fix(runner): seed clean workspace task brief

src/utils/clean-context-runner.test.ts

@@ -0,0 +1,59 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+import { CleanContextRunner } from "./clean-context-runner.js";
+
+describe("CleanContextRunner", () => {
+  it("seeds default clean workspace with task brief files and passes explicit prompts", async () => {
+    const calls: Array<Record<string, unknown>> = [];
+    const runner = new CleanContextRunner({
+      config: {
+        agents: {
+          defaults: {
+            systemPromptOverride: "existing host prompt",
+          },
+        },
+      },
+      agentRuntime: {
+        runEmbeddedPiAgent: (async (args: Record<string, unknown>) => {
+          calls.push(args);
+          return {
+            payloads: [
+              {
+                text: "[]",
+              },
+            ],
+          };
+        }) as never,
+      },
+    });
+
+    const result = await runner.run({
+      taskId: "l1-extraction",
+      systemPrompt: "extract memories as JSON",
+      prompt: "conversation payload",
+      timeoutMs: 1000,
+    });
+
+    expect(result).toBe("[]");
+    expect(calls).toHaveLength(1);
+    const call = calls[0];
+    expect(call.prompt).toBe("conversation payload");
+    expect(call.extraSystemPrompt).toBe("extract memories as JSON");
+    expect(call.disableTools).toBe(true);
+    expect((call.config as {
+      agents: { defaults: { systemPromptOverride: string } };
+    }).agents.defaults.systemPromptOverride).toBe("extract memories as JSON");
+
+    const workspaceDir = call.workspaceDir;
+    expect(typeof workspaceDir).toBe("string");
+    const agents = await fs.readFile(path.join(workspaceDir as string, "AGENTS.md"), "utf8");
+    const soul = await fs.readFile(path.join(workspaceDir as string, "SOUL.md"), "utf8");
+
+    expect(agents.length).toBeGreaterThan(76);
+    expect(agents).toContain("TencentDB Agent Memory");
+    expect(agents).toContain("Follow the explicit system prompt and user prompt");
+    expect(soul.length).toBeGreaterThan(76);
+    expect(soul).toContain("system and user prompts");
+  });
+});

src/utils/clean-context-runner.ts

@@ -285,14 +285,38 @@ export interface CleanContextRunnerOptions {
   logger?: RunnerLogger;
 }
 
-// Stable empty directory used as default workspaceDir so that:
-// 1. Bootstrap/skills scans find nothing → clean LLM context
+const CLEAN_WORKSPACE_AGENTS = `# TencentDB Agent Memory Background Task
+
+This is an isolated workspace for TencentDB Agent Memory background LLM tasks.
+Do not infer task requirements from repository files in this directory.
+Follow the explicit system prompt and user prompt passed with the current run.
+Return only the output format requested by that prompt.
+`;
+
+const CLEAN_WORKSPACE_SOUL = `You are running an isolated TencentDB Agent Memory background task.
+The real task instructions are supplied directly in the current system and user prompts.
+Ignore the absence of project files here and answer according to those prompts only.
+`;
+
+async function ensureCleanWorkspaceBrief(dir: string): Promise<void> {
+  await Promise.all([
+    fs.writeFile(path.join(dir, "AGENTS.md"), CLEAN_WORKSPACE_AGENTS, "utf8"),
+    fs.writeFile(path.join(dir, "SOUL.md"), CLEAN_WORKSPACE_SOUL, "utf8"),
+  ]);
+}
+
+// Stable low-context directory used as default workspaceDir so that:
+// 1. Bootstrap/skills scans see only a tiny task brief → clean LLM context
 // 2. The path is constant → plugin cacheKey stays stable (no re-registration)
 let _cleanWorkspaceDir: string | undefined;
 async function getCleanWorkspaceDir(): Promise<string> {
-  if (_cleanWorkspaceDir) return _cleanWorkspaceDir;
+  if (_cleanWorkspaceDir) {
+    await ensureCleanWorkspaceBrief(_cleanWorkspaceDir);
+    return _cleanWorkspaceDir;
+  }
   const dir = path.join(resolveOpenClawTmpDir(), "memory-tdai-clean-workspace");
   await fs.mkdir(dir, { recursive: true });
+  await ensureCleanWorkspaceBrief(dir);
   _cleanWorkspaceDir = dir;
   return dir;
 }