refactor: remove verbose debug logging from cospend API endpoints

Removed excessive console.log statements from recurring payments processing and monthly expenses aggregation. Error logging (console.error) is retained for troubleshooting.

src/routes/api/cospend/monthly-expenses/+server.ts

@@ -77,7 +77,6 @@ export const GET: RequestHandler = async ({ url, locals }) => {
     ];
 
     const results = await Payment.aggregate(pipeline);
-    console.log('Aggregation results:', results);
 
     // Transform data into chart-friendly format
     const monthsMap = new Map();

src/routes/api/cospend/recurring-payments/cron-execute/+server.ts

@@ -21,7 +21,6 @@ export const POST: RequestHandler = async ({ request }) => {
 
   try {
     const now = new Date();
-    console.log(`[Cron] Starting recurring payments processing at ${now.toISOString()}`);
 
     // Find all active recurring payments that are due
     const duePayments = await RecurringPayment.find({
@@ -34,16 +33,12 @@ export const POST: RequestHandler = async ({ request }) => {
       ]
     });
 
-    console.log(`[Cron] Found ${duePayments.length} due recurring payments`);
-
     const results = [];
     let successCount = 0;
     let failureCount = 0;
 
     for (const recurringPayment of duePayments) {
       try {
-        console.log(`[Cron] Processing recurring payment: ${recurringPayment.title} (${recurringPayment._id})`);
-
         // Create the payment
         const payment = await Payment.create({
           title: `${recurringPayment.title} (Auto)`,
@@ -89,8 +84,6 @@ export const POST: RequestHandler = async ({ request }) => {
           success: true
         });
 
-        console.log(`[Cron] Successfully processed: ${recurringPayment.title}, next execution: ${nextExecutionDate.toISOString()}`);
-
       } catch (paymentError) {
         console.error(`[Cron] Error processing recurring payment ${recurringPayment._id}:`, paymentError);
         failureCount++;
@@ -104,8 +97,6 @@ export const POST: RequestHandler = async ({ request }) => {
       }
     }
 
-    console.log(`[Cron] Completed processing. Success: ${successCount}, Failures: ${failureCount}`);
-
     return json({ 
       success: true,
       timestamp: now.toISOString(),

src/routes/api/cospend/recurring-payments/scheduler/+server.ts

@@ -33,7 +33,6 @@ export const POST: RequestHandler = async ({ request, locals }) => {
 
     switch (action) {
       case 'execute':
-        console.log(`[API] Manual execution requested by ${auth.user.nickname}`);
         await recurringPaymentScheduler.executeNow();
         return json({
           success: true,