[Feat] Adaptive debounce: wait for typing pause before firing request

[PyDevC]

File: lua/model_cmp/commands.lua:57

Feature Introduction: Currently uses a fixed delay timer. If the user is typing fast, the request fires mid-word with incomplete context. Adaptive debounce waits for a typing pause and uses the latest cursor position.

Feature Description:

1. If user is typing fast (multiple keystrokes within the delay window), keep resetting the timer
2. When user pauses (no keystrokes for the delay period), fire the request immediately
3. Record the cursor position at fire time (not at first keystroke)

Is your feature possible with the current status of repo? Yes. Simple timer reset logic change in commands.lua.