fix: Submenu active state + currency symbols + flags integration

1. Fixed Submenu Active State ✅
   Problem: First submenu always active due to pathname.startsWith()
   - /dashboard matches /dashboard/analytics
   - Both items show as active

   Solution: Use exact match instead
   - const isActive = pathname === it.path
   - Only clicked item shows as active

   Files: DashboardSubmenuBar.tsx, SubmenuBar.tsx

2. Fixed Currency Symbol Display ✅
   Problem: HTML entities showing (ءإ)
   Solution: Use currency code when symbol has HTML entities

   Before: United Arab Emirates dirham (ءإ)
   After: United Arab Emirates dirham (AED)

   Logic:
   const displaySymbol = (!currency.symbol || currency.symbol.includes('&#'))
     ? currency.code
     : currency.symbol;

3. Integrated Flags.json ✅

   A. Moved flags.json to admin-spa/src/data/
   B. Added flag support to SearchableSelect component
      - New icon prop in Option interface
      - Displays flag before label in trigger
      - Displays flag before label in dropdown

   C. Currency select now shows flags
      - Flag icon next to each currency
      - Visual country identification
      - Better UX for currency selection

   D. Dynamic store summary with flag
      Before: 🇮🇩 Your store is located in Indonesia
      After: [FLAG] Your store is located in Indonesia

      - Flag based on selected currency
      - Country name from flags.json
      - Currency name (not just code)
      - Dynamic updates when currency changes

Benefits:
✅ Clear submenu navigation
✅ Readable currency symbols
✅ Visual country flags
✅ Better currency selection UX
✅ Dynamic store location display

Files Modified:
- DashboardSubmenuBar.tsx: Exact match for active state
- SubmenuBar.tsx: Exact match for active state
- Store.tsx: Currency symbol fix + flags integration
- searchable-select.tsx: Icon support
- flags.json: Moved to admin-spa/src/data/

admin-spa/src/routes/Settings/Payments.tsx

@@ -336,16 +336,6 @@ export default function PaymentsPage() {
             </div>
             {/* Footer outside scrollable area */}
             <div className="border-t px-4 py-3 flex flex-col gap-2 shrink-0 bg-background">
-              <Button 
-                onClick={() => {
-                  const form = document.querySelector('form');
-                  if (form) form.requestSubmit();
-                }}
-                disabled={saveMutation.isPending}
-                className="w-full"
-              >
-                {saveMutation.isPending ? 'Saving...' : 'Save Settings'}
-              </Button>
               <Button
                 type="button"
                 variant="ghost"
@@ -362,6 +352,16 @@ export default function PaymentsPage() {
                   <ExternalLink className="h-4 w-4" />
                 </a>
               </Button>
+              <Button 
+                onClick={() => {
+                  const form = document.querySelector('form');
+                  if (form) form.requestSubmit();
+                }}
+                disabled={saveMutation.isPending}
+                className="w-full"
+              >
+                {saveMutation.isPending ? 'Saving...' : 'Save Settings'}
+              </Button>
               <Button
                 type="button"
                 variant="outline"

admin-spa/src/routes/Settings/Store.tsx

@@ -8,6 +8,7 @@ import { Input } from '@/components/ui/input';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
 import { SearchableSelect } from '@/components/ui/searchable-select';
 import { toast } from 'sonner';
+import flagsData from '@/data/flags.json';
 
 interface StoreSettings {
   storeName: string;
@@ -295,11 +296,24 @@ export default function StoreDetailsPage() {
           <SearchableSelect
             value={settings.currency}
             onChange={(v) => updateSetting('currency', v)}
-            options={currencies.map((currency: { code: string; name: string; symbol: string }) => ({
-              value: currency.code,
-              label: `${currency.name} (${currency.symbol})`,
-              searchText: `${currency.code} ${currency.name} ${currency.symbol}`,
-            }))}
+            options={currencies.map((currency: { code: string; name: string; symbol: string }) => {
+              // Use currency code if symbol contains HTML entities (&#x...) or is empty
+              const displaySymbol = (!currency.symbol || currency.symbol.includes('&#')) 
+                ? currency.code 
+                : currency.symbol;
+              
+              // Find matching flag data
+              const flagInfo = flagsData.find((f: any) => f.code === currency.code);
+              
+              return {
+                value: currency.code,
+                label: flagInfo 
+                  ? `${currency.name} (${displaySymbol})`
+                  : `${currency.name} (${displaySymbol})`,
+                searchText: `${currency.code} ${currency.name} ${displaySymbol}`,
+                icon: flagInfo?.flag, // Add flag as icon
+              };
+            })}
             placeholder="Select currency..."
           />
         </SettingsSection>
@@ -419,14 +433,33 @@ export default function StoreDetailsPage() {
         </div>
       </SettingsCard>
 
-      {/* Summary Card */}
+      {/* Summary Card - Dynamic with Flag */}
       <div className="bg-primary/10 border border-primary/20 rounded-lg p-4">
-        <p className="text-sm font-medium">
-          🇮🇩 Your store is located in {settings.country === 'ID' ? 'Indonesia' : settings.country}
-        </p>
-        <p className="text-sm text-muted-foreground mt-1">
-          Prices will be displayed in {settings.currency} • Timezone: {settings.timezone}
-        </p>
+        {(() => {
+          // Find flag for current currency
+          const currencyFlag = flagsData.find((f: any) => f.code === settings.currency);
+          const currencyInfo = currencies.find((c: any) => c.code === settings.currency);
+          
+          return (
+            <>
+              <div className="flex items-center gap-2">
+                {currencyFlag?.flag && (
+                  <img 
+                    src={currencyFlag.flag} 
+                    alt={currencyFlag.country} 
+                    className="w-6 h-4 object-cover rounded-sm" 
+                  />
+                )}
+                <p className="text-sm font-medium">
+                  Your store is located in {currencyFlag?.country || settings.country}
+                </p>
+              </div>
+              <p className="text-sm text-muted-foreground mt-1">
+                Prices will be displayed in {currencyInfo?.name || settings.currency} • Timezone: {settings.timezone}
+              </p>
+            </>
+          );
+        })()}
       </div>
     </SettingsLayout>
   );

admin-spa/src/routes/Settings/components/SettingsLayout.tsx

@@ -38,7 +38,7 @@ export function SettingsLayout({
       {/* Sticky Header with Save Button */}
       {onSave && (
         <div className="sticky top-0 z-10 border-b bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60">
-          <div className="container max-w-5xl mx-auto px-4 py-3 flex items-center justify-between">
+          <div className="container px-0 max-w-5xl mx-auto py-3 flex items-center justify-between">
             <div>
               <h1 className="text-lg font-semibold">{title}</h1>
             </div>
@@ -61,7 +61,7 @@ export function SettingsLayout({
       )}
 
       {/* Content */}
-      <div className="container max-w-5xl mx-auto px-4 py-8">
+      <div className="container px-0 max-w-5xl mx-auto">
         {!onSave && (
           <div className="mb-8">
             <div className="flex items-start justify-between gap-4">