3TH3AN <[email protected]>
