Updates `content/upload-content.md` and `docs/storage-r2.md` to reflect the current manual configuration workflow for Cloudflare R2 storage.
Key changes:
- Removes deprecated instructions for generating "Admin Read & Write" or "Workers R2 Storage" automation tokens.
- Documents the new requirement to manually create a bucket and enable "Public Access" (r2.dev subdomain) in the Cloudflare Dashboard.
- Adds explicit instructions for manually configuring CORS policy via the Cloudflare Dashboard, providing the required JSON configuration.
- Aligns the "Configure bitvid" steps with the application's current UI, which requires the "Public Bucket URL" as an explicit input.
- Clarifies that "Object Read & Write" permissions are sufficient and recommended for security.
- Add new "Setup Guide" section to `docs/storage-r2.md` detailing the dual-credential requirement (S3 Keys + Cloudflare API Token) for full automation.
- Remove unsupported "manual/S3-only" workflow documentation to prevent user confusion.
- Update `js/services/r2Service.js` error message to explicitly prompt users for an API Token when the public domain is missing, instead of suggesting manual configuration.
google-labs-jules[bot]