diff --git a/backend/db.js b/backend/db.js
deleted file mode 100644
index ffae47e..0000000
--- a/backend/db.js
+++ /dev/null
@@ -1,204 +0,0 @@
-const Database = require('better-sqlite3');
-const bcrypt   = require('bcryptjs');
-const path     = require('path');
-
-const db = new Database(process.env.DB_PATH || '/data/dickendock.db');
-db.pragma('journal_mode = WAL');
-db.pragma('foreign_keys = ON');
-
-db.exec(`
-  CREATE TABLE IF NOT EXISTS users (
-    id            INTEGER PRIMARY KEY AUTOINCREMENT,
-    username      TEXT UNIQUE NOT NULL,
-    password_hash TEXT NOT NULL,
-    role          TEXT NOT NULL DEFAULT 'user',
-    created_at    DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-
-  -- Dashboard-Widgets
-  CREATE TABLE IF NOT EXISTS quick_links (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    title      TEXT NOT NULL,
-    url        TEXT NOT NULL,
-    icon       TEXT NOT NULL DEFAULT '🔗',
-    sort_order INTEGER DEFAULT 0
-  );
-  CREATE TABLE IF NOT EXISTS todos (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    text       TEXT NOT NULL,
-    done       INTEGER NOT NULL DEFAULT 0,
-    sort_order INTEGER DEFAULT 0,
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS notes (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id    INTEGER NOT NULL UNIQUE REFERENCES users(id) ON DELETE CASCADE,
-    content    TEXT NOT NULL DEFAULT '',
-    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-
-  -- Tool: 3D-Kalkulator
-  CREATE TABLE IF NOT EXISTS calendar_feeds (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    name       TEXT NOT NULL,
-    url        TEXT NOT NULL,
-    color      TEXT NOT NULL DEFAULT '#4ecdc4',
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS folders (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    name       TEXT NOT NULL,
-    parent_id  INTEGER REFERENCES folders(id) ON DELETE CASCADE,
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS folder_shares (
-    id           INTEGER PRIMARY KEY AUTOINCREMENT,
-    folder_id    INTEGER NOT NULL REFERENCES folders(id) ON DELETE CASCADE,
-    shared_by    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    shared_with  INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    created_at   DATETIME DEFAULT CURRENT_TIMESTAMP,
-    UNIQUE(folder_id, shared_with)
-  );
-
-  CREATE TABLE IF NOT EXISTS files (
-    id           INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id      INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    filename     TEXT NOT NULL,
-    originalname TEXT NOT NULL,
-    mimetype     TEXT NOT NULL DEFAULT 'application/octet-stream',
-    size         INTEGER NOT NULL,
-    created_at   DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS file_shares (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    file_id    INTEGER NOT NULL REFERENCES files(id) ON DELETE CASCADE,
-    shared_by  INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    shared_with INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
-    UNIQUE(file_id, shared_with)
-  );
-  CREATE TABLE IF NOT EXISTS user_keys (
-    user_id    INTEGER PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
-    public_key TEXT NOT NULL,
-    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS push_subscriptions (
-    id         INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    endpoint   TEXT NOT NULL UNIQUE,
-    p256dh     TEXT NOT NULL,
-    auth       TEXT NOT NULL,
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS messages (
-    id                   INTEGER PRIMARY KEY AUTOINCREMENT,
-    sender_id            INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    recipient_id         INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    encrypted_content    TEXT NOT NULL,
-    iv                   TEXT NOT NULL,
-    created_at           DATETIME DEFAULT CURRENT_TIMESTAMP,
-    deleted_by_sender    INTEGER NOT NULL DEFAULT 0,
-    deleted_by_recipient INTEGER NOT NULL DEFAULT 0
-  );
-
-  CREATE TABLE IF NOT EXISTS admin_settings (
-    key   TEXT PRIMARY KEY,
-    value TEXT NOT NULL
-  );
-
-  CREATE TABLE IF NOT EXISTS orders (
-    id           INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id      INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    name         TEXT NOT NULL,
-    bemerkung    TEXT NOT NULL DEFAULT '',
-    status       TEXT NOT NULL DEFAULT 'warteliste',
-    custom_price REAL,
-    created_at   DATETIME DEFAULT CURRENT_TIMESTAMP,
-    updated_at   DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-  CREATE TABLE IF NOT EXISTS order_items (
-    id                 INTEGER PRIMARY KEY AUTOINCREMENT,
-    order_id           INTEGER NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
-    calculation_id     INTEGER REFERENCES calculations(id) ON DELETE SET NULL,
-    calc_name          TEXT NOT NULL,
-    preis_freundschaft REAL NOT NULL,
-    preis_normal       REAL NOT NULL,
-    preis_auftrag      REAL NOT NULL,
-    stueckzahl         INTEGER NOT NULL DEFAULT 1
-  );
-
-  CREATE TABLE IF NOT EXISTS calculations (
-    id                      INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id                 INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    name                    TEXT NOT NULL,
-    gramm                   REAL NOT NULL,
-    stunden                 REAL NOT NULL,
-    farben                  INTEGER NOT NULL DEFAULT 1,
-    materialpreis_pro_gramm REAL NOT NULL DEFAULT 0.01,
-    stromverbrauch_kw       REAL NOT NULL DEFAULT 0.15,
-    strompreis_pro_kwh      REAL NOT NULL DEFAULT 0.38,
-    druckerpreis            REAL NOT NULL DEFAULT 550,
-    gesamtdruckstunden      REAL NOT NULL DEFAULT 5000,
-    verschleiss_pro_stunde  REAL NOT NULL DEFAULT 0.06,
-    preis_freundschaft      REAL NOT NULL,
-    preis_normal            REAL NOT NULL,
-    preis_auftrag           REAL NOT NULL,
-    created_at              DATETIME DEFAULT CURRENT_TIMESTAMP,
-    updated_at              DATETIME DEFAULT CURRENT_TIMESTAMP
-  );
-`);
-
-// Standard-Admin beim ersten Start anlegen
-// Default admin settings
-const settingDefaults = [
-  ['file_max_size_mb', '50'],
-  ['file_max_count',   '20'],
-  ['file_allowed_ext', '.pdf,.jpg,.jpeg,.png,.gif,.zip,.txt,.docx,.xlsx,.mp4,.stl,.3mf'],
-];
-for (const [key, value] of settingDefaults) {
-  if (!db.prepare('SELECT key FROM admin_settings WHERE key=?').get(key))
-    db.prepare('INSERT INTO admin_settings (key,value) VALUES (?,?)').run(key, value);
-}
-
-if (db.prepare('SELECT COUNT(*) c FROM users').get().c === 0) {
-  db.prepare('INSERT INTO users (username, password_hash, role) VALUES (?, ?, ?)')
-    .run('admin', bcrypt.hashSync('admin123', 12), 'admin');
-  console.log('✅ Erster Start: Admin angelegt: admin / admin123  →  Bitte Passwort sofort ändern!');
-}
-
-// ── Migrationen (werden bei jedem Start geprüft) ─────────────────────────────
-const cols = db.prepare("PRAGMA table_info(calculations)").all().map(r => r.name);
-if (!cols.includes('image'))     db.exec("ALTER TABLE calculations ADD COLUMN image TEXT");
-if (!cols.includes('bemerkung')) db.exec("ALTER TABLE calculations ADD COLUMN bemerkung TEXT NOT NULL DEFAULT ''");
-
-// Migrationen orders
-const ordCols = db.prepare("PRAGMA table_info(orders)").all().map(r => r.name);
-if (!ordCols.includes('bezahlt'))    db.exec("ALTER TABLE orders ADD COLUMN bezahlt INTEGER NOT NULL DEFAULT 0");
-if (!ordCols.includes('bezahlt_am')) db.exec("ALTER TABLE orders ADD COLUMN bezahlt_am DATETIME");
-
-// Migrationen order_items
-// files migrations
-const fileCols = db.prepare("PRAGMA table_info(files)").all().map(r => r.name);
-if (!fileCols.includes('folder_id')) db.exec("ALTER TABLE files ADD COLUMN folder_id INTEGER REFERENCES folders(id) ON DELETE SET NULL");
-
-// folder_shares migrations (only if table exists)
-const fsTableExists = db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='folder_shares'").get();
-if (fsTableExists) {
-  const fsCols = db.prepare("PRAGMA table_info(folder_shares)").all().map(r => r.name);
-  if (!fsCols.includes('created_at')) db.exec("ALTER TABLE folder_shares ADD COLUMN created_at DATETIME DEFAULT NULL");
-}
-
-const oiCols = db.prepare("PRAGMA table_info(order_items)").all().map(r => r.name);
-if (!oiCols.includes('stunden')) db.exec("ALTER TABLE order_items ADD COLUMN stunden REAL NOT NULL DEFAULT 0");
-if (!oiCols.includes('custom_price'))    db.exec("ALTER TABLE order_items ADD COLUMN custom_price REAL");
-if (!oiCols.includes('status'))          db.exec("ALTER TABLE order_items ADD COLUMN status TEXT NOT NULL DEFAULT 'warteliste'");
-if (!oiCols.includes('qty_warteliste'))  db.exec("ALTER TABLE order_items ADD COLUMN qty_warteliste INTEGER NOT NULL DEFAULT 0");
-if (!oiCols.includes('qty_in_arbeit'))   db.exec("ALTER TABLE order_items ADD COLUMN qty_in_arbeit INTEGER NOT NULL DEFAULT 0");
-if (!oiCols.includes('qty_fertig'))      db.exec("ALTER TABLE order_items ADD COLUMN qty_fertig INTEGER NOT NULL DEFAULT 0");
-// Bestehende Einträge: alle Stücke auf Warteliste setzen falls noch keine Qtys gesetzt
-db.exec("UPDATE order_items SET qty_warteliste=stueckzahl WHERE qty_warteliste=0 AND qty_in_arbeit=0 AND qty_fertig=0");
-module.exports = db;