Major UI overhaul: bigger icons, creative inventory tabs, grouped smelting, alerts popup, analytics, mod icons

- Inventory: Bigger item icons (48px) filling their slots, MC-style hover tooltips
- Creative inventory category tabs (All/Blocks/Tools/Combat/Food/Redstone/Materials/Misc)
- Smelting recipes grouped by output item with collapsible sections
- Alerts moved from full tab to popup overlay triggered from header bell icon
- New Analytics tab with SVG charts (storage over time, top items, item trend lookup)
- Mod icon support for ComputerCraft (CC:Tweaked) via GitHub CDN fallback
- Server: new /api/history-summary endpoint for aggregate storage history
- Store: fetchHistorySummary and fetchItemHistory for analytics data

web/client/src/store/inventoryStore.js

@@ -35,6 +35,8 @@ export const useInventoryStore = create((set, get) => ({
   lastUpdate: 0,
   searchQuery: '',
   commandResult: null,
+  historySummary: [],
+  itemHistory: {},
 
   // Fetch state via HTTP API (fallback / initial load)
   fetchState: async () => {
@@ -233,4 +235,30 @@ export const useInventoryStore = create((set, get) => ({
       return { success: false, error: error.message };
     }
   },
+
+  // Analytics - fetch aggregate storage history
+  fetchHistorySummary: async () => {
+    try {
+      const response = await fetch(`${API_URL}/history-summary`);
+      if (!response.ok) return;
+      const data = await response.json();
+      set({ historySummary: data.history || [] });
+    } catch (error) {
+      console.error('❌ Error fetching history summary:', error);
+    }
+  },
+
+  // Analytics - fetch single item history
+  fetchItemHistory: async (itemName) => {
+    try {
+      const response = await fetch(`${API_URL}/history/${encodeURIComponent(itemName)}?limit=200`);
+      if (!response.ok) return;
+      const data = await response.json();
+      set((state) => ({
+        itemHistory: { ...state.itemHistory, [itemName]: data.history || [] },
+      }));
+    } catch (error) {
+      console.error('❌ Error fetching item history:', error);
+    }
+  },
 }));