fix(sdk): address approval interface review findings

python/sdk/README.md

@@ -76,7 +76,7 @@ with HarnessClient(HarnessConfig(dsh_home="/absolute/path/to/dsh-home")) as clie
         print(question.toolName, question.reason)
         client.respond(request.id, {"outcome": "rejected"})
     else:
-        client.respond_error(request.id, -32601, "Unsupported client request")
+        client.respond_error(request.id, code=-32601, message="Unsupported client request")
 ```
 
 ## Customize plugins

python/sdk/README.zh.md

@@ -76,7 +76,7 @@ with HarnessClient(HarnessConfig(dsh_home="/absolute/path/to/dsh-home")) as clie
         print(question.toolName, question.reason)
         client.respond(request.id, {"outcome": "rejected"})
     else:
-        client.respond_error(request.id, -32601, "Unsupported client request")
+        client.respond_error(request.id, code=-32601, message="Unsupported client request")
 ```
 
 ## 自定义插件

python/sdk/tests/test_approval_runtime.py

@@ -23,7 +23,7 @@ def test_python_approval_controls_runtime_operation(tmp_path: Path, outcome: str
     binary = repo / "apps/cli/lib/bin.js"
     if node is None or not binary.exists():
         pytest.skip("requires Node and built dsh CLI")
-    fixture = repo / "apps/cli/tests/profiles/sdk/fixtures/approval.mjs"
+    fixture = repo / "packages/sdk/server/tests/fixtures/approval.mjs"
     marker = tmp_path / "approved.txt"
     patch = tmp_path / "approval.patch.yml"
     patch.write_text("- insert:\n    - id: approval-fixture\n      name: " + json.dumps(str(fixture))