feat: new setup for work laptop

home-modules/opencode.nix

@@ -0,0 +1,51 @@
+{ homeLib, ... }:
+
+{
+  home.file.".agents/skills/check-pr".source = "${homeLib.greptileSkills}/check-pr";
+  home.file.".agents/skills/greploop".source = "${homeLib.greptileSkills}/greploop";
+
+  home.file.".config/opencode/opencode.json".text = builtins.toJSON {
+    "$schema" = "https://opencode.ai/config.json";
+    autoupdate = false;
+    plugin = [ "opencode-with-claude" ];
+    permission = {
+      "*" = "allow";
+      external_directory = "allow";
+      doom_loop = "allow";
+    };
+    mcp.linear = {
+      type = "remote";
+      url = "https://mcp.linear.app/mcp";
+      enabled = true;
+    };
+    model = "openai/gpt-5.4-fast";
+    small_model = "openai/gpt-5.4-mini-fast";
+    provider.openai.models."gpt-5.4-fast".options = {
+      reasoningEffort = "xhigh";
+    };
+    share = "disabled";
+  };
+
+  home.file.".config/opencode/AGENTS.md".text = ''
+    # NixOS Rules
+
+    - This machine is NixOS. Prefer the Nix way for installing and running tools.
+    - Do not suggest `apt`, `dnf`, `pacman`, `brew`, `npm -g`, `pip install`, `cargo install`, `curl | sh`, or manual installers unless explicitly asked.
+    - If a repo has `flake.nix`, treat it as the source of truth for project tooling.
+    - If a needed tool belongs to the project, add it to `flake.nix` or the dev shell instead of installing it another way.
+    - If a repo has `flake.nix`, ensure `.envrc` contains `use flake` unless the repo intentionally uses a different setup.
+    - If there is no `flake.nix` and the tool is only needed temporarily, prefer `nix shell nixpkgs#<pkg> -c <command>`.
+    - For persistent tools, prefer declarative Nix configuration.
+    - Prefer `direnv` or `nix develop` before deciding a tool is missing.
+    - Never run `nixos-rebuild`, `nh os switch`, `nhs`, or other system switch commands unless explicitly asked.
+  '';
+
+  home.file.".config/opencode/tui.json".text = builtins.toJSON {
+    "$schema" = "https://opencode.ai/tui.json";
+    keybinds = {
+      leader = "ctrl+x";
+      command_list = "<leader>p";
+      variant_cycle = "<leader>t";
+    };
+  };
+}