v0.9.0

Added

• ConvosConnections content codecs (mirrors convos-ios#767) — convos.org/connection_payload:1.0, connection_invocation:1.0, connection_invocation_result:1.0, plus the convos.org/connection_event:1.0 grant/revoke notification.
• Capability resolution codecs (mirrors convos-ios#771) — convos.org/capability_request:1.0, capability_request_result:1.0 (latter carries availableActions: AvailableAction[]).
• CloudConnectionGrantRequest codec — convos.org/connection_grant_request:1.0, agent → device prompt to link a cloud OAuth provider.
• CLI commands:
  • convos conversation send-invocation — send a ConnectionInvocation to a conversation.
  • convos conversation send-capability-request — send a CapabilityRequest.
  • convos conversation send-cloud-connection-grant-request — send a CloudConnectionGrantRequest.
• agent serve events: connection_payload, connection_invocation, connection_result, connection_event, cloud_connection_grant_request, capability_request, capability_result, profile_update, read_receipt, plus the previously-undocumented explode_notice. All silent codecs are filtered from chat and surface as structured stdout events with catchup parity.
• agent serve stdin commands: connection-invoke, capability-request, cloud-connection-grant-request.