bug/deleted-mm-user

[emiliecowen]

• handle deleted mm users; skip document creation
• end-to-end and pytests passing
• requires db re-init, but existing environment is okay

[emiliecowen]

@dygwon review this one second

[emiliecowen]

@dygwon, if you see the follow error during init:
ERROR: | 2026-01-21 17:02:37 | https://chat.il4.dso.mil/api/v4/users/9ok6ijnyntnbmckde1xqy5e1ky request failed: 404 https://chat.il4.dso.mil/api/v4/users/9ok6ijnyntnbmckde1xqy5e1ky request failed: 404 Traceback (most recent call last): File "<frozen runpy>", line 198, in _run_module_as_main File "<frozen runpy>", line 88, in _run_code File "/Users/em23761/repos/caitt/c3po-model-server_wip/app/initial_data.py", line 565, in <module> main() File "/Users/em23761/repos/caitt/c3po-model-server_wip/app/initial_data.py", line 551, in main init_large_objects(db) File "/Users/em23761/repos/caitt/c3po-model-server_wip/app/initial_data.py", line 461, in init_large_objects doc_objs = init_mattermost_documents(db, bot_obj) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/em23761/repos/caitt/c3po-model-server_wip/app/initial_data.py", line 434, in init_mattermost_documents user_obj = crud_mattermost.get_or_create_mm_user_object(db, user_id=uid) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/em23761/repos/caitt/c3po-model-server_wip/app/mattermost/crud/crud_mattermost.py", line 379, in get_or_create_mm_user_object raise HTTPException( fastapi.exceptions.HTTPException: 422: Mattermost user not found init script finished
or these test failures:
tests/aimodels/bertopic/integration/test_train.py FFF [ 9%]

changes in this PR should resolve it. so getting this merged into main is a priority, and then I'll rebase the remaining PRs for you.