fix: cursor agent workspace from config instead of type assertion

Address review feedback: remove unsafe `as unknown as` cast on
currentRole. CursorAgentConfig now takes workspace directly instead
of using ExtractFn to infer it from thread context.

Refs #180

packages/workflow-agent-cursor/__tests__/cursor-agent.test.ts

@@ -1,23 +1,12 @@
 import { describe, expect, test } from "bun:test";
-import type { ExtractFn } from "@uncaged/workflow-runtime";
-import type * as z from "zod/v4";
 import { createCursorAgent, validateCursorAgentConfig } from "../src/index.js";
 
-const testExtract: ExtractFn = async <T extends Record<string, unknown>>(
-  _schema: z.ZodType<T>,
-  _contentHash: string,
-): Promise<{ meta: T; contentPayload: string; refs: string[] }> => ({
-  meta: { workspace: "/tmp" } as unknown as T,
-  contentPayload: "",
-  refs: [],
-});
-
 describe("validateCursorAgentConfig", () => {
   test("accepts valid config", () => {
     const r = validateCursorAgentConfig({
       model: null,
       timeout: 0,
-      extract: testExtract,
+      workspace: "/tmp/test-project",
     });
     expect(r.ok).toBe(true);
   });
@@ -26,11 +15,11 @@ describe("validateCursorAgentConfig", () => {
     const r = validateCursorAgentConfig({
       model: null,
       timeout: 0,
-      extract: null as unknown as ExtractFn,
+      workspace: "",
     });
     expect(r.ok).toBe(false);
     if (!r.ok) {
-      expect(r.error).toContain("extract");
+      expect(r.error).toContain("workspace");
     }
   });
 
@@ -38,7 +27,7 @@ describe("validateCursorAgentConfig", () => {
     const r = validateCursorAgentConfig({
       model: null,
       timeout: -1,
-      extract: testExtract,
+      workspace: "/tmp/test-project",
     });
     expect(r.ok).toBe(false);
   });
@@ -49,7 +38,7 @@ describe("createCursorAgent", () => {
     const agent = createCursorAgent({
       model: null,
       timeout: 0,
-      extract: testExtract,
+      workspace: "/tmp/test-project",
     });
     expect(typeof agent).toBe("function");
   });
@@ -59,7 +48,7 @@ describe("createCursorAgent", () => {
       createCursorAgent({
         model: null,
         timeout: -1,
-        extract: testExtract,
+        workspace: "/tmp/test-project",
       }),
     ).toThrow();
   });

packages/workflow-agent-cursor/src/index.ts

@@ -1,6 +1,5 @@
 import type { AgentFn } from "@uncaged/workflow-runtime";
 import { buildAgentPrompt, type SpawnCliError, spawnCli } from "@uncaged/workflow-util-agent";
-import * as z from "zod/v4";
 
 import type { CursorAgentConfig } from "./types.js";
 import { validateCursorAgentConfig } from "./validate-config.js";
@@ -8,12 +7,6 @@ import { validateCursorAgentConfig } from "./validate-config.js";
 export type { CursorAgentConfig } from "./types.js";
 export { validateCursorAgentConfig } from "./validate-config.js";
 
-const cursorWorkspaceSchema = z.object({
-  workspace: z
-    .string()
-    .describe("Absolute path to the project/repository directory the agent should work in"),
-});
-
 function throwCursorSpawnError(error: SpawnCliError): never {
   if (error.kind === "non_zero_exit") {
     throw new Error(
@@ -44,7 +37,7 @@ export function createCursorAgent(config: CursorAgentConfig): AgentFn {
   const timeoutMs = config.timeout > 0 ? config.timeout : null;
 
   return async (ctx) => {
-    const { workspace } = ctx.currentRole as unknown as { workspace: string };
+    const workspace = config.workspace;
     const fullPrompt = await buildAgentPrompt(ctx);
     const args = [
       "-p",

packages/workflow-agent-cursor/src/types.ts

@@ -1,7 +1,5 @@
-import type { ExtractFn } from "@uncaged/workflow-runtime";
-
 export type CursorAgentConfig = {
   model: string | null;
   timeout: number;
-  extract: ExtractFn;
+  workspace: string;
 };

packages/workflow-agent-cursor/src/validate-config.ts

@@ -3,8 +3,8 @@ import { err, ok, type Result } from "@uncaged/workflow-runtime";
 import type { CursorAgentConfig } from "./types.js";
 
 export function validateCursorAgentConfig(config: CursorAgentConfig): Result<void, string> {
-  if (typeof config.extract !== "function") {
-    return err("extract must be a function");
+  if (typeof config.workspace !== "string" || config.workspace.length === 0) {
+    return err("workspace must be a non-empty string (absolute path)");
   }
   if (config.timeout < 0) {
     return err("timeout must be a non-negative number (milliseconds); use 0 for no limit");