[BUG] Incompatible with Python >= 3.14 #305

Describe the bug
VectorCode fails to run when Python version is 3.14 or greater

To Reproduce

1. Install Python 3.14 (uv python install 3.14)
2. Install VectorCode (uv tool install "vectorcode<1.0.0")
3. Run vectorcode
4. See this error:

   /Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/vectorcode/main.py:120: SyntaxWarning: 'return' in a 'finally' block
    return return_val
   Traceback (most recent call last):
    File "/Users/xyz/.local/bin/vectorcode", line 4, in <module>
    from vectorcode.main import main
    File "/Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/vectorcode/main.py", line 17, in <module>
    from vectorcode.common import ClientManager
    File "/Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/vectorcode/common.py", line 15, in <module>
    import chromadb
    File "/Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/chromadb/__init__.py", line 2, in <module>
    import chromadb.config
    File "/Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/chromadb/config.py", line 1, in <module>
    from pydantic import BaseSettings
    File "/Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/pydantic/__init__.py", line 437, in __getattr__
    return _getattr_migration(attr_name)
    File "/Users/xyz/.local/share/uv/tools/vectorcode/lib/python3.14/site-packages/pydantic/_migration.py", line 304, in wrapper
    raise PydanticImportError(
    ...<3 lines>...
    )
   pydantic.errors.PydanticImportError: `BaseSettings` has been moved to the `pydantic-settings` package. See https://docs.pydantic.dev/2.12/migration/#basesettings-has-moved-to-pydantic-settings for more details.
   For further information visit https://errors.pydantic.dev/2.12/u/import-error
   

5. I did uv python install 3.13, reinstalled VectorCode, and it now works.

Expected behavior

VectorCode should not fail.

System Information:

macOS 26.1 on Apple Silicon