fix: critical boolean compatibility for PostgreSQL/SQLite

Fixed boolean value handling differences between databases:
- SQLite stores booleans as 0/1, PostgreSQL as true/false
- Add formatBoolean() calls to critical queries that were failing

Files fixed:
- adminEvents.js: Fixed status filters and archive queries
- adminDashboard.js: Fixed active/archived event counts
- expirationChecker.js: Fixed expiration checking queries
- dbCompat.js: Updated to avoid circular dependency

Added migration 024 to:
- Enable foreign keys for SQLite (PRAGMA foreign_keys = ON)
- Document boolean compatibility requirements

This fixes queries returning 0 results in SQLite when checking
boolean columns like is_active, is_archived. Critical for
proper event management and expiration handling.

Note: 23 more boolean comparisons remain to be fixed in other files.

backend/src/routes/adminDashboard.js

@@ -2,6 +2,7 @@ const express = require('express');
 const { db } = require('../database/db');
 const { adminAuth } = require('../middleware/auth-enhanced-v2');
 const { sanitizeDays, addDateRangeCondition } = require('../utils/sqlSecurity');
+const { formatBoolean } = require('../utils/dbCompat');
 const router = express.Router();
 
 // Get dashboard statistics
@@ -9,8 +10,8 @@ router.get('/stats', adminAuth, async (req, res) => {
   try {
     // Get active events count
     const activeEvents = await db('events')
-      .where('is_active', true)
-      .where('is_archived', false)
+      .where('is_active', formatBoolean(true))
+      .where('is_archived', formatBoolean(false))
       .count('id as count')
       .first();
 
@@ -20,8 +21,8 @@ router.get('/stats', adminAuth, async (req, res) => {
     const now = new Date();
     
     const expiringEvents = await db('events')
-      .where('is_active', true)
-      .where('is_archived', false)
+      .where('is_active', formatBoolean(true))
+      .where('is_archived', formatBoolean(false))
       .where('expires_at', '<=', sevenDaysFromNow.toISOString())
       .where('expires_at', '>', now.toISOString())
       .count('id as count')
@@ -56,7 +57,7 @@ router.get('/stats', adminAuth, async (req, res) => {
 
     // Get archived events count
     const archivedEvents = await db('events')
-      .where('is_archived', true)
+      .where('is_archived', formatBoolean(true))
       .count('id as count')
       .first();