feat: Add currency selection and conversion support in PDF generation, enhance expense processing with target currency handling

components/PDFOptionsModal.vue

@@ -132,8 +132,21 @@
               </v-card>
             </v-col>
 
+            <!-- Currency Selection -->
+            <v-col cols="12" md="6">
+              <v-select
+                v-model="options.targetCurrency"
+                :items="currencyOptions"
+                label="Export Currency"
+                variant="outlined"
+                item-title="text"
+                item-value="value"
+                prepend-inner-icon="mdi-currency-usd"
+              />
+            </v-col>
+
             <!-- Page Format -->
-            <v-col cols="12">
+            <v-col cols="12" md="6">
               <v-select
                 v-model="options.pageFormat"
                 :items="pageFormatOptions"
@@ -222,6 +235,7 @@ interface PDFOptions {
   includeDetails: boolean;
   includeProcessingFee: boolean;
   pageFormat: 'A4' | 'Letter' | 'Legal';
+  targetCurrency: 'USD' | 'EUR';
 }
 
 // Computed dialog model
@@ -243,7 +257,8 @@ const options = ref<PDFOptions>({
   includeSummary: true,
   includeDetails: true,
   includeProcessingFee: true,
-  pageFormat: 'A4'
+  pageFormat: 'A4',
+  targetCurrency: 'EUR'
 });
 
 // Form options
@@ -260,6 +275,11 @@ const pageFormatOptions = [
   { text: 'Legal (8.5 × 14 in)', value: 'Legal' }
 ];
 
+const currencyOptions = [
+  { text: 'Euro (EUR)', value: 'EUR' },
+  { text: 'US Dollar (USD)', value: 'USD' }
+];
+
 // Validation rules
 const rules = {
   required: (value: string) => !!value || 'This field is required'