make sure path exists

src/location/GeoLite2.zig

@@ -30,6 +30,11 @@ fn downloadDatabase(allocator: std.mem.Allocator, path: []const u8) !void {
 
     if (result.status != .ok) return error.DownloadFailed;
 
+    // Ensure directory exists
+    if (std.fs.path.dirname(path)) |dir| {
+        try std.fs.cwd().makePath(dir);
+    }
+
     const file = try std.fs.cwd().createFile(path, .{});
     defer file.close();
     try file.writeAll(response_buf[0..writer.end]);