Various fixes for DB seeding

database/migrations/2025_11_25_153801_create_units_table.php

@@ -15,14 +15,6 @@ public function up(): void
             $table->string('symbol', 10)->nullable();
             $table->timestamps();
         });
-
-        // Füge Standard-Einheiten hinzu
-        DB::table('units')->insert([
-            ['name' => 'Stück', 'symbol' => 'Stk'],
-            ['name' => 'Stunden', 'symbol' => 'h'],
-            ['name' => 'Tage', 'symbol' => 'd'],
-            ['name' => 'pauschal', 'symbol' => 'p'],
-        ]);
     }
 
     public function down(): void