feat: Qdrant vector database support

[Anush008]

Description

This PR adds support for using Qdrant as the vector database with AIOS.
Users can configure the vector DB of their choice. Defaults to Chroma as before.

I've also applied some unrelated lint fixes to pass the pre-commit checks.

You can run the integration tests with

docker run -p 6333:6333 -p6334:6334 qdrant/qdrant

python -m unittest tests.modules.test_qdrant_integration

[Anush008]

Hey @BRama10
Just bumping this PR. Please take a look when possible.

[evison]

Can you update the test workflows to add relevant tests for the new functionality you created, and make sure the newly added functions pass all tests? Thanks.

[Anush008]

Hey @evison. Done.

[Anush008]

The tests are skipped if Qdrant is not running.

docker run -p 6333:6333 qdrant/qdrant

You can view the data at http://localhost:6333/dashboard

[Anush008]

Hey @evison. Just bumping this PR.
Please take a look when possible.

[evison]

Code is almost ready to merge, please fix the following errors in the ollama test. Once these errors are fixed the code will be ready to merge.
For details of the test results please refer to: https://github.com/agiresearch/AIOS/actions/runs/17926625181/job/50974434351?pr=506

Thread 3: Completed in 0.20s with response: {"response_class": "llm", "response_message": null, "tool_calls": null, "finished": true, "error": "Connection Error with model 'qwen3:4b'. Could not reach the LLM service.", "status_code": 503}

Thread 1: Completed in 0.20s with response: {"response_class": "llm", "response_message": null, "tool_calls": null, "finished": true, "error": "Connection Error with model 'qwen3:4b'. Could not reach the LLM service.", "status_code": 503}

======================================================================
FAIL: test_ollama_different_models (tests.modules.llm.ollama.test_concurrent.TestConcurrentOllamaQueries)
Case 2: Queries specify different Ollama models (mixing qwen3:1.7b and qwen3:4b).
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/runner/work/AIOS/AIOS/tests/modules/llm/ollama/test_concurrent.py", line 126, in test_ollama_different_models
    self._verify_response(result, "Different Ollama Models", i)
  File "/home/runner/work/AIOS/AIOS/tests/modules/llm/ollama/test_concurrent.py", line 68, in _verify_response
    self.assertEqual(status, 200, f"Request {index} ({test_name}) should succeed, but failed with status {status}")
AssertionError: 503 != 200 : Request 1 (Different Ollama Models) should succeed, but failed with status 503
======================================================================
FAIL: test_ollama_some_specified_different_models (tests.modules.llm.ollama.test_concurrent.TestConcurrentOllamaQueries)
Case 4: Some queries specify different Ollama models, others don't specify any model.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/runner/work/AIOS/AIOS/tests/modules/llm/ollama/test_concurrent.py", line 193, in test_ollama_some_specified_different_models
    self._verify_response(result, "Some Specified Different Models", i)
  File "/home/runner/work/AIOS/AIOS/tests/modules/llm/ollama/test_concurrent.py", line 68, in _verify_response
    self.assertEqual(status, 200, f"Request {index} ({test_name}) should succeed, but failed with status {status}")
AssertionError: 503 != 200 : Request 2 (Some Specified Different Models) should succeed, but failed with status 503
----------------------------------------------------------------------

[Anush008]

Hello @evison. Those seem unrelated to this PR.

You can see the same error logs in #507 too.