feat: Implement Eve Online job manager

Create a basic application for managing Eve Online industry jobs, including job details, transaction history, and profit calculations. Implement data ingestion via a form with paste functionality for transaction data.

src/utils/priceUtils.ts

@@ -0,0 +1,74 @@
+
+export const parseISKAmount = (iskString: string): number => {
+  // Remove "ISK" and any extra whitespace
+  const cleanString = iskString.replace(/ISK/gi, '').trim();
+  
+  // Handle negative values
+  const isNegative = cleanString.startsWith('-');
+  const numberString = cleanString.replace(/^-/, '');
+  
+  // Remove commas and parse
+  const amount = parseFloat(numberString.replace(/,/g, ''));
+  
+  return isNegative ? -amount : amount;
+};
+
+export const formatISK = (amount: number): string => {
+  const absAmount = Math.abs(amount);
+  const sign = amount < 0 ? '-' : '';
+  
+  // Format with commas and appropriate decimal places
+  const formatted = absAmount.toLocaleString('en-US', {
+    minimumFractionDigits: 0,
+    maximumFractionDigits: 2
+  });
+  
+  return `${sign}${formatted} ISK`;
+};
+
+export const parseTransactionLine = (line: string): {
+  date: Date;
+  quantity: number;
+  itemName: string;
+  unitPrice: number;
+  totalAmount: number;
+  buyer?: string;
+  location?: string;
+  corporation?: string;
+  wallet?: string;
+} | null => {
+  try {
+    const parts = line.split('\t');
+    if (parts.length < 8) return null;
+    
+    const [dateStr, quantityStr, itemName, unitPriceStr, totalAmountStr, buyer, location, corporation, wallet] = parts;
+    
+    // Parse date (YYYY.MM.DD HH:mm format)
+    const [datePart, timePart] = dateStr.split(' ');
+    const [year, month, day] = datePart.split('.').map(Number);
+    const [hour, minute] = timePart.split(':').map(Number);
+    const date = new Date(year, month - 1, day, hour, minute);
+    
+    // Parse quantity (remove commas)
+    const quantity = parseInt(quantityStr.replace(/,/g, ''));
+    
+    // Parse prices
+    const unitPrice = parseISKAmount(unitPriceStr);
+    const totalAmount = parseISKAmount(totalAmountStr);
+    
+    return {
+      date,
+      quantity,
+      itemName,
+      unitPrice,
+      totalAmount,
+      buyer,
+      location,
+      corporation,
+      wallet
+    };
+  } catch (error) {
+    console.error('Error parsing transaction line:', line, error);
+    return null;
+  }
+};