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/gallery.js

@@ -1,6 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 const { db } = require('../database/db');
+const { formatBoolean } = require('../utils/dbCompat');
 const archiver = require('archiver');
 const path = require('path');
 const router = express.Router();
@@ -19,7 +20,7 @@ async function verifyGalleryAccess(req, res, next) {
     
     const decoded = jwt.verify(token, process.env.JWT_SECRET);
     const event = await db('events')
-      .where({ id: decoded.eventId, is_active: true, is_archived: false })
+      .where({ id: decoded.eventId, is_active: formatBoolean(true), is_archived: formatBoolean(false) })
       .first();
     
     if (!event) {
@@ -40,7 +41,7 @@ router.get('/:slug/verify-token/:token', async (req, res) => {
     const { slug, token } = req.params;
     
     const event = await db('events')
-      .where({ slug, is_active: true, is_archived: false })
+      .where({ slug, is_active: formatBoolean(true), is_archived: formatBoolean(false) })
       .select('id', 'share_link')
       .first();
     
@@ -121,7 +122,7 @@ router.get('/:slug/photos', verifyGalleryAccess, async (req, res) => {
     // Get all categories for this event
     const categories = await db('photo_categories')
       .where(function() {
-        this.where('is_global', true)
+        this.where('is_global', formatBoolean(true))
           .orWhere('event_id', req.event.id);
       })
       .orderBy('is_global', 'desc')