Editor grid dots are a hint: mute both levels (0.35 / 0.5)

The adaptive grid drew at full strength — on the white paper of a drawn
plan the dots argued with the walls instead of guiding them. Both levels
are dimmed, the CAD hierarchy kept: fine dots 0.75 -> 0.35, coarse nodes
1 -> 0.5, so the accents still carry the scale reference on the dark
scene background. Editors only; View draws no grid (smoke_grid_fade).

src/styles.ts

@@ -1061,9 +1061,12 @@ export const cardStyles = css`
       stroke-width: 3;
       fill: rgba(255, 193, 77, 0.25);
     }
+    /* Owner 2026-08-04: the grid is a HINT, not content — at full strength the
+       dots argued with the plan on white paper. Both levels are muted, the
+       hierarchy is kept (major still denser than fine). */
     .griddot {
       fill: var(--hp-accent);
-      opacity: 0.75;
+      opacity: 0.35;
       stroke: rgba(0, 0, 0, 0.35);
       stroke-width: 0.4;
     }
@@ -1071,7 +1074,7 @@ export const cardStyles = css`
        bigger, more opaque dot, so zoomed far out the grid still reads as a
        grid instead of a grey wash. */
     .griddot.major {
-      opacity: 1;
+      opacity: 0.5;
       stroke-width: 0;
     }
     .seg {