refactor: separate shared “core” code from FastAPI server modules

[filipchristiansen]

Overview

This PR finishes our repository reorganization so that shared “core” logic resides in a core/ subpackage, the FastAPI app code is under server/, and the CLI remains in gitingest/. This clarifies which modules are CLI-specific vs. server-specific vs. general-purpose, and also preserves top-level exports for users who do import gitingest.

Key Changes

1. core/

   • Moved the shared logic: config.py, exceptions.py, ignore_patterns.py, notebook_utils.py, query_ingestion.py, query_parser.py, repository_clone.py, repository_ingest.py, and utils.py.
   • core/__init__.py is no longer exporting public APIs directly, so it’s effectively internal.

2. server/

   • Houses the FastAPI application: main.py, query_processor.py, server_utils.py, routers/, plus static/ and templates/.
   • References to static files and templates are updated to /server/static and /server/templates in main.py, Jinja code, and the routers, ensuring Docker can properly serve them.

3. gitingest/

   • Retains the CLI code (cli.py).
   • Now includes the “top-level exports” in gitingest/__init__.py, so import gitingest still provides run_ingest_query, parse_query, clone_repo, and ingest.

4. Tests

   • Updated test references from gitingest.* to core.* or server.* as appropriate.

5. Docker Compatibility

   • Running docker build -t gitingest . then docker run -d --name gitingest -p 8000:8000 gitingest successfully serves the FastAPI app at http://localhost:8000/, loading static files and templates from server/.

Why These Changes?

• Cleaner Separation: We now have a clearer boundary between the “core” modules, the FastAPI server, and the CLI.
• Consistent Exports: Placing exports in gitingest/__init__.py ensures users can continue to do import gitingest for ingestion functions.
• Correct File Serving: With static and templates inside server/, references needed updating so the app works both locally and in Docker.

Testing

• Manually tested Docker flow: Built the image, ran the container, and verified that http://localhost:8000 shows the updated UI and loads images/styles.
• Tried the UI with a few different repos to confirm the ingestion process works end-to-end.
• Confirmed import gitingest still provides the same top-level functions (run_ingest_query, parse_query, etc.).

Context

Relates to #125.

Terminal CLI Note

The terminal CLI is still broken but has been addressed in this PR: #136.