diff --git a/TODO.md b/TODO.md
index fb749aa..fa3c6b0 100644
--- a/TODO.md
+++ b/TODO.md
@@ -57,6 +57,8 @@
 - [x] Update Dispatcher to render full pages (head + header + view + footer) instead of requiring bootstrap
 - [x] Ensure admin/index.php bootstraps its own path (not affected by front controller)
 
+- [x] Fix config/config.php path mess — inline getDatabasePath() into Database.php, delete config/config.php
+
 ### Phase 3: Server config
 - [ ] Update router.php — route all PHP requests to Dispatcher
 - [ ] Update nginx config — point all public routes to index.php via try_files
diff --git a/app/src/Database.php b/app/src/Database.php
index 9b74da2..bc604f4 100644
--- a/app/src/Database.php
+++ b/app/src/Database.php
@@ -1,7 +1,5 @@
 <?php
 
-require_once __DIR__ . '/../../config/config.php';
-
 /**
  * Unified Database connection class for Post-ERG thesis database
  * Combines functionality from both front-backend and formulaire
@@ -36,18 +34,25 @@ class Database {
     }
 
     /**
-     * Determine database path
-     * Uses centralized config from config.php
-     * Priority: custom path > config.php settings
+     * Determine database path.
+     * Priority: explicit override → DB_ENV env-var → sapi auto-detect.
+     * APP_ROOT is defined by bootstrap.php before any controller loads Database.
      */
-    private function determineDatabasePath($customPath = null) {
-        // Allow explicit override
+    private function determineDatabasePath($customPath = null): string {
         if ($customPath !== null && file_exists($customPath)) {
             return $customPath;
         }
 
-        // Use centralized configuration
-        return getDatabasePath();
+        $root    = defined('APP_ROOT') ? APP_ROOT : __DIR__ . '/..';
+        $testDb  = $root . '/storage/test.db';
+        $prodDb  = $root . '/storage/posterg.db';
+
+        $env = getenv('DB_ENV');
+        if ($env === 'test') return $testDb;
+        if ($env === 'prod') return $prodDb;
+
+        // php -S (dev server) → test DB; everything else (nginx/fpm) → prod DB
+        return php_sapi_name() === 'cli-server' ? $testDb : $prodDb;
     }
 
     /**
diff --git a/app/storage/test.db b/app/storage/test.db
index b66f21a..6215a6b 100644
Binary files a/app/storage/test.db and b/app/storage/test.db differ
diff --git a/config/config.php b/config/config.php
deleted file mode 100644
index 1cce3ac..0000000
--- a/config/config.php
+++ /dev/null
@@ -1,49 +0,0 @@
-<?php
-
-/**
- * Configuration for Post-ERG thesis database
- * Central location for database paths and environment settings
- */
-
-// Database paths relative to repository root
-define('DB_ROOT', __DIR__ . '/..');
-
-// Local dev database (php -S, never committed)
-define('DB_TEST_PATH', DB_ROOT . '/app/storage/test.db');
-
-// Production database (nginx/php-fpm on server)
-define('DB_PROD_PATH', DB_ROOT . '/app/storage/posterg.db');
-
-/**
- * Determine which database to use.
- *
- * - php built-in server (php -S …)  → storage/test.db   (local dev)
- * - everything else (nginx/fpm)     → storage/posterg.db (production)
- *
- * The DB_ENV env-var can still override either way:
- *   DB_ENV=test  → force test.db
- *   DB_ENV=prod  → force posterg.db
- */
-function getDatabasePath(): string {
-    $env = getenv('DB_ENV');
-    if ($env === 'test') {
-        return DB_TEST_PATH;
-    }
-    if ($env === 'prod') {
-        return DB_PROD_PATH;
-    }
-
-    // Auto-detect: php built-in CLI server == local development
-    if (php_sapi_name() === 'cli-server') {
-        return DB_TEST_PATH;
-    }
-
-    return DB_PROD_PATH;
-}
-
-/**
- * Check if running in local dev mode
- */
-function isTestMode(): bool {
-    return getDatabasePath() === DB_TEST_PATH;
-}