Convert Openclaw to Podman container

- Use official ghcr.io/openclaw/openclaw image
- configure via JSON config file
- containerized for better isolation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/openclaw-podman.nix

@@ -0,0 +1,58 @@
+# OpenClaw Podman Module
+# Provides: AI Agent with Discord integration running in a container
+#
+# Usage:
+#   myModules.openclaw-podman = {
+#     enable = true;
+#     port = 18789;
+#     domain = "openclaw.example.com";
+#   };
+
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.myModules.openclaw-podman;
+in
+{
+  options.myModules.openclaw-podman = {
+    enable = lib.mkEnableOption "OpenClaw AI Agent (Podman)";
+
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 18789;
+      description = "Gateway port for OpenClaw";
+    };
+
+    domain = lib.mkOption {
+      type = lib.types.str;
+      example = "openclaw.example.com";
+      description = "Public domain for OpenClaw";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    # Enable podman
+    myModules.podman.enable = true;
+
+    # OpenClaw container
+    virtualisation.oci-containers.containers."openclaw" = {
+      image = "ghcr.io/openclaw/openclaw:latest";
+      ports = [ "127.0.0.1:${toString cfg.port}:8080" ];
+      environmentFiles = [
+        config.sops.templates."openclaw.env".path
+      ];
+      volumes = [
+        "${config.sops.templates."openclaw_config.json".path}:/root/.openclaw/config.json:ro"
+        "openclaw-data:/root/.openclaw"
+      ];
+      extraOptions = [
+        "--network=host"
+      ];
+    };
+  };
+}