cce init fails when sqllite3.enable_load_extension is missing

[carterwickstrom-mapache]

What happened?

Running cce init on my repo resulted in the following exception:

[full stack trace omitted for clarity]
File "/Users/carterwickstrom/.local/share/uv/tools/code-context-engine/lib/python3.14/site-packages/context_engine/storage/vector_store.py", line 49, in _connect
conn.enable_load_extension(True)
^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'sqlite3.Connection' object has no attribute 'enable_load_extension'

What did you expect?

Expected indexing to work.

Steps to reproduce

cce init crashes during indexing because CCE's vector store calls conn.enable_load_extension(True) on a sqlite3 connection. The Python 3.14 from python.org (at /Library/Frameworks/Python.framework/Versions/3.14/) was compiled without SQLITE_ENABLE_LOAD_EXTENSION, so that attribute doesn't exist.

Homebrew's Python 3.14.4 at /opt/homebrew/bin/python3 does have this support (confirmed callable). The fix is to reinstall cce under that Python.

uv tool install --python /opt/homebrew/bin/python3 --force code-context-engine

re-running cce init indexes the repo.

Relevant logs or error output

Python version

3.14.4

OS

macOS 26.4.1

CCE version

0.4.21

[rajkumarsakthivel]

Fixed in PR #88. Three layers of protection:

1. Preflight check in cce init catches the missing attribute before indexing starts, with a clear error and reinstall command
2. VectorStore._connect raises RuntimeError with specific fix instructions
3. memory/db._try_load_vec logs a warning and degrades gracefully

The root cause is python.org macOS installers compiling without SQLITE_ENABLE_LOAD_EXTENSION. Homebrew Python includes it. The error message now tells users exactly what to run:

brew install python3
uv tool install --python /opt/homebrew/bin/python3 --force code-context-engine

Thanks for reporting with the clear repro steps and workaround.