runStream method

@override Stream<MissionEvent> runStream(Mission mission, { String? systemPrompt, LlmClient? llmClient, ToolInvoker? invokeTool, })

Streams typed events for mission. The kernel orchestrates the tool registry + hooks around this call and supplies:

• systemPrompt — composed by SystemPromptComposer from the playbook and the registry tool manifests (FR-006). Implementations MUST use it as the system message of the loop.
• llmClient — the client wired by AgentRuntimePlugin (FR-007). The loop owns the completion calls; the kernel makes none itself.
• invokeTool — hook-gated tool invocation (FR-010). Implementations MUST route tool calls through it rather than calling McpTool.invoke directly.

Implementation

@override
Stream<MissionEvent> runStream(
  Mission mission, {
  String? systemPrompt,
  LlmClient? llmClient,
  ToolInvoker? invokeTool,
}) async* {
  callCount++;
  receivedSystemPrompt = systemPrompt;
  receivedLlmClient = llmClient;
  yield MissionEventStarted(mission.missionId, DateTime.now());
  for (final canonical in toolCalls) {
    yield MissionEventToolCallStart(
      mission.missionId,
      canonical,
      const <String, Object?>{},
    );
    final result = invokeTool == null
        ? null
        : await invokeTool(canonical, const <String, Object?>{});
    yield MissionEventToolCallResult(mission.missionId, canonical, result);
  }
  yield MissionEventCompleted(mission.missionId, outcome);
}