ddm: 4.0.0 -> 4.1.0

[OPNA2608]

https://mikaygo.itch.io/ddm/devlog/924616/410

• Unsure if this is issue-free, since the devlog notes that the game may now download smaller updates automatically, and I haven't been able to test if/how that works

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 25.05 Release Notes (or backporting 24.11 and 25.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

---

Add a 👍 reaction to pull requests you find important.

[OPNA2608]

Builds, but currently doesn't work properly: New version introduced some path sanity checking, which fails on our patch to change the images cache path to $HOME/.cache/ddm. Will need an update on the patch.

[OPNA2608]

Patch updated. Still unsure about the supposed update mechanism, but we'll get there when it hits us ig.