Implemented: Spring Boot 3.x default FAIL_ON_UNKNOWN_PROPERTIES = false — no override found, unknown JSON fields are accepted.
Implemented: ProtocolVersionInterceptor validates X-Cameleer-Protocol-Version header.
Implemented: Management health endpoint mapped to /api/v1/health.
Implemented: springdoc-openapi-starter-webmvc-ui dependency added with config in application.yml.
Implemented: All controllers mapped under /api/v1/ following protocol v1 path structure.
Implemented: BootstrapTokenValidator validates CAMELEER_AUTH_TOKEN env var with dual-token rotation support.
Implemented: SsePayloadSigner signs config-update and replay SSE events with Ed25519.
Implemented: Ed25519SigningServiceImpl generates keypair; public key returned in registration response.
Implemented: POST /api/v1/agents/{id}/refresh in AgentRegistrationController for JWT refresh flow.
Implemented: JwtServiceImpl + JwtAuthenticationFilter for JWT Bearer token authentication on protected endpoints.
Implemented: ElkDiagramRenderer with SVG + JSON layout output, served via DiagramRenderController.
Implemented: diagram_content_hash column stored in route_executions table, linking transactions to the active RouteGraph version.
Implemented: ClickHouseDiagramRepository with SHA-256 content hash and ReplacingMergeTree for content-addressable versioned storage.
Implemented: SseConnectionManager.sendPingToAll() for keepalive + Last-Event-ID header support in AgentSseController.