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/freebuff/package.nix

@@ -9,11 +9,11 @@
 }:
 
 let
-  version = "0.0.85";
+  version = "0.0.142";
 
   freebuffSrc = fetchurl {
     url = "https://registry.npmjs.org/freebuff/-/freebuff-${version}.tgz";
-    hash = "sha256-1x593yLMkoFIO5O+k5NKeEpi729VhINQlW1xFbYGnXM=";
+    hash = "sha256-8DSNy/wJqLzp7mu2xsPBlMv69aBMIBNVva3SAaV13Tw=";
   };
 
   pkgTar = fetchurl {
@@ -47,15 +47,15 @@ let
   };
 
   binarySrc = fetchurl {
-    url = "https://codebuff.com/api/releases/download/${version}/freebuff-linux-x64.tar.gz";
-    hash = "sha256-WRTEXqKDww4ZPAnDLAAkAd0jxl+z6+dRbcQORmN7QfM=";
+    url = "https://github.com/CodebuffAI/codebuff-community/releases/download/freebuff-v${version}/freebuff-linux-x64.tar.gz";
+    hash = "sha256-SuV5djfrvRZZ59p+dUyiux+OmEMOxscuIU5/YDGWHYI=";
   };
 
 in
 
 stdenv.mkDerivation rec {
   pname = "freebuff";
-  version = "0.0.85";
+  version = "0.0.142";
 
   src = freebuffSrc;