Feature: Instagram auto-posting integration for SkateHive mobile feed

[sktbrd]

Summary

Support Instagram auto-posting or sharing flow for new SkateHive mobile feed content.

Scope / repo classification

• Repo: SkateHive/mobileapp
• Why: mobile publishing may need platform-specific capture/share UX, media preparation, permissions, and handoff to the Instagram integration path.

Goal

When a new SkateHive post is published from the mobile app, optionally prepare or trigger a corresponding Instagram post using the post content/media and SkateHive-aware formatting.

Acceptance criteria

• mobile publication trigger or share handoff is defined
• mobile media requirements for Instagram are documented
• caption/hashtag formatting behavior matches SkateHive web where possible
• platform-specific constraints for iOS/Android are explicit
• integration constraints and rate-limit risks are explicit

Technical considerations

• Instagram Graph API posting is server-side and requires business account permissions
• Native Instagram sharing may be an alternative for user-driven posting
• Video/image dimensions, duration, and file size may require mobile-side validation
• UX should make cross-posting optional and clear

Source

Split from SkateHive/monorepo#4: Instagram auto-posting integration for the SkateHive feed.

[sktbrd]

@humbertoperes adicionei voce no issue como tester