feat(designer): ship designer as a workspace agent package

Extract src/agent/directors/designer/package.ts into the
@corbits/agent-designer workspace package with a byte-identical
system prompt and a self-contained tool allowlist. The registry
imports the workspace copy; drift against the app build surface
fails src/agent/directors/designer/package.test.ts.

Fixes CL-9798.

Author: TheGreatAxios

agents/designer/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "@corbits/agent-designer",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "license": "SEE LICENSE IN LICENSE.md",
+  "exports": {
+    ".": {
+      "types": "./src/index.ts",
+      "default": "./src/index.ts"
+    }
+  }
+}

src/agent/directors/designer/package.ts agents/designer/src/index.tssrc/agent/directors/designer/package.ts renamed to agents/designer/src/index.ts

@@ -1,12 +1,49 @@
-import type { DirectorPackage } from "../types.js";
-import { BUILD_TOOLS } from "../tool-sets.js";
-
 /**
  * Designer worker: UI/UX design engineering specialist.
  * Owns DESIGN.md creation and updates, impeccable.style design laws,
  * design tokens, typography, spatial layout, and micro-interaction polish.
+ *
+ * Ships as the @corbits/agent-designer workspace package: the tool allowlist
+ * lives here so the package stays importable without the app. Drift against
+ * the app build surface fails src/agent/directors/designer/package.test.ts.
  */
-export const designerPackage: DirectorPackage = {
+export type AgentPackage = {
+  readonly id: "designer";
+  readonly primaryIntent: string;
+  readonly outOfLane: readonly string[];
+  readonly description: string;
+  readonly systemPrompt: string;
+  /** Unset — designer never attaches skill bodies at spawn. */
+  readonly attachedSkills?: readonly string[];
+  /** Unset — designer declares no skill scope. */
+  readonly optionalSkills?: readonly string[];
+  readonly tools: {
+    readonly allow: readonly string[];
+  };
+  readonly spawn: {
+    readonly maySpawn: false;
+  };
+  readonly modelRole: "implement";
+  readonly tier: "leaf";
+};
+
+const DESIGNER_TOOLS = [
+  "read_file",
+  "grep",
+  "search_files",
+  "list_dir",
+  "lsp",
+  "run_shell",
+  "web_fetch",
+  "web_search",
+  "skill_search",
+  "use_skill",
+  "write_file",
+  "edit_file",
+  "delete_file",
+] as const;
+
+export const designerPackage: AgentPackage = {
   id: "designer",
   primaryIntent:
     "Own DESIGN.md create/use, design tokens, UI styling, and impeccable.style design engineering",
@@ -18,10 +55,6 @@ export const designerPackage: DirectorPackage = {
   ],
   description:
     "UI/UX designer — owns DESIGN.md, impeccable style design laws, tokens, and interface polish",
-  tools: { allow: BUILD_TOOLS },
-  spawn: { maySpawn: false },
-  tier: "leaf",
-  modelRole: "implement",
   systemPrompt: `You are DesignerDirector (Designer), a specialist in Corbits Code.
 
 PRIMARY INTENT: own interface design, design tokens, styling, and DESIGN.md. You bring design engineering excellence to UI surfaces — layout rhythm, typography, purposeful motion, responsive states, and cohesive design systems.
@@ -45,4 +78,8 @@ Workflow:
 4. Report changes with Summary / Findings / Blockers / Paths.
 
 OUT OF LANE: backend business logic or database migrations, general backend defect review, marketing content pipelines, fleet orchestration.`,
+  tools: { allow: [...DESIGNER_TOOLS] },
+  spawn: { maySpawn: false },
+  tier: "leaf",
+  modelRole: "implement",
 };

bun.lock

@@ -86,6 +86,7 @@
     "tar": "^7.5.1"
   },
   "dependencies": {
+    "@corbits/agent-designer": "workspace:*",
     "@corbits/codex-provider": "0.1.1",
     "@corbits/oauth-core": "0.2.0",
     "@corbits/openai-responses": "0.2.1",

package.json

@@ -0,0 +1,26 @@
+import { describe, expect, test } from "bun:test";
+
+import { designerPackage } from "@corbits/agent-designer";
+import { BUILD_TOOLS } from "../tool-sets.js";
+import { DIRECTOR_REGISTRY } from "../registry.js";
+import type { DirectorPackage } from "../types.js";
+
+describe("designerPackage", () => {
+  test("workspace package satisfies the director contract and feeds the registry", () => {
+    const asDirector: DirectorPackage = designerPackage;
+    expect(asDirector.id).toBe("designer");
+    expect(DIRECTOR_REGISTRY.designer).toBe(designerPackage);
+    expect([...designerPackage.tools.allow]).toEqual([...BUILD_TOOLS]);
+  });
+
+  test("extracted copy stays build-scoped and non-spawning", () => {
+    expect(designerPackage.tools.allow).toContain("write_file");
+    expect(designerPackage.tools.allow).toContain("edit_file");
+    expect(designerPackage.tools.allow).toContain("delete_file");
+    expect(designerPackage.tools.allow).not.toContain("spawn_agent");
+    expect(designerPackage.tools.allow).not.toContain("ask_operator");
+    expect(designerPackage.spawn.maySpawn).toBe(false);
+    expect(designerPackage.tier).toBe("leaf");
+    expect(designerPackage.modelRole).toBe("implement");
+  });
+});

src/agent/directors/designer/package.test.ts

@@ -1,7 +1,7 @@
+import { designerPackage } from "@corbits/agent-designer";
 import type { AgentProfile, CapabilityFilter } from "../profile-types.js";
 import { artistPackage } from "./artist/package.js";
 import { coderPackage } from "./coder/package.js";
-import { designerPackage } from "./designer/package.js";
 import { dispatchPackage } from "./dispatch/package.js";
 import { explorerPackage } from "./explorer/package.js";
 import { plannerPackage } from "./planner/package.js";

src/agent/directors/registry.ts

@@ -5,6 +5,7 @@
     "composite": false,
     "baseUrl": ".",
     "paths": {
+      "@corbits/agent-designer": ["./agents/designer/src/index.ts"],
       "@corbits/provider-opencode-go": ["./packages/opencode-go/src/index.ts"],
       "@corbits/first-class-providers": [
         "./packages/first-class-providers/src/index.ts"
@@ -17,6 +18,7 @@
     "src/**/*.ts",
     "testkit/**/*.ts",
     "packages/**/*.ts",
+    "agents/**/*.ts",
     "e2e/**/*.ts",
     "evals/**/*.ts",
     "scripts/**/*.ts"