- adds a link ConfigHandler (router/link FactoryRegistry) that applies router.link.v1 config: Apply rebuilds the listener/dialer set wholesale, and established Xlinks survive because Listener.Close() only closes the accept loop
- translates local link: YAML into router.link.v1 JSON and pushes it through the managed-config registry at startup
- adds the UpdateLinkListeners ctrl message so the router republishes its listener set to the controller on change; the controller re-fans via the existing PeerStateChange path
- re-evaluates dialers on link group and listener changes via RescanForDialOpportunities
For #3743.
* Add router.link.v1 config type. Fixes#3974
- adds the built-in `router.link.v1` ConfigType with a JSON schema
covering listeners, dialers, heartbeats, payload/ack sender queue
sizes, and `gcMode` for auto-GC of stale links
- targets routers (`Target=router`) via the field added in #3743
- registers it for new databases via `createConfigType` in
`initialize`, and for existing databases via a migration step that
bumps the schema version 46 -> 47
- adds config-type-store tests covering registration, the router
target, and migration-driven creation on existing databases
- documents the Phase 1c step in the controller-managed router
configuration design doc
* Address review feedback on router.link.v1 config type. For #3974
- broadens the duration schema pattern to accept compound and fractional values (e.g. 1h30m, 1.5h) matching time.ParseDuration
- adds the gcMode schema property (enum preserve/orphaned/changed) to the built-in config type so its definition is complete where the type is created
- adds duration-format and gcMode validation test cases
- removes the now-unnecessary per-iteration loop variable copy in the reject-cases test
Shawn Carey