fix(runner): provision pinned Pi in published server installs

Add explicit host-only setup, verify the public server vendor layout, and route readiness through the packaged runner boundary. Preserve exact Pi closure and normal-mode admission checks.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

cli/src/__tests__/runtime.test.ts

@@ -0,0 +1,32 @@
+import { mkdtemp, mkdir, rm, symlink, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { pathToFileURL } from "node:url";
+import { Command } from "commander";
+import { afterEach, expect, it } from "vitest";
+import { registerRuntimeCommands, resolvePiProvisioner } from "../commands/runtime.js";
+const roots: string[] = [];
+afterEach(async () => { await Promise.all(roots.splice(0).map(root => rm(root, { recursive: true, force: true }))); });
+async function fixture() {
+  const root = await mkdtemp(join(tmpdir(), "paperclip-cli-runtime-")); roots.push(root);
+  const cli = join(root, "dist/vendor/paperclip-runner/cli"); await mkdir(cli, { recursive: true });
+  await writeFile(join(root, "package.json"), '{"name":"@paperclipai/server"}');
+  await writeFile(join(root, "dist/index.js"), "throw new Error('server must not start during setup resolution')");
+  await writeFile(join(cli, "provision-pi.cjs"), "fixture");
+  return { root, cli, url: pathToFileURL(join(root, "dist/index.js")).href };
+}
+it("locates the public server's setup entrypoint without importing its API server", async () => {
+  const f = await fixture(); expect(await resolvePiProvisioner(f.url)).toBe(join(f.cli, "provision-pi.cjs"));
+});
+it("rejects foreign package identity and a setup entrypoint outside that package", async () => {
+  const f = await fixture(); const other = await fixture();
+  await writeFile(join(f.root, "package.json"), '{"name":"foreign"}');
+  await expect(resolvePiProvisioner(f.url)).rejects.toThrow("identity");
+  await writeFile(join(f.root, "package.json"), '{"name":"@paperclipai/server"}');
+  await rm(join(f.cli, "provision-pi.cjs")); await symlink(join(other.cli, "provision-pi.cjs"), join(f.cli, "provision-pi.cjs"));
+  await expect(resolvePiProvisioner(f.url)).rejects.toThrow("escapes");
+});
+it("provides an explicit Pi-only operator command and rejects other providers before resolution", async () => {
+  const program = new Command(); registerRuntimeCommands(program);
+  await expect(program.parseAsync(["node", "paperclipai", "runtime", "setup", "untrusted"])).rejects.toThrow("Supported explicit runtime setup");
+});