feat(llm-task): add thinking override

Co-authored-by: Xaden Ryan <165437834+xadenryan@users.noreply.github.com>

docs/tools/llm-task.md

@@ -75,6 +75,7 @@ outside the list is rejected.
 - `schema` (object, optional JSON Schema)
 - `provider` (string, optional)
 - `model` (string, optional)
+- `thinking` (string, optional)
 - `authProfileId` (string, optional)
 - `temperature` (number, optional)
 - `maxTokens` (number, optional)
@@ -90,6 +91,7 @@ Returns `details.json` containing the parsed JSON (and validates against
 ```lobster
 openclaw.invoke --tool llm-task --action json --args-json '{
   "prompt": "Given the input email, return intent and draft.",
+  "thinking": "low",
   "input": {
     "subject": "Hello",
     "body": "Can you help?"

docs/tools/lobster.md

@@ -106,6 +106,7 @@ Use it in a pipeline:
 ```lobster
 openclaw.invoke --tool llm-task --action json --args-json '{
   "prompt": "Given the input email, return intent and draft.",
+  "thinking": "low",
   "input": { "subject": "Hello", "body": "Can you help?" },
   "schema": {
     "type": "object",