Agent Runtime v0.4.1

Small profile-alignment release. Public Agent Runtime stays portable; the Lime profile now names the current App Server runtime boundary clearly.

What changed

• Lime Profile now maps current runtime writes to App Server JSON-RPC -> RuntimeCore -> ExecutionBackend.
• Control-plane mapping now names agentSession/*, agentSession/event, and evidence/export.
• Legacy command glue is classified as compatibility cleanup, not a current write boundary.
• Benchmark instrumentation guidance is included in the release.

Impact

• Public core and public schemas are unchanged.
• lime-profile-0.4.0 schema and fixtures remain valid.
• This is a documentation/profile release, not a wire-schema break.