feat: make codex config no longer managed by nix

modules/capabilities/ai.nix

@@ -2,23 +2,6 @@
 let
   account = config.repo.account;
   hmModules = config.flake.modules.homeManager;
-
-  sharedContext = ''
-    # Global Agent Context
-
-    Be a concise technical thought partner. Check the premise before executing, optimize for the user's actual outcome, and make important assumptions or tradeoffs visible.
-
-    ## Machine Environment
-
-    - This machine is Nix/NixOS-based. Standard Linux assumptions may be wrong: software is usually provided by flakes, dev shells, `devenv`, `direnv`, or the user's NixOS/Home Manager config rather than `apt`, `dnf`, or global installs.
-    - If a repo has `flake.nix`, `devenv.nix`, `shell.nix`, or `.envrc`, prefer entering or invoking its dev environment (`nix develop`, `devenv shell`, or `direnv exec . <cmd>`). `direnv` may not be loaded automatically inside agent shells.
-    - For NixOS/Home Manager/nixpkgs/packages/options, use the NixOS MCP when available instead of relying on memory.
-
-    ## User Preferences
-
-    - The user values precision, minimalism, and conceptual clarity. Challenge weak premises, but explain why.
-    - For larger or ambiguous work, interview or plan before broad implementation. For small concrete requests, proceed with the obvious scoped change.
-  '';
 in
 {
   flake.modules.nixos.ai = {
@@ -42,8 +25,6 @@ in
       ...
     }:
     {
-      home.sessionVariables.GEMINI_CONFIG_DIR = "${config.xdg.configHome}/gemini";
-
       programs.mcp = {
         enable = true;
         servers.nixos = {
@@ -52,49 +33,35 @@ in
         };
       };
 
-      programs.gemini-cli = {
-        enable = false;
-        package = pkgs.llm-agents.gemini-cli;
-        enableMcpIntegration = true;
-        context.AGENTS = sharedContext;
-        settings = {
-          context = {
-            fileName = [
-              "AGENTS.md"
-              "GEMINI.md"
+      home.packages = [
+        pkgs.llm-agents.codex
       ];
-            loadMemoryFromIncludeDirectories = true;
-          };
-          model.name = "gemini-3.1-pro-preview";
-        };
-      };
 
-      programs.codex = {
-        enable = true;
-        package = pkgs.llm-agents.codex;
-        enableMcpIntegration = true;
-        context = sharedContext;
-        settings = {
-          model = "gpt-5.5";
-          model_reasoning_effort = "high";
-          plan_mode_reasoning_effort = "high";
-          tui.status_line = [
-            "model-with-reasoning"
-            "current-dir"
-            "git-branch"
-            "context-remaining"
-            "five-hour-limit"
-          ];
-          projects.${account.nixosConfigurationPath}.trust_level = "trusted";
-          projects."${config.home.homeDirectory}/work/repos/yookr_data_science".trust_level = "trusted";
-          sandbox_mode = "workspace-write";
-          personality = "pragmatic";
-          features.undo = true;
-          mcp_servers.nixos = config.programs.mcp.servers.nixos // {
-            enabled = true;
-            default_tools_approval_mode = "approve";
-          };
-        };
-      };
+      # programs.codex = {
+      #   enable = true;
+      #   package = pkgs.llm-agents.codex;
+      #   enableMcpIntegration = true;
+      #   settings = {
+      #     model = "gpt-5.5";
+      #     model_reasoning_effort = "high";
+      #     plan_mode_reasoning_effort = "high";
+      #     tui.status_line = [
+      #       "model-with-reasoning"
+      #       "current-dir"
+      #       "git-branch"
+      #       "context-remaining"
+      #       "five-hour-limit"
+      #     ];
+      #     projects.${account.nixosConfigurationPath}.trust_level = "trusted";
+      #     projects."${config.home.homeDirectory}/work/repos/yookr-data-science".trust_level = "trusted";
+      #     sandbox_mode = "workspace-write";
+      #     personality = "pragmatic";
+      #     features.undo = true;
+      #     mcp_servers.nixos = config.programs.mcp.servers.nixos // {
+      #       enabled = true;
+      #       default_tools_approval_mode = "approve";
+      #     };
+      #   };
+      # };
     };
 }