Add agent CLI wrappers to T3 Code packages

- Wire llm-agents into the flake
- Expose optional codex, Claude Code, and OpenCode paths in desktop and server wrappers

flake.nix

@@ -3,12 +3,17 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+    llm-agents = {
+      url = "github:numtide/llm-agents.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     t3code.url = "github:pingdotgg/t3code";
     t3code.flake = false;
   };
 
   outputs = {
     self,
+    llm-agents,
     nixpkgs,
     t3code,
     ...
@@ -25,8 +30,18 @@
     packages = forAllSystems (
       system: let
         pkgs = import nixpkgs {inherit system;};
-        t3code-desktop = pkgs.callPackage ./packages/t3code-desktop {src = t3code;};
-        t3code-server = pkgs.callPackage ./packages/t3code-server {src = t3code;};
+        t3code-desktop = pkgs.callPackage ./packages/t3code-desktop {
+          src = t3code;
+          codex = llm-agents.packages.${system}.codex;
+          claudeCode = llm-agents.packages.${system}."claude-code";
+          opencode = llm-agents.packages.${system}.opencode;
+        };
+        t3code-server = pkgs.callPackage ./packages/t3code-server {
+          src = t3code;
+          codex = llm-agents.packages.${system}.codex;
+          claudeCode = llm-agents.packages.${system}."claude-code";
+          opencode = llm-agents.packages.${system}.opencode;
+        };
       in {
         inherit t3code-desktop t3code-server;
         desktop = t3code-desktop;