feat(FN-3907): add fusion-plugin-cli-printing-press plugin scaffold

Restores and stabilizes a new `fusion-plugin-cli-printing-press` plugin scaffold, including the plugin manifest, TypeScript configuration, source entry point, and test suite, with vitest aliases added in a follow-up fix.

Fusion-Task-Id: FN-3907

plugins/fusion-plugin-cli-printing-press/README.md

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+# fusion-plugin-cli-printing-press
+
+Bundled first-party Fusion plugin integrating [cli-printing-press](https://github.com/mvanhorn/cli-printing-press) for generating and managing CLIs for external services.
+
+## Status
+
+v1 design: see `docs/design/cli-printing-press-plugin.md`.
+
+Implementation forthcoming in FN-3763 through FN-3770. This directory currently contains a no-op plugin stub that registers with the Fusion plugin system and passes manifest validation.

plugins/fusion-plugin-cli-printing-press/manifest.json

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+{
+  "id": "fusion-plugin-cli-printing-press",
+  "name": "CLI Printing Press",
+  "version": "0.1.0",
+  "description": "Generate and manage CLIs for external services using cli-printing-press"
+}

plugins/fusion-plugin-cli-printing-press/package.json

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+{
+  "name": "@fusion-plugin-examples/cli-printing-press",
+  "version": "0.1.0",
+  "type": "module",
+  "description": "CLI Printing Press plugin package for Fusion",
+  "private": true,
+  "exports": {
+    ".": {
+      "types": "./src/index.ts",
+      "import": "./src/index.ts"
+    }
+  },
+  "scripts": {
+    "build": "tsc",
+    "test": "vitest run --silent=passed-only --reporter=dot"
+  },
+  "dependencies": {
+    "@fusion/core": "workspace:*",
+    "@fusion/plugin-sdk": "workspace:*"
+  },
+  "devDependencies": {
+    "@types/node": "^25.5.2",
+    "typescript": "^5.7.0",
+    "vitest": "^3.2.4"
+  }
+}

plugins/fusion-plugin-cli-printing-press/src/__tests__/manifest.test.ts

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+import { describe, it, expect } from "vitest";
+import { validatePluginManifest } from "@fusion/core";
+import plugin from "../index.js";
+import manifestJson from "../../manifest.json" with { type: "json" };
+
+describe("cli-printing-press plugin stub (FN-3762)", () => {
+  it("registers with the correct manifest id", () => {
+    expect(plugin.manifest.id).toBe("fusion-plugin-cli-printing-press");
+  });
+
+  it("passes manifest validation", () => {
+    const validation = validatePluginManifest(manifestJson);
+    expect(validation.valid).toBe(true);
+  });
+
+  it("has no routes or dashboardViews in the stub", () => {
+    expect(plugin.routes).toBeUndefined();
+    expect(plugin.dashboardViews).toBeUndefined();
+  });
+});

plugins/fusion-plugin-cli-printing-press/src/index.ts

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+import { definePlugin } from "@fusion/plugin-sdk";
+
+const plugin = definePlugin({
+  manifest: {
+    id: "fusion-plugin-cli-printing-press",
+    name: "CLI Printing Press",
+    version: "0.1.0",
+    description: "Generate and manage CLIs for external services using cli-printing-press",
+  },
+  state: "installed",
+  hooks: {},
+});
+
+export default plugin;

plugins/fusion-plugin-cli-printing-press/tsconfig.json

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+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": ["src/**/*.ts", "src/**/*.tsx"],
+  "exclude": ["src/**/*.test.ts", "src/**/__tests__/**"]
+}

plugins/fusion-plugin-cli-printing-press/vitest.config.ts

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+import { defineConfig } from "vitest/config";
+import { fileURLToPath } from "node:url";
+import { computeMaxWorkers } from "../../packages/core/src/__test-utils__/vitest-workers";
+
+const maxWorkers = computeMaxWorkers();
+
+export default defineConfig({
+  resolve: {
+    alias: [
+      { find: "@fusion/core", replacement: fileURLToPath(new URL("../../packages/core/src/index.ts", import.meta.url)) },
+      {
+        find: "@fusion/plugin-sdk",
+        replacement: fileURLToPath(new URL("../../packages/plugin-sdk/src/index.ts", import.meta.url)),
+      },
+    ],
+  },
+  test: {
+    include: ["src/**/*.test.{ts,tsx}"],
+    environment: "node",
+    setupFiles: [fileURLToPath(new URL("../../packages/core/src/__test-utils__/vitest-setup.ts", import.meta.url))],
+    globalSetup: [fileURLToPath(new URL("../../packages/core/src/__test-utils__/vitest-teardown.ts", import.meta.url))],
+    pool: "threads",
+    maxWorkers,
+    poolOptions: { threads: { minThreads: 1, maxThreads: maxWorkers }, forks: { minForks: 1, maxForks: maxWorkers } },
+  },
+});