feat(dees-statsgrid): add cpuCores tile type with column spanning, rendering, demo and docs

readme.hints.md

@@ -910,4 +910,67 @@ appui.getBottomBarVisible();
 ### Files:
 - `ts_web/elements/00group-appui/dees-appui-bottombar/dees-appui-bottombar.ts` - Main component
 - `ts_web/elements/00group-appui/dees-appui-bottombar/dees-appui-bottombar.demo.ts` - Demo
-- `ts_web/elements/interfaces/appconfig.ts` - New interfaces added
+- `ts_web/elements/interfaces/appconfig.ts` - New interfaces added
+
+## StatsGrid Enhancements (2026-01-12)
+
+### Column Spanning
+
+Tiles can now span multiple columns using the `columnSpan` property. This is useful for wider visualizations like the CPU cores tile.
+
+```typescript
+const tile: IStatsTile = {
+  id: 'wide-tile',
+  title: 'Wide Tile',
+  value: 100,
+  type: 'cpuCores',
+  columnSpan: 2,  // Spans 2 columns
+  coresData: [...]
+};
+```
+
+Note: On smaller screens where only 1 column fits, tiles will automatically fall back to single column width.
+
+### CPU Cores Tile Type
+
+New tile type `cpuCores` for visualizing multi-core CPU usage with vertical bars:
+
+```typescript
+interface ICpuCore {
+  id: string | number;
+  usage: number;  // 0-100
+  label?: string;
+}
+
+const cpuTile: IStatsTile = {
+  id: 'cpu-cores',
+  title: 'CPU Cores',
+  value: 0,  // Not used, avg is calculated from coresData
+  type: 'cpuCores',
+  icon: 'lucide:cpu',
+  columnSpan: 2,  // Recommended for 8+ cores
+  coresData: [
+    { id: 0, usage: 45, label: '0' },
+    { id: 1, usage: 72, label: '1' },
+    // ... more cores
+  ],
+  description: 'Intel i7 - 8 cores'
+};
+```
+
+Features:
+- Vertical bars showing individual core usage
+- Color-coded: green (<50%), yellow (50-80%), red (>80%)
+- Shows average usage in header
+- Core labels shown for 16 or fewer cores
+- Tooltips show exact usage per core
+- Responsive: bars flex to fill available width
+
+### Available Tile Types:
+- `number` - Simple numeric display
+- `gauge` - Semi-circular gauge with thresholds
+- `percentage` - Progress bar (0-100%)
+- `trend` - Sparkline with recent data
+- `text` - Text value display
+- `multiPercentage` - Multiple progress bars
+- `cpuCores` - Vertical bar visualization for CPU cores