feat: claudemesh slug <old> <new> — change a mesh's slug (v1.20.0)

Slugs are not globally unique (mesh.id is canonical) so the route
only validates the regex and updates the row. CLI refuses a local
collision (two joined meshes sharing a slug would make the picker
ambiguous) and rewrites ~/.claudemesh/config.json on success.
Other peers pick up the new slug on next claudemesh sync.

Server: PATCH /api/cli/meshes/:slug body now accepts { name?, slug? }
— same route, just optional both fields.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/cli/src/services/api/my.ts

@@ -31,6 +31,15 @@ export async function renameMesh(token: string, slug: string, newName: string) {
   });
 }
 
+export async function reslugMesh(token: string, oldSlug: string, newSlug: string) {
+  return request<{ slug: string; name: string }>({
+    path: `/api/cli/meshes/${oldSlug}`,
+    method: "PATCH",
+    body: { slug: newSlug },
+    token,
+  });
+}
+
 export async function createInvite(
   token: string,
   meshSlug: string,

apps/cli/src/services/mesh/facade.ts

@@ -1,6 +1,7 @@
 export { listMeshes as list } from "./list.js";
 export { createMesh as create } from "./create.js";
 export { renameMesh as rename } from "./rename.js";
+export { reslugMesh as reslug } from "./reslug.js";
 export { leaveMesh as leave } from "./leave.js";
 export { joinMesh as join, joinMesh } from "./join.js";
 export { resolveTarget } from "./resolve-target.js";

apps/cli/src/services/mesh/reslug.ts

@@ -0,0 +1,8 @@
+import { my } from "~/services/api/facade.js";
+import { getStoredToken } from "~/services/auth/facade.js";
+
+export async function reslugMesh(oldSlug: string, newSlug: string): Promise<{ slug: string; name: string }> {
+  const auth = getStoredToken();
+  if (!auth) throw new Error("Not signed in");
+  return await my.reslugMesh(auth.session_token, oldSlug, newSlug);
+}