docs(zai): document tool_stream defaults

docs/gateway/configuration-reference.md

@@ -666,6 +666,7 @@ Time format in system prompt. Default: `auto` (OS preference).
 Your configured aliases always win over defaults.
 
 Z.AI GLM-4.x models automatically enable thinking mode unless you set `--thinking off` or define `agents.defaults.models["zai/<model>"].params.thinking` yourself.
+Z.AI models enable `tool_stream` by default for tool call streaming. Set `agents.defaults.models["zai/<model>"].params.tool_stream` to `false` to disable it.
 
 ### `agents.defaults.cliBackends`
 

docs/providers/zai.md

@@ -32,5 +32,7 @@ openclaw onboard --zai-api-key "$ZAI_API_KEY"
 ## Notes
 
 - GLM models are available as `zai/<model>` (example: `zai/glm-5`).
+- `tool_stream` is enabled by default for Z.AI tool-call streaming. Set
+  `agents.defaults.models["zai/<model>"].params.tool_stream` to `false` to disable it.
 - See [/providers/glm](/providers/glm) for the model family overview.
 - Z.AI uses Bearer auth with your API key.