feat(edge): wire HTTP API to message bus

[modelsbridgeaicom-ship-it]

Fixes #22
/claim #22

Summary

• add the requested edge HTTP endpoints: GET /api/health, GET /api/status, POST /api/command, and POST /api/message
• keep the existing /healthz and /api/v1/* compatibility routes
• inject the gateway MessageBus into the edge server and publish accepted commands/messages as inbound bus messages
• add focused pkg/edge tests for health/status aliases, command ingestion, message ingestion, invalid JSON, and missing command type
• fix the existing pkg/gene selector tie case so the repository-wide test suite is green

Validation

• go test ./...
• git diff --check

[modelsbridgeaicom-ship-it]

Fresh validation run on 2026-06-06 for PR #34:

• go test ./... -> passed
• go vet ./... -> passed
• git diff --check -> passed

The implementation remains scoped to the Edge HTTP Server bounty: /api/health, /api/status, /api/command, /api/message, compatibility routes, MessageBus ingestion, and the minimal pkg/gene deterministic selector fix needed for repository-wide green tests.