Release v1.3.0 — UX polish, traffic-light slider, simpler ruler · ProfRino/crowd-count

What's new since v1.2.0

Toolbar reorganised — Draw zone, Draw obstruction, and Ruler sit on the top row. The shape pill (Polygon / Circle / Rect) appears below only while drawing a zone, and switching it mid-draft mutates the current shape live.
Enter to commit a polygon, obstruction, or ruler polyline.
People and result-bar count freeze while drawing so dragging a circle / rectangle / obstruction no longer makes the numbers jitter. The result lands when you commit the shape.
Crash fix — drawing an obstruction no longer crashes the symbol layer (used to re-sample with degenerate inner rings).
Ruler simplified — single on/off button, polyline-only.
Obstruction help banner — "Click inside the selected zone…" appears the moment you press Draw obstruction.
Traffic-light density slider — black thumb up to 4 ppl/m², amber 4–6, red above 6. The unfilled track stays light grey on all three (was turning dark on amber/red in Chrome).
Satellite toggle aligned with the OSM attribution circle in the bottom-right corner.
About panel — added Source code, MIT License section, Citation block, and © 2026 Rino Lovreglio · Massey University footer. Removed the dramatic "crush regime" warnings from About and the per-zone banner.

Online: https://profrino.github.io/crowd-count/
Offline: download crowd-count.html below, save it anywhere, double-click it.

Lovreglio, R. Crowd Count. Massey University. https://github.com/ProfRino/crowd-count