Introduce downlink.py as the single authority for hotspot eligibility (OPTIONS,
slot busy, post-TX GROUP_HANGTIME). send_peer and BRDG fan-out share the same
gate; monitor events carry stream id from BRDG so new QSOs after hangtime
display without replaying calls blocked during the hangtime window.
Planned release: 2.2.0
Normalize all Python sources to the standard ADN copyright block with
complete GPLv3 notice. Add legacy attribution on routing and dmr_utils
ports; drop SemVer wording from changelog and fix an unused test import.
Match legacy routerHBP so ARS/LRRP replies to private subscribers
use pvt_call when SUB_MAP idle check fails, without marking unit data
ingress as voice-busy on the source hotspot.
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.
Enforce strict SINGLE=1 RX exclusivity, always filter inject-only downlink by
each peer's own OPTIONS, and push self-service DB options only after PASS=.
Stop merged SYSTEM static TG lists from leaking across hotspots in topology.
Decouple bridge events from TCP send via a reactor-drained queue (50ms, 2048
events). Export peer connected_at in topology so monitor timers survive refresh.