feat(dashboard): redesign Scene Info widget with compact grid layout

Complete redesign of Scene Info widget following UX best practices:

BEFORE:
- Tab-based interface with 5 separate views
- Only 1 data point visible at a time (poor scannability)
- Size: 2×3 (oversized, wasted vertical space)
- Didn't fit in desktop side panel
- Poor information density

AFTER:
- Grid-based layout showing all 5 data points simultaneously
- High information density and scannability
- Compact size: 2×2 (reduced from 2×3)
- Inspired by Apple Widgets / Material Design patterns
- Mobile-responsive with breakpoints at 1000px and 340px
- Zero interaction needed - all data visible at once

Changes:
- sceneInfoWidget.js: Complete rewrite (390→309 lines)
  - Removed tab logic and state management
  - Added data formatting helpers (formatDate, formatTime, etc.)
  - Grid HTML structure with semantic CSS classes
  - Maintained inline editing for all fields
  - Simplified configuration

- style.css: Added comprehensive grid styling (lines 2647-2811)
  - CSS Grid layout with named areas
  - Responsive typography and spacing
  - Hover states and focus styles
  - 2 mobile breakpoints for optimal scaling

- defaultLayout.js: Updated Scene Info widget
  - Changed height: 3→2 rows
  - Adjusted Y positions for widgets below
  - Simplified config (removed view selection)

Design Principles:
- All information visible simultaneously (zero interaction)
- High scannability for quick information gathering
- Proper information density for simple data points
- Grid structure: 2 columns, 3 rows (location full-width header)
- Mobile-first responsive design

Layout:
┌─────────────────────────────────┐
│ 📍 Location                     │
├──────────────────┬──────────────┤
│ 📅 Date          │ 🕐 Time       │
├──────────────────┼──────────────┤
│ 🌤️ Weather       │ 🌡️ Temp       │
└──────────────────┴──────────────┘

style.css

@@ -2644,6 +2644,172 @@ body:has(.rpg-panel.rpg-position-left) #sheld {
     opacity: 1;
 }
 
+/* ============================================================================
+   Scene Info Grid Widget
+   Compact information-dense layout showing all scene data at once
+   ============================================================================ */
+
+.rpg-scene-info-grid {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    grid-template-rows: auto 1fr 1fr;
+    gap: 0.75rem;
+    padding: 1rem;
+    grid-template-areas:
+        "location location"
+        "calendar clock"
+        "weather temperature";
+}
+
+.rpg-info-item {
+    background: var(--rpg-panel);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 0.75rem;
+    padding: 0.75rem;
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    transition: all 0.2s ease;
+}
+
+.rpg-info-item:hover {
+    background: rgba(255, 255, 255, 0.05);
+    border-color: rgba(255, 255, 255, 0.15);
+}
+
+/* Grid area assignments */
+.rpg-info-location {
+    grid-area: location;
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 0.2rem;
+}
+
+.rpg-info-calendar { grid-area: calendar; }
+.rpg-info-clock { grid-area: clock; }
+.rpg-info-weather { grid-area: weather; }
+.rpg-info-temperature { grid-area: temperature; }
+
+/* Icon styling */
+.rpg-info-item .item-icon {
+    font-size: 1.5rem;
+    flex-shrink: 0;
+    line-height: 1;
+}
+
+/* Content layout */
+.rpg-info-item .item-content {
+    display: flex;
+    flex-direction: column;
+    gap: 0.1rem;
+    flex: 1;
+    min-width: 0; /* Prevent overflow */
+}
+
+/* Primary value (large, bold) */
+.rpg-info-item .item-value {
+    font-size: 1.125rem;
+    font-weight: 600;
+    line-height: 1.2;
+    color: var(--rpg-text);
+}
+
+/* Secondary label (small, subdued) */
+.rpg-info-item .item-label {
+    font-size: 0.8125rem;
+    line-height: 1.3;
+    color: var(--rpg-text);
+    opacity: 0.7;
+}
+
+/* Location-specific styling */
+.rpg-info-location .item-value {
+    font-size: 1rem;
+    font-weight: 500;
+}
+
+.rpg-info-location .item-label {
+    font-size: 0.875rem;
+    margin-top: -0.1rem;
+}
+
+/* Editable field styling */
+.rpg-info-item .rpg-editable {
+    cursor: text;
+    padding: 0.15rem 0.3rem;
+    margin: -0.15rem -0.3rem;
+    border-radius: 0.25rem;
+    transition: background 0.15s ease;
+}
+
+.rpg-info-item .rpg-editable:hover {
+    background: rgba(255, 255, 255, 0.05);
+}
+
+.rpg-info-item .rpg-editable:focus {
+    background: rgba(255, 255, 255, 0.1);
+    outline: 1px solid var(--rpg-highlight);
+}
+
+/* Mobile responsive (max-width: 1000px) */
+@media (max-width: 1000px) {
+    .rpg-widget .rpg-scene-info-grid {
+        gap: 0.5rem !important;
+        padding: 0.75rem !important;
+    }
+
+    .rpg-widget .rpg-info-item {
+        padding: 0.6rem !important;
+        gap: 0.6rem !important;
+        border-radius: 0.5rem !important;
+    }
+
+    .rpg-widget .rpg-info-item .item-icon {
+        font-size: 1.25rem !important;
+    }
+
+    .rpg-widget .rpg-info-item .item-value {
+        font-size: 1rem !important;
+    }
+
+    .rpg-widget .rpg-info-item .item-label {
+        font-size: 0.75rem !important;
+    }
+
+    .rpg-widget .rpg-info-location .item-value {
+        font-size: 0.9rem !important;
+    }
+
+    .rpg-widget .rpg-info-location .item-label {
+        font-size: 0.8rem !important;
+    }
+}
+
+/* Extra small mobile (max-width: 340px) */
+@media (max-width: 340px) {
+    .rpg-widget .rpg-scene-info-grid {
+        gap: 0.4rem !important;
+        padding: 0.5rem !important;
+    }
+
+    .rpg-widget .rpg-info-item {
+        padding: 0.5rem !important;
+        gap: 0.5rem !important;
+    }
+
+    .rpg-widget .rpg-info-item .item-icon {
+        font-size: 1.1rem !important;
+    }
+
+    .rpg-widget .rpg-info-item .item-value {
+        font-size: 0.9rem !important;
+    }
+
+    .rpg-widget .rpg-info-item .item-label {
+        font-size: 0.7rem !important;
+    }
+}
+
 /* Character Status Cards */
 .rpg-character-status {
     display: flex;