Timeline use spawns excessive processes leading to CPU exhaustion and UI lockup

[abn]

Describe the bug
When typing into the "What's on your mind?" box in the timeline, the start_backend.py script appears to spawn an unbounded number of Python processes. This results in a Load Average exceeding 30.0, saturating all 32 CPU cores and eventually causing a complete system/UI freeze.

CPU Saturation: All 32 cores are pegged at 90-100% utilization.
Process Proliferation: Dozens of identical /home/abn/.../python3 .../start_backend.py processes are visible in the process list.
System Impact: Significant UI lag transitioning into a total system lockup.

I am assuming here this has to do with the graph dynamically adjusting.

To Reproduce

1. Open nowledge-mem.
2. Go to Timeline.
3. Type a long sentence manually.

Expected behavior
It works without locking up the system, and there are limits to how many processes are spawned.

Screenshots

[abn]

@wey-gu this one can cause some serious issues, been happening fairly consistently to the point that I have had to resort to typing the text elsewhere and paste it in.