Merge branch 'fix-resend-temp'

feat(webclient): add share mode support to item sending

Refactor the `sendItemHandler` to support a new "share" mode alongside the
default "send" behavior. When in share mode, the system creates or
activates a resend configuration with a UID prefix filter instead of
performing a one-time transmission.

- Implement `SendItemRequest` struct for structured JSON decoding
- Add `handleSendMode` and `handleShareMode` helper functions
- Implement logic to find and reactivate existing share configurations
- Update frontend to handle share mode success states and refresh store
- Improve error reporting with descriptive JSON responses and HTTP status codes

docs: update TODO list by removing completed items and reorganizing

chore: Set image names in docker-compose.yaml

Update docs

Resend service

SendTo in UnitDetails

Add stale timer

Fix duplicate radar bug
Delete for flows
Remove infomarkers

Fix bugs

Select contact in send modal