Can't run this twice

[maschinenzeitmaschine]

Describe the bug
I can install and run this successfully. However, if I then stop (ctrl+c) and start again, it hangs at "Checking for missing embeddings..."

To Reproduce
Steps to reproduce the behavior:

git clone https://github.com/obra/private-journal-mcp.git
cd private-journal-mcp
npm install
npm run build
npm start

… abort with ctrl+c
npm start

Expected behavior
It should run successfully also on the second start.

Additional context
I checked for running processes with ps aux | grep node but nothing.
Also I deleted or replaced .private-journal with its original version, but that didn't help either.
If I delete the whole private-journal-mcp folder and clone and install again, it runs again (once).

Super cool project by the way, I'd love to play around with this! :)

[maschinenzeitmaschine]

Update: I just tried to only delete .private-journal/2025-05-27/*.embedding and now it can run a second time... Maybe it tries not only to embed the .md but also the .embedding files if they're there?

[obra]

Root cause identified: @xenova/transformers uses file-based locking in ~/.cache/huggingface/hub/.locks/ to coordinate model access. When ctrl+c kills the process during model loading, these lock files are left behind in a stale state. The next run hangs indefinitely trying to acquire locks held by a process that no longer exists.

Workaround: Delete the stale lock files:

rm -rf ~/.cache/huggingface/hub/.locks/models--sentence-transformers--all-MiniLM-L6-v2/

(Alternatively, deleting and re-cloning works because it triggers a fresh npm install which resets the @xenova/transformers cache.)

Working on a fix to add a timeout to model initialization on startup so this can't hang the server indefinitely.