Live round 2 (the real bug): every nature-overlay marker size was a raw
screen-space constant drawn inside _canvas, whose scale IS view_zoom —
at Lendel's orbital fit zoom (0.0063) a 2.2px trunk dot rendered at
~0.014px, invisible; the same code at District's 3.75 zoom produced the
correctly-visible mouth ring, which is why one capture worked and the
headline rung didn't. Fixed via AtlasWindowGeometry.zoom_compensated_
size() (pure, floor-guarded) wired through every radius/line-width;
basin FILL points are positions and correctly stay unscaled. Suspect
tile-mode-rung-detection was ruled out live (granularity_v2=Region
confirmed in tile mode) but pinned with a named regression test anyway.
+8 pure-function tests incl. a numeric pin of the pre-fix magnitude
(<0.02px at orbital zoom); revert-verified by name. Draw-smoke suite
documented as supplementary (the shared SubViewport background harness
can pass vacuously under X11 BadMatch — the pure suite is the gate).
Live round 3 (drive-script bug, no product change): the lead's scratch
drive passed the button LABEL to set_overlay_visible() and the unknown-
id guard silently no-op'd — but the chase banked a real pin:
test_set_overlay_visible_gen_basins_flips_gate_and_redraws_nature_
overlay (draw-counting spy per the cold-start precedent; is_queued_for_
redraw does not exist in this build). Revert-verified.
Basins verified live: 7 Lendel watershed boundaries render at the
ruling's alphas. Suites: viewer 76/76, geometry-nature 42/42, nature-
overlay 22/22, zoom-ladder 50/50, no regressions across the cluster.
Tickets: T-1156
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5
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