feat: add MiniMax provider support

python/packages/minimax/AGENTS.md

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+# MiniMax Package (agent-framework-minimax)
+
+Integration with MiniMax's Anthropic-compatible API for Microsoft Agent Framework.
+
+## Main Classes
+
+- **`MiniMaxClient`** - Chat client for MiniMax models via Anthropic-compatible API
+- **`RawMiniMaxClient`** - Raw client without middleware or telemetry
+- **`MiniMaxSettings`** - Settings TypedDict for MiniMax configuration
+
+## Supported Models
+
+| Model ID | Description |
+|----------|-------------|
+| `MiniMax-M2.7` | Peak Performance. Ultimate Value. Master the Complex |
+| `MiniMax-M2.7-highspeed` | Same performance, faster and more agile |
+
+## Usage
+
+```python
+from agent_framework_minimax import MiniMaxClient
+
+# Set MINIMAX_API_KEY environment variable, then:
+client = MiniMaxClient(model="MiniMax-M2.7")
+response = await client.get_response("Hello from MiniMax!")
+```
+
+## Import Path
+
+```python
+from agent_framework_minimax import MiniMaxClient
+```
+
+## Environment Variables
+
+| Variable | Required | Description |
+|----------|----------|-------------|
+| `MINIMAX_API_KEY` | Yes | MiniMax API key |
+| `MINIMAX_CHAT_MODEL` | No | Default model to use |
+| `MINIMAX_BASE_URL` | No | Override base URL (default: `https://api.minimax.io/anthropic`) |
+
+## API Reference
+
+- Chat (Anthropic Compatible): https://platform.minimax.io/docs/api-reference/text-anthropic-api

python/packages/minimax/LICENSE

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+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE

python/packages/minimax/README.md

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+# Get Started with Microsoft Agent Framework MiniMax
+
+Please install this package via pip:
+
+```bash
+pip install agent-framework-minimax --pre
+```
+
+## MiniMax Integration
+
+The MiniMax integration enables communication with MiniMax's Anthropic-compatible API,
+allowing your Agent Framework applications to leverage MiniMax's powerful language models.
+
+### Environment Variables
+
+Set the following environment variables before using the client:
+
+```bash
+export MINIMAX_API_KEY="your_minimax_api_key"
+```
+
+### Basic Usage Example
+
+```python
+import asyncio
+from agent_framework_minimax import MiniMaxClient
+
+async def main():
+    client = MiniMaxClient(model="MiniMax-M2.7")
+    response = await client.get_response("Hello! Tell me about yourself.")
+    print(response.messages[0].text)
+
+asyncio.run(main())
+```
+
+### Streaming Example
+
+```python
+import asyncio
+from agent_framework_minimax import MiniMaxClient
+
+async def main():
+    client = MiniMaxClient(model="MiniMax-M2.7")
+    async for update in await client.get_streaming_response("Tell me a short story."):
+        if update.text:
+            print(update.text, end="", flush=True)
+    print()
+
+asyncio.run(main())
+```
+
+### Supported Models
+
+| Model | Description |
+|-------|-------------|
+| `MiniMax-M2.7` | Peak Performance. Ultimate Value. Master the Complex |
+| `MiniMax-M2.7-highspeed` | Same performance, faster and more agile |
+
+### API Documentation
+
+- Chat (Anthropic Compatible): https://platform.minimax.io/docs/api-reference/text-anthropic-api

python/packages/minimax/agent_framework_minimax/__init__.py

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+# Copyright (c) Microsoft. All rights reserved.
+
+import importlib.metadata
+
+from ._chat_client import MiniMaxClient, MiniMaxSettings, RawMiniMaxClient
+
+try:
+    __version__ = importlib.metadata.version(__name__)
+except importlib.metadata.PackageNotFoundError:
+    __version__ = "0.0.0"  # Fallback for development mode
+
+__all__ = [
+    "MiniMaxClient",
+    "MiniMaxSettings",
+    "RawMiniMaxClient",
+    "__version__",
+]