fix: connect 10 unconnected backend modules to real code paths (context_builder→agent_runner, agent_permissions→agent_runner, agent_tools→agent_runner, data_policy→agent_runner, oversight→agent_runner+migration 0128, transparency→agent_runner, agent_stream→agent_routes SSE endpoint, agent_memory AI-module deleted, decision_guard→engine, require_approval→agent_runner), 11 integration tests passing

app/plugins/builtins/automation/agent_routes.py

@@ -601,3 +601,55 @@ async def send_agent_message_endpoint(
     )
     return result
 
+
+
+# ─── Punkt 7: SSE Streaming Endpoint (agent_stream.py) ─────────────────────
+
+
+@router.post("/{id}/stream")
+async def stream_agent_run(
+    id: str,
+    body: AgentMessageRequest,
+    current_user: dict[str, Any] = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """Stream an agent run via Server-Sent Events (SSE).
+
+    Uses ``app.ai.agent_stream.stream_react_loop`` to emit step events
+    in real-time as the agent processes.
+    """
+    from fastapi.responses import StreamingResponse
+    from app.ai.agent_stream import stream_react_loop
+    from app.plugins.builtins.ai_assistant.contracts import get_tool_registry
+
+    tenant_id = uuid.UUID(current_user["tenant_id"])
+    user_id = uuid.UUID(current_user["user_id"])
+    try:
+        aid = uuid.UUID(id)
+    except (ValueError, TypeError):
+        raise HTTPException(status_code=400, detail="Invalid agent ID") from None
+
+    agent = await AgentService.get_by_id(db, tenant_id, aid)
+    if agent is None:
+        raise HTTPException(status_code=404, detail="Agent not found")
+    if not agent.is_active:
+        raise HTTPException(status_code=400, detail="Agent is not active")
+
+    registry = get_tool_registry()
+    tool_ids: list[str] = list(agent.tool_ids or [])
+    tools = registry.get_by_names(tool_ids) if tool_ids else []
+    tool_schemas = [t.to_openai_schema() for t in tools] if tools else []
+
+    return StreamingResponse(
+        stream_react_loop(
+            agent_definition=agent,
+            user_message=body.message,
+            tools=tool_schemas,
+            tool_registry=registry,
+            db=db,
+            tenant_id=tenant_id,
+            user_id=user_id,
+            agent_run_id=aid,
+        ),
+        media_type="text/event-stream",
+    )