Add control residual options table with liquidity-only manual close.

Fleet status exposes enriched residuals; manual close skips the premium recovery gate while auto mid-close remains unchanged.

Co-authored-by: Cursor <cursoragent@cursor.com>

control/backend/app/api/nodes.py

@@ -442,6 +442,35 @@ async def node_stats(
     return data
 
 
+class ResidualCloseBody(BaseModel):
+    group_id: str = Field(min_length=1, max_length=128)
+
+
+@router.post("/{node_id}/residual/close")
+async def node_residual_close(
+    node_id: int,
+    body: ResidualCloseBody,
+    _user: Annotated[str, Depends(require_control_user)],
+) -> dict:
+    """代理策略机手动平单条残留（只验流动性）。"""
+    db = get_control_db()
+    node = db.get_node(node_id)
+    if not node:
+        raise HTTPException(status_code=404, detail="节点不存在")
+    if not node.get("token_sealed"):
+        raise HTTPException(status_code=400, detail="未生成 Token")
+    code, data = await call_node(
+        node,
+        "POST",
+        "/api/fleet/residual/close",
+        json_body={"group_id": body.group_id},
+        timeout=30.0,
+    )
+    if code >= 400:
+        _raise_node_error(code, data)
+    return {"ok": True, "result": data}
+
+
 @router.post("/{node_id}/start")
 async def node_start(
     node_id: int,