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/utils/dbCompat.js

@@ -3,7 +3,8 @@
  * Handles differences between PostgreSQL and SQLite
  */
 
-const { db } = require('../database/db');
+// Note: Requiring db here creates circular dependency
+// db should be passed as parameter or required where needed
 
 /**
  * Get database client type
@@ -58,10 +59,11 @@ function addDays(date, days) {
 
 /**
  * Get date extraction SQL that works on both databases
+ * @param {object} db - Knex database instance
  * @param {string} column - Column name
  * @returns {object} Knex raw query
  */
-function dateExtractSQL(column) {
+function dateExtractSQL(db, column) {
   if (isPostgreSQL()) {
     return db.raw(`DATE(${column})`);
   } else {
@@ -72,10 +74,11 @@ function dateExtractSQL(column) {
 
 /**
  * Get database size query
+ * @param {object} db - Knex database instance
  * @param {string} dbName - Database name
  * @returns {Promise<number>} Size in bytes
  */
-async function getDatabaseSize(dbName) {
+async function getDatabaseSize(db, dbName) {
   if (isPostgreSQL()) {
     const result = await db.raw('SELECT pg_database_size(?) as size', [dbName]);
     return result.rows[0]?.size || 0;