feat(protocol): mediate CoT through canonical twin and task state

[mbuckton]

Summary

• resolve configured endpoint-scoped CoT UIDs to canonical twins
• mediate source-aware telemetry through TwinManager for STANAG adapters
• add the named maps-stanag-4817-v1 canonical task profile and durable correlation
• preserve validated CoT extensions and explicitly convert HAE/MSL altitude
• prevent duplicate and late observations or lifecycle events from regressing state

Verification

• git diff --check — passed
• tree-sitter Java syntax parse for all 43 changed Java files — passed
• mvn -DskipTests compile — blocked before compilation because this environment cannot resolve repository.mapsmessaging.io / Maven Central dependencies

Notes

The existing Network Connection state model and connection-management mechanism are unchanged.

Refs: MSG-247

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[mbuckton]

Cross-repository adapter integration is now available in Maps-Messaging/stanag-state-adapter#41.

This branch also includes 67245401cb9ff433c44e1448576e0c84e192320e (fix(protocol): preserve CoT cancellation provenance), ensuring a CoT-originated cancellation retains lastUpdateProtocol=cot while the STANAG mediator consumes the PREEMPTING transition.

Verification on this head:

• CoT STANAG mapping validation: 25 tests, 0 failures/errors — https://github.com/Maps-Messaging/mapsmessaging_server/actions/runs/34346200838
• MAVLink area mission validation: PASS — https://github.com/Maps-Messaging/mapsmessaging_server/actions/runs/34346200831
• coordinated adapter suite: 476 tests, 0 failures/errors, 3 skipped — https://github.com/Maps-Messaging/stanag-state-adapter/actions/runs/34346224821

MSG-248 remains the owner for live two-server telemetry/task-lifecycle acceptance, so this PR remains draft.

Refs: MSG-247