Feature : Public Private Post Visibility

[ig-imanish]

Add option to make individual posts Public or Private (visible only to approved followers), instead of all-or-nothing account privacy.

Why

• Share personal posts privately, keep others public
• No need to create seprate public private accounts
• Like Instagram/Facebook

How

• Toggle in composer: Public / Private
• Edit visibility after posting
• Lock icon on private posts
• Private posts: not in search, not retweetable, hidden from non-followers

Tech

• Add visibility field to post
• Respect account-level privacy

Done When

• Users can set per-post visibility
• Private posts stay private
• Works on web & mobile