Improve NIP-29 group creator discovery reliability #nip29

[rabble]

Problem

The useNip29GroupCreator hook has a fallback mechanism that infers the group creator from the earliest admin event, but this is not foolproof and could lead to eCash tips being sent to the wrong person if the original creator leaves the group.

Current Implementation Issues

• Fallback assumes earliest admin = creator
• No verification of actual group ownership
• Could misattribute tips if creator transfers ownership
• Limited reliability for keyless groups

Risks

• eCash tips sent to wrong person
• Incorrect creator attribution
• Poor user experience for tipping

Potential Solutions

• Implement more robust creator detection algorithms
• Add multiple fallback strategies
• Store creator info in group metadata when possible
• Add user confirmation before sending tips
• Improve error handling for ambiguous cases

Files Affected

• Hook implementation (referenced in docs/NIP29_GROUP_CREATOR_IMPLEMENTATION.md)
• eCash tipping components

Acceptance Criteria

• More reliable creator detection
• Clear user feedback when creator is uncertain
• Confirmation dialogs for eCash transactions
• Better error handling for edge cases

Tags: #nip29