fix(agents): avoid Pi resource discovery stalls

Co-authored-by: dataCenter430 <titan032000@gmail.com>

CHANGELOG.md

@@ -67,6 +67,7 @@ Docs: https://docs.openclaw.ai
 - Gateway: share serialized streaming event envelopes across eligible WebSocket and node subscribers while preserving per-client sequence numbers. (#80299) Thanks @samzong.
 - Browser: report Chrome MCP existing-session page readiness in browser status without letting status probes exceed the client timeout. Fixes #80268. (#80280) Thanks @ai-hpc.
 - WhatsApp: route opening-phase Baileys 428 connectionClosed through the WhatsApp reconnect policy and keep post-open 428 closes retryable, so transient setup socket closes retry with WhatsApp diagnostics instead of escaping as a bare `channel exited` error. Fixes #75736; mitigates #77443. Thanks @dataCenter430.
+- Agents: disable Pi's default filesystem resource discovery for embedded runs while keeping OpenClaw inline extension factories active, avoiding Windows event-loop stalls during first WhatsApp-triggered agent startup. Fixes #77443. Thanks @dataCenter430.
 - Providers/self-hosted: read model-scoped llama.cpp runtime context from `/props.default_generation_settings.n_ctx` while keeping top-level `n_ctx` as a fallback, so session budgeting reflects the loaded context window. Fixes #73664. (#74057) Thanks @brokemac79.
 - Memory: reject symlinked directory components in configured extra memory paths before reading Markdown files. (#80331) Thanks @samzong.
 - Sessions/transcripts: replace whole-file `readFile` scans with shared streaming helpers (`streamSessionTranscriptLines` and `streamSessionTranscriptLinesReverse`) for idempotency lookup, latest/tail assistant text reads, delivery-mirror dedupe, and compaction fork loading, so long-running sessions no longer materialize the full transcript in memory. Forward scans use `readline` over a bounded `createReadStream`; reverse scans read bounded chunks from the file end and decode complete JSONL lines newest-first without a fixed tail cap. Synthetic 200 MiB transcript: peak RSS delta drops from +252 MiB to +27 MiB while preserving malformed-line tolerance and idempotency-key return semantics. Fixes #54296. Thanks @jack-stormentswe.

src/agents/pi-embedded-runner/compact.ts

@@ -3,7 +3,6 @@ import os from "node:os";
 import type { AgentMessage } from "@earendil-works/pi-agent-core";
 import {
   createAgentSession,
-  DefaultResourceLoader,
   estimateTokens,
   SessionManager,
 } from "@earendil-works/pi-coding-agent";
@@ -141,6 +140,7 @@ import { buildEmbeddedMessageActionDiscoveryInput } from "./message-action-disco
 import { readPiModelContextTokens } from "./model-context-tokens.js";
 import { resolveModelAsync } from "./model.js";
 import { sanitizeSessionHistory, validateReplayTurns } from "./replay-history.js";
+import { createEmbeddedPiResourceLoader } from "./resource-loader.js";
 import { buildEmbeddedSandboxInfo } from "./sandbox-info.js";
 import { prewarmSessionFile, trackSessionManagerAccess } from "./session-manager-cache.js";
 import { resolveEmbeddedRunSkillEntries } from "./skills-runtime.js";
@@ -996,7 +996,7 @@ async function compactEmbeddedPiSessionDirectOnce(
         modelId,
         model,
       });
-      const resourceLoader = new DefaultResourceLoader({
+      const resourceLoader = createEmbeddedPiResourceLoader({
         cwd: resolvedWorkspace,
         agentDir,
         settingsManager,

src/agents/pi-embedded-runner/resource-loader.test.ts

@@ -0,0 +1,40 @@
+import { DefaultResourceLoader } from "@earendil-works/pi-coding-agent";
+import { describe, expect, it, vi } from "vitest";
+import {
+  createEmbeddedPiResourceLoader,
+  EMBEDDED_PI_RESOURCE_LOADER_DISCOVERY_OPTIONS,
+} from "./resource-loader.js";
+
+vi.mock("@earendil-works/pi-coding-agent", () => ({
+  DefaultResourceLoader: vi.fn(function DefaultResourceLoader(
+    this: Record<string, unknown>,
+    options: unknown,
+  ) {
+    Object.assign(this, {
+      options,
+      reload: vi.fn(async () => undefined),
+    });
+  }),
+}));
+
+describe("createEmbeddedPiResourceLoader", () => {
+  it("keeps inline extensions but disables Pi filesystem discovery", () => {
+    const settingsManager = {};
+    const extensionFactories = [vi.fn()];
+
+    createEmbeddedPiResourceLoader({
+      cwd: "/workspace",
+      agentDir: "/agent",
+      settingsManager: settingsManager as never,
+      extensionFactories: extensionFactories as never,
+    });
+
+    expect(DefaultResourceLoader).toHaveBeenCalledWith({
+      cwd: "/workspace",
+      agentDir: "/agent",
+      settingsManager,
+      extensionFactories,
+      ...EMBEDDED_PI_RESOURCE_LOADER_DISCOVERY_OPTIONS,
+    });
+  });
+});

src/agents/pi-embedded-runner/resource-loader.ts

@@ -0,0 +1,23 @@
+import { DefaultResourceLoader } from "@earendil-works/pi-coding-agent";
+
+type DefaultResourceLoaderInit = ConstructorParameters<typeof DefaultResourceLoader>[0];
+
+export const EMBEDDED_PI_RESOURCE_LOADER_DISCOVERY_OPTIONS = {
+  noExtensions: true,
+  noSkills: true,
+  noPromptTemplates: true,
+  noThemes: true,
+  noContextFiles: true,
+} satisfies Partial<DefaultResourceLoaderInit>;
+
+export function createEmbeddedPiResourceLoader(
+  options: Pick<
+    DefaultResourceLoaderInit,
+    "cwd" | "agentDir" | "settingsManager" | "extensionFactories"
+  >,
+): DefaultResourceLoader {
+  return new DefaultResourceLoader({
+    ...options,
+    ...EMBEDDED_PI_RESOURCE_LOADER_DISCOVERY_OPTIONS,
+  });
+}

src/agents/pi-embedded-runner/run/attempt.ts

@@ -2,11 +2,7 @@ import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
 import type { AgentMessage } from "@earendil-works/pi-agent-core";
-import {
-  createAgentSession,
-  DefaultResourceLoader,
-  SessionManager,
-} from "@earendil-works/pi-coding-agent";
+import { createAgentSession, SessionManager } from "@earendil-works/pi-coding-agent";
 import { isAcpRuntimeSpawnAvailable } from "../../../acp/runtime/availability.js";
 import { buildHierarchyReinforcementMessage } from "../../../auto-reply/handoff-summarizer.js";
 import { filterHeartbeatPairs } from "../../../auto-reply/heartbeat-filter.js";
@@ -223,6 +219,7 @@ import {
   validateReplayTurns,
 } from "../replay-history.js";
 import { observeReplayMetadata, replayMetadataFromState } from "../replay-state.js";
+import { createEmbeddedPiResourceLoader } from "../resource-loader.js";
 import {
   clearActiveEmbeddedRun,
   type EmbeddedPiQueueHandle,
@@ -1715,7 +1712,7 @@ export async function runEmbeddedAttempt(
         modelId: params.modelId,
         model: params.model,
       });
-      const resourceLoader = new DefaultResourceLoader({
+      const resourceLoader = createEmbeddedPiResourceLoader({
         cwd: resolvedWorkspace,
         agentDir,
         settingsManager,