Federation mode panel peering with port-forward tunnel type (tunnelType=1)
was not updating peer_share.current_flow because regular forward traffic
uses different service name pattern than federation tunnel traffic.
Added parsePeerShareIDFromFederationTunnelName() to extract shareID from
tunnel names matching 'Share-{shareId}-Port-{port}' pattern, and
processPeerShareFlowFromForward() to update peer_share flow stats when
the forward belongs to a federation port-forward tunnel.
- Extract database layer into model and repo packages
- Split repository into focused modules (control, federation, flow, groups, mutations)
- Remove monolithic db.go and sqlite/repository.go
- Update handlers to use new repository structure
- Migrate contract tests to new patterns
- Add migration plan documentation
sagitchu