Problem

Users cannot share subscription details.

Context

Users want to share subscription info with friends or family.

Proposed Solution

Implement share:

1. Add share button to subscription
2. Generate share text
3. Use native share sheet
4. Include subscription link if deep linked

Acceptance Criteria

• Share button present
• Text includes subscription info
• Native share sheet opens
• Handles cancel gracefully

Technical Notes

Component: Share from react-native
Files: SubscriptionCard, SubscriptionDetail

Constraints

• Limit shared data
• Handle no share apps
• Platform differences