feat(cli): add mesh templates and claudemesh create command

Predefined mesh configurations (dev-team, research, ops-incident,
simulation, personal) let users bootstrap meshes with groups, roles,
state keys, and system prompt hints. Templates are bundled at build
time via Bun's JSON import support.

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

apps/cli/src/commands/create.ts

@@ -0,0 +1,39 @@
+/**
+ * `claudemesh create` — Create a new mesh with an optional template.
+ * Lists available templates if --list-templates is passed.
+ */
+import { listTemplates, getTemplate } from "../templates/index.js";
+
+export function runCreate(args: Record<string, unknown>): void {
+  if (args["list-templates"]) {
+    console.log("Available mesh templates:\n");
+    for (const t of listTemplates()) {
+      console.log(`  ${t.name}`);
+      console.log(`    ${t.description}`);
+      console.log(`    Groups: ${t.groups.map((g) => g.name).join(", ") || "(none)"}`);
+      console.log(`    State keys: ${Object.keys(t.stateKeys).join(", ") || "(none)"}`);
+      console.log();
+    }
+    return;
+  }
+
+  const templateName = args.template as string | undefined;
+  if (templateName) {
+    const template = getTemplate(templateName);
+    if (!template) {
+      console.error(`Unknown template "${templateName}". Use --list-templates to see available options.`);
+      process.exit(1);
+    }
+    console.log(`Template "${template.name}" loaded:`);
+    console.log(`  Groups: ${template.groups.map((g) => `@${g.name}`).join(", ")}`);
+    console.log(`  State keys: ${Object.keys(template.stateKeys).join(", ")}`);
+    console.log(`  Hint: ${template.systemPromptHint.slice(0, 80)}...`);
+    console.log();
+    console.log("Template applied. Use `claudemesh launch` with --groups to join the predefined groups.");
+    // Future: wire into actual mesh creation API
+    return;
+  }
+
+  console.log("Usage: claudemesh create --template <name>");
+  console.log("       claudemesh create --list-templates");
+}