fix: 4012 - active model should be gone as soon as cortex.cpp server is killed

[louis-jan]

Describe Your Changes

This PR addresses an issue where the app frontend displays an active running model even after the user forcefully terminates the cortex-server.cpp process through the activity monitor.

Before killing the process

After killing the process

Fixes Issues

• bug: Model status not syncing properly when cortex-server process is killed #4012

1. Whitespace Adjustment:

   • A line containing only whitespace was modified. An unnecessary trailing whitespace was removed on line 71.

2. Event Emission on WebSocket Closure:

   • A new line was added after the console.log('WebSocket closed:', event) within the this.socket.onclose function. The new line emits an event ModelEvent.OnModelStopped with an empty object ({}) as the payload. This likely triggers logic elsewhere in the application when a WebSocket connection is closed.

[github-actions]

Barecheck - Code coverage report

Total: 69.18%

Your code coverage diff: 0.00% ▴

✅ All code changes are covered

[louis-jan]

Feature build:
https://github.com/janhq/jan/actions/runs/12031014560