LGTM

electron-app/src/main/database.ts

@@ -33,6 +33,14 @@ export function initDatabase() {
     )
   `);
   
+  // Create settings table for custom AUEC amount
+  db.exec(`
+    CREATE TABLE IF NOT EXISTS settings (
+      key TEXT PRIMARY KEY,
+      value TEXT NOT NULL
+    )
+  `);
+  
   console.log('Database initialized at:', dbPath);
 }
 
@@ -80,6 +88,26 @@ export function deleteAlert(id: string): void {
   stmt.run(id);
 }
 
+export function getCustomAuecAmount(): number | null {
+  if (!db) throw new Error('Database not initialized');
+  
+  const stmt = db.prepare('SELECT value FROM settings WHERE key = ?');
+  const row = stmt.get('customAuecAmount') as any;
+  
+  return row ? parseFloat(row.value) : null;
+}
+
+export function setCustomAuecAmount(amount: number): void {
+  if (!db) throw new Error('Database not initialized');
+  
+  const stmt = db.prepare(`
+    INSERT OR REPLACE INTO settings (key, value)
+    VALUES (?, ?)
+  `);
+  
+  stmt.run('customAuecAmount', amount.toString());
+}
+
 export function closeDatabase(): void {
   if (db) {
     db.close();