docs: cleanup 'signature_delta' from docs

docs/my-website/docs/providers/bedrock.md

@@ -390,9 +390,9 @@ Returns 2 new fields in `message` and `delta` object:
 Each object has the following fields:
 - `type` - Literal["thinking"] - The type of thinking block
 - `thinking` - string - The thinking of the response. Also returned in `reasoning_content`
-- `signature_delta` - string - A base64 encoded string, returned by Anthropic.
+- `signature` - string - A base64 encoded string, returned by Anthropic.
 
-The `signature_delta` is required by Anthropic on subsequent calls, if 'thinking' content is passed in (only required to use `thinking` with tool calling). [Learn more](https://docs.anthropic.com/en/docs/build-with-claude/extended-thinking#understanding-thinking-blocks)
+The `signature` is required by Anthropic on subsequent calls, if 'thinking' content is passed in (only required to use `thinking` with tool calling). [Learn more](https://docs.anthropic.com/en/docs/build-with-claude/extended-thinking#understanding-thinking-blocks)
 
 <Tabs>
 <TabItem value="sdk" label="SDK">
@@ -475,7 +475,7 @@ Same as [Anthropic API response](../providers/anthropic#usage---thinking--reason
                     {
                         "type": "thinking",
                         "thinking": "The capital of France is Paris. This is a straightforward factual question.",
-                        "signature_delta": "EqoBCkgIARABGAIiQL2UoU0b1OHYi+yCHpBY7U6FQW8/FcoLewocJQPa2HnmLM+NECy50y44F/kD4SULFXi57buI9fAvyBwtyjlOiO0SDE3+r3spdg6PLOo9PBoMma2ku5OTAoR46j9VIjDRlvNmBvff7YW4WI9oU8XagaOBSxLPxElrhyuxppEn7m6bfT40dqBSTDrfiw4FYB4qEPETTI6TA6wtjGAAqmFqKTo="
+                        "signature": "EqoBCkgIARABGAIiQL2UoU0b1OHYi+yCHpBY7U6FQW8/FcoLewocJQPa2HnmLM+NECy50y44F/kD4SULFXi57buI9fAvyBwtyjlOiO0SDE3+r3spdg6PLOo9PBoMma2ku5OTAoR46j9VIjDRlvNmBvff7YW4WI9oU8XagaOBSxLPxElrhyuxppEn7m6bfT40dqBSTDrfiw4FYB4qEPETTI6TA6wtjGAAqmFqKTo="
                     }
                 ]
             }

docs/my-website/docs/reasoning_content.md

@@ -17,7 +17,7 @@ Supported Providers:
         {
             "type": "thinking",
             "thinking": "The capital of France is Paris.",
-            "signature_delta": "EqoBCkgIARABGAIiQL2UoU0b1OHYi+..."
+            "signature": "EqoBCkgIARABGAIiQL2UoU0b1OHYi+..."
         }
     ]
 }
@@ -292,7 +292,7 @@ curl http://0.0.0.0:4000/v1/chat/completions \
           {
             "type": "thinking",
             "thinking": "The user is asking for the current weather in three different locations: San Francisco, Tokyo, and Paris. I have access to the `get_current_weather` function that can provide this information.\n\nThe function requires a `location` parameter, and has an optional `unit` parameter. The user hasn't specified which unit they prefer (celsius or fahrenheit), so I'll use the default provided by the function.\n\nI need to make three separate function calls, one for each location:\n1. San Francisco\n2. Tokyo\n3. Paris\n\nThen I'll compile the results into a response with three distinct weather reports as requested by the user.",
-            "signature_delta": "EqoBCkgIARABGAIiQCkBXENoyB+HstUOs/iGjG+bvDbIQRrxPsPpOSt5yDxX6iulZ/4K/w9Rt4J5Nb2+3XUYsyOH+CpZMfADYvItFR4SDPb7CmzoGKoolCMAJRoM62p1ZRASZhrD3swqIjAVY7vOAFWKZyPEJglfX/60+bJphN9W1wXR6rWrqn3MwUbQ5Mb/pnpeb10HMploRgUqEGKOd6fRKTkUoNDuAnPb55c="
+            "signature": "EqoBCkgIARABGAIiQCkBXENoyB+HstUOs/iGjG+bvDbIQRrxPsPpOSt5yDxX6iulZ/4K/w9Rt4J5Nb2+3XUYsyOH+CpZMfADYvItFR4SDPb7CmzoGKoolCMAJRoM62p1ZRASZhrD3swqIjAVY7vOAFWKZyPEJglfX/60+bJphN9W1wXR6rWrqn3MwUbQ5Mb/pnpeb10HMploRgUqEGKOd6fRKTkUoNDuAnPb55c="
           }
         ],
         "provider_specific_fields": {
@@ -353,5 +353,5 @@ These fields can be accessed via `response.choices[0].message.reasoning_content`
 - `thinking_blocks` - Optional[List[Dict[str, str]]]: A list of thinking blocks from the model. Only returned for Anthropic models.
   - `type` - str: The type of thinking block.
   - `thinking` - str: The thinking from the model.
-  - `signature_delta` - str: The signature delta from the model.
+  - `signature` - str: The signature delta from the model.
 

tests/local_testing/test_streaming.py

@@ -4084,7 +4084,6 @@ def test_reasoning_content_completion(model):
         )
 
         reasoning_content_exists = False
-        signature_delta_exists = False
         for chunk in resp:
             print(f"chunk 2: {chunk}")
             if (
@@ -4119,4 +4118,3 @@ def test_is_delta_empty():
             audio=None,
         )
     )
-