feat(threat-assessment): implement naval threat analysis with GPT-4o\n\n- Rename utils/gpt_distance.py to utils/gpt_reasoning.py and update logic for 15 naval threat features\n- Add Pydantic schemas for NavalThreatAssessment in utils/schemas.py\n- Update backend (app.py, inference.py) to use new threat estimation and pass full metadata\n- refactor(frontend): render threat level badges and detailed feature table in UI

Fix: IndexError in ByteTracker

feat: replace SimpleTracker with ByteTrack

Add granular logging for frame processing and ffmpeg

fix: Switch to gpt-4o-mini and verified queue safety

feat: Implement SAHI Tiling for 4K video detection

feat: Implement AsyncVideoReader for parallel video decoding

fix: Handle empty GPT responses and log outputs

Feature: GPT distance integration, Radar Map, and optional legacy depth

update:inference pipeline optimization

inital commit