* feat: persist peer dynamic TGs in MariaDB across reconnects
Add DATABASE config, async DynamicTgStore, and restore on RPTC so
SINGLE=0/1 dynamics survive hotspot disconnects and server restarts
without blocking the DMRD voice path.
* fix: ensure peer_dynamic_tgs table on server startup
Apply migration 004 idempotently at boot so the server does not depend
on adn-monitor db_bootstrap when peer_dynamic_tgs is missing.
* fix: import DynamicTgEntry for ruff F821 in subscription_table
* fix: log clear MariaDB startup failures to file and stderr
Validate DATABASE at config load and on connect; map common MySQL
errors to actionable messages so the server does not fail silently.
* fix: TG 4000 clears STATUS and bridge legs after dynamic reset
Clear RX slot state to stop RPTO re-seeding cleared sessions, run
in-band 4000 deactivation on inject-only paths, and mark downlink dirty.
* fix: complete TG 4000 reset for monitor and dynamic TG persistence
Emit INGRESS BRDG_EVENT so SINGLE=0 UA chips clear without stuck TX;
wipe all peer dynamic rows from memory and MariaDB on reset. Never store
TG 4000 as a UA session. Require DATABASE only for full peer-server configs.
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.
ce5rpy
Rodrigo Pérez