Simplify UI integration

Fix hybird bug, center timeline, glasses warning in intro pop-up, eye gaze warning pop-up, help page update.

Merge origin/hugging_face_final into hugging_face_final

fix: eye gaze toggle now properly controls gaze line visibility

feat: switch eye gaze to score-based fusion

feat: sync integration updates across app and ML pipeline

feat: UI nav, onboarding, L2CS weights path + torch.load; trim dev files

feat: UI nav, onboarding, L2CS weights path + torch.load; trim dev files

Integrate L2CS-Net gaze estimation

Integrate L2CS-Net gaze estimation

MERGE EVERYTHING from feature/integration-cleaned :((((((((((((((((((((((((((((((((((((((((((((((( so tired

MERGE EVERYTHING from feature/integration-cleaned :((((((((((((((((((((((((((((((((((((((((((((((( so tired

evaluation: channel ablation script + feature importance LOPO

evaluation: channel ablation script + feature importance LOPO

chore: integration cleanup — remove eye CNN, add threshold justification, fix pipeline

chore: integration cleanup — remove eye CNN, add threshold justification, fix pipeline

Merge UI Manually (expect main)

Merge UI Manually (expect main)

Put all the models together (expect UI)

Put all the models together (expect UI)