Replace internal bridge terminology with routing (RoutingUseCases, AclRouter,
routing_table export). SubscriptionStore remains runtime authority with O(1)
indexes for router and downlink filters. Fix STATIC TG parity on OPTIONS/RPTO,
parrot in-band edge cases, and remove per-packet routing_table export from the
hot path that caused high CPU under multi-hotspot OBP load.
Require subscription_store in BridgeUseCases and route timer, OPTIONS,
static TG, and OBP mutations through store ops with export-only BRIDGES shim.
Fix dashboard YAML static TG fallback and sole-hotspot monitor remap for
dynamic UA when a bridge leg is active.
Add real-stack REPEAT and proxy fan-in E2E tests so regressions outside
DeterministicScenario are caught. Remove duplicate or fragile tests,
consolidate monitor remap cases, and document harness vs integration policy.
Introduce RuntimeContextHolder with ConfigProxy so main wiring keeps a stable
config view while SIGHUP reload builds a deep copy, applies reload_server_config,
then swaps the pointer only on success.