Fix: DB-Pfad auf /app/data/fitness.db korrigiert

apps/api/Program.cs

@@ -2,8 +2,10 @@ using Microsoft.EntityFrameworkCore;
 
 var builder = WebApplication.CreateBuilder(args);
 
+// Datenbank-Pfad: /app/data im Container (Volume) - überlebt Container-Neustarts!
+var dbPath = Path.Combine("/app/data", "fitness.db");
 builder.Services.AddDbContext<AppDbContext>(options =>
-    options.UseSqlite("Data Source=fitness.db"));
+    options.UseSqlite($"Data Source={dbPath}"));
 
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddOpenApiDocument();
@@ -11,6 +13,13 @@ builder.Services.AddSwaggerGen();
 
 var app = builder.Build();
 
+// Datenbank automatisch erstellen, falls sie nicht existiert
+using (var scope = app.Services.CreateScope())
+{
+    var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+    db.Database.EnsureCreated();
+}
+
 if (app.Environment.IsDevelopment())
 {
     app.UseOpenApi();
@@ -73,3 +82,4 @@ public class AppDbContext : DbContext
     public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
     public DbSet<Workout> Workouts => Set<Workout>();
 }
+