Python: Add agent-framework-azure-cosmos-memory context provider

python/packages/azure-cosmos-memory/AGENTS.md

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+# Azure Cosmos DB Memory Package (agent-framework-azure-cosmos-memory)
+
+Long-term semantic memory for agents, backed by Azure Cosmos DB via the
+[Azure Cosmos DB Agent Memory Toolkit](https://github.com/AzureCosmosDB/AgentMemoryToolkit).
+
+## Main Classes
+
+- **`CosmosMemoryContextProvider`** - Context provider that integrates Cosmos DB-backed
+  semantic memory (facts, procedural/episodic memories, and user/thread summaries) into agents.
+
+## Usage
+
+```python
+from azure.identity.aio import DefaultAzureCredential
+from agent_framework_azure_cosmos_memory import CosmosMemoryContextProvider
+
+provider = CosmosMemoryContextProvider(
+    cosmos_endpoint="https://<account>.documents.azure.com:443/",
+    cosmos_database="ai_memory",
+    ai_foundry_endpoint="https://<project>.services.ai.azure.com",
+    credential=DefaultAzureCredential(),
+)
+```
+
+## Import Path
+
+```python
+from agent_framework_azure_cosmos_memory import CosmosMemoryContextProvider
+```
+
+## Notes
+
+- Requires the `azure-cosmos-agent-memory` toolkit and an AI Foundry endpoint (used for both
+  embeddings and fact extraction).
+- Set a stable `user_id` in `state["user_id"]` or `session.state["user_id"]` for long-term,
+  cross-session memory. Without it, memory scopes to the ephemeral session id and the provider
+  logs a one-time warning.
+- Background fact extraction runs out-of-band after each turn. Call `provider.flush()` before
+  shutdown so in-flight extraction completes before the client closes.
+- See `README.md` for full configuration, authentication, and processor-tuning options.

python/packages/azure-cosmos-memory/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