* docs: expand server guide and add report-proxy for legacy dashboards
Document ADN-report-proxy so adn-server 2.x can feed v1 legacy monitors,
and sync EN/ES MkDocs with DATABASE, dynamic TGs, monitoring, and related topics.
* docs: add bridges vs subscriptions, performance guide, and Mermaid diagrams (#6)
Document 2.x routing model with a concrete TG 52090 example, operator-focused
performance gains (indexes, reporting, integrated proxy), and MkDocs Mermaid
support across server and monitor architecture pages.
* fix: echo TG 9990 monitor parity and UA session exclusions (#7)
Exclude 9990–9999 from SINGLE/UA locks, remap inject-only echo TX events,
resolve bridge TX peer_id for monitor display, and fix dynamic TG restore callback.
* chore: bump version to 2.0.0-rc.4