fix: comprehensive boolean compatibility for PostgreSQL and SQLite

- Add formatBoolean() usage to all boolean database queries
- Fix 36 boolean comparisons across 18 backend files
- Ensure compatibility between SQLite (0/1) and PostgreSQL (true/false)
- Update all WHERE clauses and UPDATE operations with boolean values

This completes the database compatibility fixes for production deployment.
All boolean operations now work correctly with both database systems.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

backend/src/routes/events.js

@@ -3,6 +3,7 @@ const { body, validationResult } = require('express-validator');
 const bcrypt = require('bcrypt');
 const crypto = require('crypto');
 const { db } = require('../database/db');
+const { formatBoolean } = require('../utils/dbCompat');
 const { adminAuth } = require('../middleware/auth-enhanced-v2');
 const fs = require('fs').promises;
 const path = require('path');
@@ -113,9 +114,9 @@ router.get('/', adminAuth, async (req, res) => {
     let query = db('events').select('*');
     
     if (status === 'active') {
-      query = query.where('is_active', true);
+      query = query.where('is_active', formatBoolean(true));
     } else if (status === 'archived') {
-      query = query.where('is_archived', true);
+      query = query.where('is_archived', formatBoolean(true));
     }
     
     const events = await query.orderBy('created_at', 'desc');
@@ -162,7 +163,7 @@ router.delete('/:id', adminAuth, async (req, res) => {
   try {
     const { id } = req.params;
     
-    await db('events').where('id', id).update({ is_active: false });
+    await db('events').where('id', id).update({ is_active: formatBoolean(false) });
     
     res.json({ success: true });
   } catch (error) {
@@ -188,7 +189,7 @@ router.post('/:id/extend', adminAuth, [
     
     await db('events').where('id', id).update({ 
       expires_at: newExpiration,
-      is_active: true // Reactivate if expired
+      is_active: formatBoolean(true) // Reactivate if expired
     });
     
     res.json({ expires_at: newExpiration });