Profiles: customization, avatars, badges, exportable card

[jal-co]

• Public page customization
  • Plus-only curated fonts, sanitized tweakcn themes, R2 background images, visual framing, and dark/light overlays shipped in feat(profile): add Plus profile customization #94
  • Published customization remains visible after Plus lapses; edits require active Plus
• Much better avatar upload (crop, drag-drop) + stock avatars
• Prod R2 bucket setup (also on Ops: rotate all dev-exposed secrets + prod checklist before launch #51)
• Rebuild account customization (profile settings page)
• Badges / achievements (deferred — do not implement yet; early adopter/member display infrastructure remains unchanged)
• Exportable interactive profile card → share to X (delight)

[jal-co]

Audit update: avatar upload and R2-backed media plumbing are shipped. Keep open for crop/drag-drop/stock options, profile customization, achievements/badges, exportable profile card, and production media verification.