feat: cursor agent auto-extracts workspace from context via LLM

- workflow-agent-cursor: workspace config now optional (string | null)
- When null, uses LLM call to extract workspace path from AgentContext
  (previous steps' meta, start prompt) before spawning cursor-agent CLI
- Requires llmProvider when workspace is null
- develop bundle-entry: switched from hermes to cursor agent for all roles
- solve-issue bundle-entry: created, developer role uses workflowAsAgent('develop'),
  preparer/submitter remain hermes

小橘 <xiaoju@shazhou.work>

packages/workflow-agent-cursor/src/extract-workspace.ts

@@ -0,0 +1,83 @@
+import type { AgentContext, LlmProvider } from "@uncaged/workflow-protocol";
+import { createLlmFn } from "@uncaged/workflow-reactor";
+import type { ChatMessage } from "@uncaged/workflow-reactor";
+
+const EXTRACT_SYSTEM = `You are a workspace-path extractor. Given a workflow agent context (task description and previous step outputs), identify the absolute filesystem path of the project workspace where code changes should be made.
+
+Reply with ONLY the absolute path, nothing else. Example: /home/user/repos/my-project
+
+If you cannot determine the workspace path, reply with: UNKNOWN`;
+
+function buildExtractionInput(ctx: AgentContext): string {
+  const lines: string[] = [];
+  lines.push("## Task");
+  lines.push(ctx.start.content);
+
+  for (const step of ctx.steps) {
+    lines.push("");
+    lines.push(`## Step: ${step.role}`);
+    lines.push(`Meta: ${JSON.stringify(step.meta)}`);
+  }
+
+  return lines.join("\n");
+}
+
+export async function extractWorkspacePath(
+  ctx: AgentContext,
+  provider: LlmProvider,
+): Promise<string | null> {
+  const llm = createLlmFn(provider);
+  const messages: ChatMessage[] = [
+    { role: "system", content: EXTRACT_SYSTEM },
+    { role: "user", content: buildExtractionInput(ctx) },
+  ];
+
+  const result = await llm({ messages, tools: [] });
+  if (!result.ok) {
+    return null;
+  }
+
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(result.value) as unknown;
+  } catch {
+    return null;
+  }
+
+  if (
+    typeof parsed !== "object" ||
+    parsed === null ||
+    !("choices" in parsed) ||
+    !Array.isArray((parsed as Record<string, unknown>).choices)
+  ) {
+    return null;
+  }
+
+  const choices = (parsed as Record<string, unknown>).choices as unknown[];
+  if (choices.length === 0) {
+    return null;
+  }
+
+  const first = choices[0];
+  if (
+    typeof first !== "object" ||
+    first === null ||
+    !("message" in first) ||
+    typeof (first as Record<string, unknown>).message !== "object"
+  ) {
+    return null;
+  }
+
+  const message = (first as Record<string, unknown>).message as Record<string, unknown>;
+  const content = message.content;
+  if (typeof content !== "string") {
+    return null;
+  }
+
+  const trimmed = content.trim();
+  if (trimmed === "UNKNOWN" || !trimmed.startsWith("/")) {
+    return null;
+  }
+
+  return trimmed;
+}

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

@@ -1,6 +1,7 @@
 import type { AgentFn } from "@uncaged/workflow-runtime";
 import { buildAgentPrompt, type SpawnCliError, spawnCli } from "@uncaged/workflow-util-agent";
 
+import { extractWorkspacePath } from "./extract-workspace.js";
 import type { CursorAgentConfig } from "./types.js";
 import { validateCursorAgentConfig } from "./validate-config.js";
 
@@ -26,7 +27,7 @@ function resolveCursorModel(model: string | null): string {
   return model === null ? "auto" : model;
 }
 
-/** Runs `cursor-agent` with workspace from {@link CursorAgentConfig.extract} and prompt from context. */
+/** Runs `cursor-agent` with workspace from config or extracted from context via LLM. */
 export function createCursorAgent(config: CursorAgentConfig): AgentFn {
   const validated = validateCursorAgentConfig(config);
   if (!validated.ok) {
@@ -37,7 +38,20 @@ export function createCursorAgent(config: CursorAgentConfig): AgentFn {
   const timeoutMs = config.timeout > 0 ? config.timeout : null;
 
   return async (ctx) => {
-    const workspace = config.workspace;
+    let workspace: string;
+
+    if (config.workspace !== null) {
+      workspace = config.workspace;
+    } else {
+      const extracted = await extractWorkspacePath(ctx, config.llmProvider!);
+      if (extracted === null) {
+        throw new Error(
+          "cursor-agent: failed to extract workspace path from context. Provide an explicit workspace or ensure previous steps include a repoPath.",
+        );
+      }
+      workspace = extracted;
+    }
+
     const fullPrompt = await buildAgentPrompt(ctx);
     const args = [
       "-p",

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

@@ -1,5 +1,10 @@
+import type { LlmProvider } from "@uncaged/workflow-protocol";
+
 export type CursorAgentConfig = {
   model: string | null;
   timeout: number;
-  workspace: string;
+  /** Explicit workspace path. When `null`, the agent extracts workspace from AgentContext via a ReAct LLM call. */
+  workspace: string | null;
+  /** Required when `workspace` is `null` — LLM provider used for workspace extraction. */
+  llmProvider: LlmProvider | null;
 };

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

@@ -1,10 +1,13 @@
-import { err, ok, type Result } from "@uncaged/workflow-runtime";
+import { err, ok, type Result } from "@uncaged/workflow-protocol";
 
 import type { CursorAgentConfig } from "./types.js";
 
 export function validateCursorAgentConfig(config: CursorAgentConfig): Result<void, string> {
-  if (typeof config.workspace !== "string" || config.workspace.length === 0) {
-    return err("workspace must be a non-empty string (absolute path)");
+  if (config.workspace !== null && config.workspace.length === 0) {
+    return err("workspace must be a non-empty string (absolute path) or null for auto-detection");
+  }
+  if (config.workspace === null && config.llmProvider === null) {
+    return err("llmProvider is required when workspace is null (needed for workspace extraction)");
   }
   if (config.timeout < 0) {
     return err("timeout must be a non-negative number (milliseconds); use 0 for no limit");