DualStateIncidentCard:
- Add proposalId prop for approval actions
- Add onApprovalChange callback for status updates
- Implement handleApprove() calling POST /api/v1/approvals/{id}/sign
- Implement handleReject() calling POST /api/v1/approvals/{id}/reject
- Add ButtonState management (idle/loading/approved/rejected/error)
- Loading spinner during API call
- Success state: green "已授權" / red "已拒絕"
- Error state: orange "錯誤" with auto-recovery
API Client:
- Fix endpoint mismatch: rename approveApproval to signApproval
- Use correct endpoint /sign instead of /approve
- Add signer parameter for multi-sig support
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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