LENGTH is approximate — derived from a fastest lap's own position-telemetry arc length on a community-established (not officially documented by FastF1) decimetre-unit convention, not the official FIA-published circuit length. Expect a few percent of drift from the true published figure. RACE DISTANCE and CORNER SPEED (low/medium/high count) are now shown — corner-speed buckets are a documented judgement call (see app/analysis/track_dna_extended.py), not a measurement. Elevation change and "straights level" remain deliberately unshown — no verifiable source / definition (see v2-tasks.md P1.5/P1.7).