docs: simplify README to focus on machine list and update flake references

home/programs/aichat.nix

@@ -16,7 +16,8 @@
     enableNushellIntegration = false;
     settings = {
       save_session = true;
-      model = "openai:gpt-4o";
+      # model = "openai:gpt-4o";
+      model = "ryu:qwen3-coder-30b";
       rag_embedding_model = "ollama:RobinBially/nomic-embed-text-8k";
       clients = [
         {

home/programs/neovim.nix

@@ -1,6 +1,7 @@
 {
   pkgs,
   device,
+  stablePkgs,
   lib,
   ...
 }: {
@@ -15,6 +16,6 @@
           };
         };
       }
-      // (import ./../../neovim {inherit pkgs;});
+      // (import ./../../neovim {inherit pkgs stablePkgs;});
   };
 }

home/programs/ssh.nix

@@ -17,7 +17,12 @@
       };
       mirai = {
         user = "fs0c131y";
-        hostname = "sh.darksailor.dev";
+        hostname = "mirai.darksailor.dev";
+        forwardAgent = true;
+      };
+      tako = {
+        user = "servius";
+        hostname = "tako.darksailor.dev";
         forwardAgent = true;
       };
       ryu = {