add claw-code-agent/src/plan_runtime.py and claw-code-agent/src/background_runtime.py. The agent now has a real

persistent plan runtime with update_plan, plan_get, and plan_clear, plus plan-to-task sync wired through claw-code-agent/src/
  agent_tools.py, claw-code-agent/src/agent_runtime.py, claw-code-agent/src/agent_context.py, claw-code-agent/src/agent_prompting.py, and claw-code-agent/src/
  agent_slash_commands.py. New local plan slash commands are /plan and /planner.

src/__init__.py

@@ -13,14 +13,19 @@ from .agent_runtime import LocalCodingAgent
 from .agent_session import AgentMessage, AgentSessionState
 from .agent_tools import build_tool_context, default_tool_registry, execute_tool
 from .agent_types import AgentPermissions, AgentRunResult, AgentRuntimeConfig, ModelConfig
+from .background_runtime import BackgroundSessionRuntime
 from .commands import PORTED_COMMANDS, build_command_backlog
+from .mcp_runtime import MCPRuntime
 from .parity_audit import ParityAuditResult, run_parity_audit
+from .plan_runtime import PlanRuntime, PlanStep
 from .plugin_runtime import PluginRuntime
 from .port_manifest import PortManifest, build_port_manifest
 from .query_engine import QueryEnginePort, TurnResult
 from .runtime import PortRuntime, RuntimeSession
 from .session_store import StoredSession, load_session, save_session
 from .system_init import build_system_init_message
+from .task import PortingTask
+from .task_runtime import TaskRuntime
 from .tools import PORTED_TOOLS, build_tool_backlog
 
 __all__ = [
@@ -31,15 +36,21 @@ __all__ = [
     'AgentRuntimeConfig',
     'AgentMessage',
     'AgentSessionState',
+    'BackgroundSessionRuntime',
     'LocalCodingAgent',
+    'MCPRuntime',
     'ModelConfig',
     'ParityAuditResult',
+    'PlanRuntime',
+    'PlanStep',
     'PortManifest',
     'PortRuntime',
     'PluginRuntime',
+    'PortingTask',
     'QueryEnginePort',
     'RuntimeSession',
     'StoredSession',
+    'TaskRuntime',
     'TurnResult',
     'PORTED_COMMANDS',
     'PORTED_TOOLS',