[eric] canvas: fullscreen locks canvas panning (drag joined the wheel gate), thirds cut from the tile menus, Applications window gets always-on search + image-only tiles (screenshot > symbol > svg, letters never)

frontend/src/app/pages/Dashboard/cards/tileZones.ts

@@ -3,13 +3,12 @@
 export const ZONE_LABELS: Record<string, string> = {
   fill: 'Fill', left: 'Left half', right: 'Right half', top: 'Top half', bottom: 'Bottom half',
   tl: 'Top left', tr: 'Top right', bl: 'Bottom left', br: 'Bottom right',
-  t3l: 'Left third', t3c: 'Center third', t3r: 'Right third',
 };
 
 // The one grid every tiling surface renders: the green-dot hover menu and the right-click "Tile to
-// zone" submenu both map this, so they can never drift apart on which zones exist.
+// zone" submenu both map this, so they can never drift apart on which zones exist. Thirds were cut
+// (Eric 2026-08-09): the geometry still restores an old t3* card fine, the menus just stop offering it.
 export const TILE_GROUPS: { label: string; zones: string[] }[] = [
   { label: 'Fill and halves', zones: ['fill', 'left', 'right', 'top', 'bottom'] },
   { label: 'Quarters', zones: ['tl', 'tr', 'bl', 'br'] },
-  { label: 'Thirds', zones: ['t3l', 't3c', 't3r'] },
 ];

frontend/src/app/pages/Dashboard/desktop/ApplicationsWindow.tsx

@@ -19,10 +19,11 @@ function hueFor(name: string): number {
   return h % 360;
 }
 
-// Every tile is a generated ICON (gradient + monogram): a screenshot crushed to 68px reads as mud,
-// so the screenshot lives in the hover preview instead and the row stays dock-uniform.
+// Never letters or numbers on a tile (Eric 2026-08-09): the app's own screenshot is the icon; an
+// emoji glyph (a real symbol, not an initial) is the next-best mark; the generic app SVG closes.
 function AppTile({ output }: { output: Output }): React.ReactElement {
   const glyph = (output.icon || '').trim();
+  const glyphIsSymbol = glyph.length > 0 && glyph.length <= 3 && !/[a-z0-9]/i.test(glyph);
   const h = hueFor(output.name || '?');
   return (
     <Box
@@ -34,14 +35,20 @@ function AppTile({ output }: { output: Output }): React.ReactElement {
         alignItems: 'center',
         justifyContent: 'center',
         flexShrink: 0,
+        overflow: 'hidden',
         boxShadow: 'inset 0 0 0 1px rgba(255,255,255,0.14), 0 6px 18px rgba(0,0,0,0.32)',
         background: `linear-gradient(160deg, hsl(${h}, 42%, 52%), hsl(${(h + 24) % 360}, 48%, 34%))`,
-        fontSize: glyph && glyph.length <= 3 ? '1.5rem' : '1.375rem',
-        fontWeight: 590,
+        fontSize: '1.5rem',
         color: 'rgba(255,255,255,0.94)',
       }}
     >
-      {glyph && glyph.length <= 3 ? glyph : (output.name || '?').trim().charAt(0).toUpperCase()}
+      {output.thumbnail ? (
+        <Box component="img" src={output.thumbnail} alt="" sx={{ width: '100%', height: '100%', objectFit: 'cover' }} />
+      ) : glyphIsSymbol ? (
+        glyph
+      ) : (
+        <GridViewRoundedIcon sx={{ fontSize: 30, color: 'rgba(255,255,255,0.92)' }} />
+      )}
     </Box>
   );
 }
@@ -126,7 +133,7 @@ function ApplicationsWindow({ outputs, onOpenApp, onClose }: ApplicationsWindowP
           )}
         </Box>
 
-        {Object.keys(outputs).length > 8 && (
+        {Object.keys(outputs).length > 0 && (
           <Box
             component="input"
             autoFocus

frontend/src/app/pages/Dashboard/hooks/interaction/useCanvasControls.ts

@@ -514,6 +514,9 @@ export function useCanvasControls(
     // tree, not the DOM: without this guard their clicks started a canvas pan and the preventDefault
     // killed input focus (the "can't click into the Add-connector fields" bug).
     if (e.currentTarget instanceof Node && e.target instanceof Node && !e.currentTarget.contains(e.target)) return;
+    // Fullscreen has no canvas nav, period (same rule the wheel handler enforces): a drag that
+    // slipped past the fullscreen surface panned the hidden canvas underneath it.
+    if (selectFullscreenCardId(store.getState())) return;
     e.preventDefault();
     cancelAnimation();
     cancelInertia();