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 <noreply@anthropic.com>

backend/src/routes/adminArchives.js

@@ -2,6 +2,7 @@ const express = require('express');
 const path = require('path');
 const fs = require('fs').promises;
 const { db } = require('../database/db');
+const { formatBoolean } = require('../utils/dbCompat');
 const { adminAuth } = require('../middleware/auth-enhanced-v2');
 const archiver = require('archiver');
 const AdmZip = require('adm-zip');
@@ -16,7 +17,7 @@ router.get('/', adminAuth, async (req, res) => {
 
     // Get total count
     const totalCount = await db('events')
-      .where('is_archived', true)
+      .where('is_archived', formatBoolean(true))
       .count('id as count')
       .first();
 
@@ -28,7 +29,7 @@ router.get('/', adminAuth, async (req, res) => {
         db.raw('SUM(photos.size_bytes) as total_size')
       )
       .leftJoin('photos', 'events.id', 'photos.event_id')
-      .where('events.is_archived', true)
+      .where('events.is_archived', formatBoolean(true))
       .groupBy('events.id')
       .orderBy('events.archived_at', 'desc')
       .limit(limit)
@@ -84,7 +85,7 @@ router.get('/:id', adminAuth, async (req, res) => {
   try {
     const archive = await db('events')
       .where('id', req.params.id)
-      .where('is_archived', true)
+      .where('is_archived', formatBoolean(true))
       .first();
 
     if (!archive) {
@@ -140,7 +141,7 @@ router.post('/:id/restore', adminAuth, async (req, res) => {
   try {
     const archive = await db('events')
       .where('id', req.params.id)
-      .where('is_archived', true)
+      .where('is_archived', formatBoolean(true))
       .first();
 
     if (!archive) {
@@ -303,7 +304,7 @@ router.get('/:id/download', adminAuth, async (req, res) => {
   try {
     const archive = await db('events')
       .where('id', req.params.id)
-      .where('is_archived', true)
+      .where('is_archived', formatBoolean(true))
       .first();
 
     if (!archive) {
@@ -352,7 +353,7 @@ router.delete('/:id', adminAuth, async (req, res) => {
   try {
     const archive = await db('events')
       .where('id', req.params.id)
-      .where('is_archived', true)
+      .where('is_archived', formatBoolean(true))
       .first();
 
     if (!archive) {