SpeedNet v5: corrected 790 m indoor supervision, multi-seed selection, per-mode evaluation, four GPS-verified demo videos

remove v4 artifact assets/example_indoor.png

remove v4 artifact assets/example_atv.png

remove v4 artifact assets/demo_bestlap.mp4

demo: world-locked painted ideal line (IMU camera yaw)

demo: painted ideal-line AR on asphalt

demo: AR ideal+driven lines on track + dual-line minimap

demo: checker node refined from multi-lap video detection (u=0.755)

demo: multi-point calibrated minimap position

demo: calibrated live position on ideal-line minimap

demo: ideal-line minimap with live position in HUD

demo video: English HUD

add telemetry demo video (fastest lap, physics-fused HUD)

SpeedNet v4 release: weights, self-contained inference, full docs, examples