Forward diagnosis chain-hop probes now inherit the tunnel ipPreference so v6-priority tunnels test IPv6 targets instead of defaulting to IPv4. Add a contract test to lock IPv6 target selection for entry->chain and chain->exit diagnostics.
Reduce repetitive raw SQL in test bodies by routing scalar and multi-column checks through shared helpers, keeping test intent clearer without changing behavior.
- 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
Route diagnosis for shared remote nodes through federation runtime APIs so tunnel and forward diagnostics work across panels, and add contract coverage for single-panel and dual-panel scenarios.
sagit