feat: resident runtime, shutdown command, observatory, and IPL logging hardening

- keep BEDS resident after IPL and coordinate clean shutdown
- propagate AMQP shutdown command across dispatcher pool
- add structured IPL milestone/event-chain logging with root GUID context
- add optional trace_on config for verbose method-entry diagnostics
- add dev purge-on-IPL controls for admin/logger collections
- add log level showcase events after IPL node-green
- add Mongo logger store helpers for chain/root lookup and purge
- add/modernize BEDS Observatory log_dumper utility UI and root record view
- refresh source headers and wiki docs for current architecture/runtime
- add architecture visual brief for leadership/image-generation workflows

wiki/Home.md

@@ -18,6 +18,7 @@ If you are reading this as a new contributor, start here and read in order. The
 - [IPL — Initial Program Load](04-ipl.md) — The bootstrap sequence, step by step, and why order matters
 - [Configuration System](05-configuration.md) — Layered TOML, environment files, topology options
 - [Modernization Roadmap](10-modernization-roadmap.md) — POC-first execution sequence and modernization requirements
+- [Architecture Visual Brief](11-beds-architecture-visual-brief.md) — Leadership-facing architecture narrative and diagram prompts
 
 ### Messaging
 - [Queue Topology](06-queue-topology.md) — AMQP exchanges, queues, routing keys, and the broker model