integrations: update sambanova docs (#1145)

## Overview
<!-- Brief description of what documentation is being added/updated -->
This PR updates SambaNova chat models and embeddings to now use unified
`ChatSambaNova` and `SambaNovaEmbeddings`, which were previously
separated as SambaNova Cloud and SambaStudio, two different products of
SambaNova with distinct APIs. Now, all SambaNova inference products are
under a unified API

## Type of change

**Type:**  Update existing documentation / Remove outdated content

## Related issues/PRs
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## Checklist
<!-- Put an 'x' in all boxes that apply -->
- [x] I have read the [contributing guidelines](README.md)
- [x] I have tested my changes locally using `docs dev`
- [x] All code examples have been tested and work correctly
- [x] I have used **root relative** paths for internal links
- [x] I have updated navigation in `src/docs.json` if needed
- I have gotten approval from the relevant reviewers
- (Internal team members only / optional) I have created a preview
deployment using the [Create Preview Branch
workflow](https://github.com/langchain-ai/docs/actions/workflows/create-preview-branch.yml)

## Additional notes
<!-- Any other information that would be helpful for reviewers -->

---------

Co-authored-by: Mason Daugherty <github@mdrxy.com>

Author: jhpiedrahitao

src/oss/python/integrations/chat/index.mdx

@@ -619,21 +619,13 @@ Certain model providers offer endpoints that are compatible with OpenAI's [Chat
 />
 
 <Card
-    title="SambaNovaCloud"
+    title="SambaNova"
     icon="link"
     href="/oss/integrations/chat/sambanova"
     arrow="true"
     cta="View guide"
 />
 
-<Card
-    title="SambaStudio"
-    icon="link"
-    href="/oss/integrations/chat/sambastudio"
-    arrow="true"
-    cta="View guide"
-/>
-
 <Card
     title="ChatSeekrFlow"
     icon="link"

src/oss/python/integrations/chat/sambanova.mdx

@@ -1,18 +1,18 @@
 ---
-title: ChatSambaNovaCloud
+title: ChatSambaNova
 ---
 
-This will help you get started with SambaNovaCloud [chat models](/oss/langchain/models/). For detailed documentation of all ChatSambaNovaCloud features and configurations head to the [API reference](https://docs.sambanova.ai/cloud/docs/get-started/overview).
+This will help you get started with SambaNova [chat models](/oss/langchain/models/). For detailed documentation of all `ChatSambaNova` features and configurations head to the [API reference](https://docs.sambanova.ai/cloud/docs/get-started/overview).
 
-**[SambaNova](https://sambanova.ai/)'s** [SambaNova Cloud](https://cloud.sambanova.ai/) is a platform for performing inference with open-source models
+**[SambaNova](https://sambanova.ai/)'s** [SambaCloud](http://cloud.sambanova.ai?utm_source=langchain&utm_medium=external&utm_campaign=cloud_signup) is a cloud platform for performing inference with open-source models
 
 ## Overview
 
 ### Integration details
 
 | Class | Package | Local | Serializable | JS support | Downloads | Version |
 | :--- | :--- | :---: | :---: |  :---: | :---: | :---: |
-| [ChatSambaNovaCloud](https://docs.sambanova.ai/cloud/docs/get-started/overview) | [langchain-sambanova](https://python.langchain.com/docs/integrations/providers/sambanova/) | ❌ | ❌ | ❌ | ![PyPI - Downloads](https://img.shields.io/pypi/dm/langchain_sambanova?style=flat-square&label=%20) | ![PyPI - Version](https://img.shields.io/pypi/v/langchain_sambanova?style=flat-square&label=%20) |
+| [`ChatSambaNova`](https://docs.sambanova.ai/cloud/docs/get-started/overview) | [`langchain-sambanova`](/oss/integrations/providers/sambanova/) | ❌ | beta | ❌ | ![PyPI - Downloads](https://img.shields.io/pypi/dm/langchain_sambanova?style=flat-square&label=%20) | ![PyPI - Version](https://img.shields.io/pypi/v/langchain_sambanova?style=flat-square&label=%20) |
 
 ### Model features
 
@@ -22,31 +22,27 @@ This will help you get started with SambaNovaCloud [chat models](/oss/langchain/
 
 ## Setup
 
-To access ChatSambaNovaCloud models you will need to create a [SambaNovaCloud](https://cloud.sambanova.ai/) account, get an API key, install the `langchain_sambanova` integration package.
+To access SambaNova models you will need to create a [SambaCloud](http://cloud.sambanova.ai?utm_source=langchain&utm_medium=external&utm_campaign=cloud_signup) account, get an API key, install the `langchain_sambanova` integration package.
 
 ```bash
 pip install langchain-sambanova
 ```
 
 ### Credentials
 
-Get an API Key from [cloud.sambanova.ai](https://cloud.sambanova.ai/apis) and add it to your environment variables:
-
-``` bash
-export SAMBANOVA_API_KEY="your-api-key-here"
-```
+Get an API Key from [cloud.sambanova.ai](http://cloud.sambanova.ai/apis?utm_source=langchain&utm_medium=external&utm_campaign=cloud_signupapis) Once you've done this set the SAMBANOVA_API_KEY environment variable:
 
 ```python
 import getpass
 import os
 
 if not os.getenv("SAMBANOVA_API_KEY"):
     os.environ["SAMBANOVA_API_KEY"] = getpass.getpass(
-        "Enter your SambaNova Cloud API key: "
+        "Enter your SambaNova API key: "
     )
 ```
 
-If you want to get automated tracing of your model calls you can also set your [LangSmith](https://docs.smith.langchain.com/) API key by uncommenting below:
+To enable automated tracing of your model calls, set your [LangSmith](https://docs.smith.langchain.com/) API key:
 
 ```python
 os.environ["LANGSMITH_TRACING"] = "true"
@@ -55,7 +51,7 @@ os.environ["LANGSMITH_API_KEY"] = getpass.getpass("Enter your LangSmith API key:
 
 ### Installation
 
-The LangChain **SambaNovaCloud** integration lives in the `langchain_sambanova` package:
+The LangChain **SambaNova** integration lives in the `langchain_sambanova` package:
 
 ```python
 pip install -qU langchain-sambanova
@@ -66,13 +62,14 @@ pip install -qU langchain-sambanova
 Now we can instantiate our model object and generate chat completions:
 
 ```python
-from langchain_sambanova import ChatSambaNovaCloud
+from langchain_sambanova import ChatSambaNova
 
-llm = ChatSambaNovaCloud(
+llm = ChatSambaNova(
     model="Meta-Llama-3.3-70B-Instruct",
     max_tokens=1024,
     temperature=0.7,
     top_p=0.01,
+    # other params...
 )
 ```
 
@@ -272,8 +269,8 @@ Joke(setup='Why did the cat join a band?', punchline='Because it wanted to be th
 ## Input Image
 
 ```python
-multimodal_llm = ChatSambaNovaCloud(
-    model="Llama-3.2-11B-Vision-Instruct",
+multimodal_llm = ChatSambaNova(
+    model="Llama-4-Maverick-17B-128E-Instruct",
     max_tokens=1024,
     temperature=0.7,
     top_p=0.01,
@@ -309,4 +306,4 @@ The weather in this image is a serene and peaceful atmosphere, with a blue sky a
 
 ## API reference
 
-For detailed documentation of all SambaNovaCloud features and configurations head to the API reference: [docs.sambanova.ai/cloud/docs/get-started/overview](https://docs.sambanova.ai/cloud/docs/get-started/overview)
+For detailed documentation of all SambaNova features and configurations head to the API reference: [docs.sambanova.ai/cloud/docs/get-started/overview](https://docs.sambanova.ai/cloud/docs/get-started/overview)