chore: update all packages to latest versions

- aionui 2.1.4 -> 2.1.50
- desloppify 0.9.15 -> 1.0
- ds4 -> 2026-08-05 (b030961)
- freebuff 0.0.85 -> 0.0.142 (binary moved to GitHub releases)
- graphify 0.7.10 -> 0.9.35 (license Apache-2.0, fix sed patterns for versioned deps)
- hipengine 0.2.2 -> 0.3.0 (console script renamed to hipengine)
- kubernetes-mcp-server 0.0.62 -> 0.0.66 (requires go >= 1.26.3)
- mcp-gateway 2.11.0 -> 3.4.0 (requires rustc >= 1.95)
- omniroute 3.8.28 -> 3.8.49
- radar 1.6.1 -> 1.9.1 (drop obsolete lockfile sed patch)
- relay-free-llm -> 96e6c48, cerebras-cloud-sdk 1.67.0 -> 1.91.0
- stakpak 0.3.86 -> 0.3.88

Add nixpkgs-latest input for toolchains newer than the pinned nixpkgs.

packages/ds4/package.nix

@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation {
   pname = "ds4";
-  version = "0-unstable-2026-06-17";
+  version = "0-unstable-2026-08-05";
 
   src = fetchFromGitHub {
     owner = "antirez";
     repo = "ds4";
-    rev = "80ebbc396aee40eedc1d829222f3362d10fa4c6c";
-    hash = "sha256-Ieuc72GHZs20ModQfnvI5Me31n4Pj+WFYtsuqaKJceo=";
+    rev = "b0309611041655f4e45671cfd9c9886aff161406";
+    hash = "sha256-yBPQqX8oI9fElGiXfz72iWwIS8ZQpK4Bl9TWLZSa6JU=";
   };
 
   nativeBuildInputs = [