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/middleware/photoAuth.js

@@ -1,6 +1,7 @@
 const bcrypt = require('bcrypt');
 const jwt = require('jsonwebtoken');
 const { db } = require('../database/db');
+const { formatBoolean } = require('../utils/dbCompat');
 
 async function photoAuth(req, res, next) {
   try {
@@ -27,7 +28,7 @@ async function photoAuth(req, res, next) {
         if (decoded.type === 'gallery') {
           // For thumbnails, we accept any valid gallery token
           if (!eventSlug) {
-            const event = await db('events').where({ slug: decoded.eventSlug, is_active: true }).first();
+            const event = await db('events').where({ slug: decoded.eventSlug, is_active: formatBoolean(true) }).first();
             if (event) {
               req.event = event;
               return next();
@@ -35,7 +36,7 @@ async function photoAuth(req, res, next) {
           }
           // For regular photos, check if token matches the event
           else if (decoded.eventSlug === eventSlug) {
-            const event = await db('events').where({ slug: eventSlug, is_active: true }).first();
+            const event = await db('events').where({ slug: eventSlug, is_active: formatBoolean(true) }).first();
             if (event) {
               req.event = event;
               return next();
@@ -72,7 +73,7 @@ async function photoAuth(req, res, next) {
       return res.status(401).json({ error: 'Authentication required for thumbnails' });
     }
     
-    const event = await db('events').where({ slug: eventSlug, is_active: true }).first();
+    const event = await db('events').where({ slug: eventSlug, is_active: formatBoolean(true) }).first();
     if (!event) {
       return res.status(404).json({ error: 'Gallery not found' });
     }