fix: compaction safeguard extension not loading in production builds (openclaw#22349) thanks @Glucksberg

Verified:
- pnpm build
- pnpm check
- pnpm test:macmini (local run had unrelated baseline failures; Tak approved proceed)

Co-authored-by: Glucksberg <80581902+Glucksberg@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

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

@@ -3,6 +3,7 @@ import os from "node:os";
 import type { AgentMessage } from "@mariozechner/pi-agent-core";
 import {
   createAgentSession,
+  DefaultResourceLoader,
   estimateTokens,
   SessionManager,
   SettingsManager,
@@ -60,7 +61,7 @@ import {
   compactWithSafetyTimeout,
   EMBEDDED_COMPACTION_TIMEOUT_MS,
 } from "./compaction-safety-timeout.js";
-import { buildEmbeddedExtensionPaths } from "./extensions.js";
+import { buildEmbeddedExtensionFactories } from "./extensions.js";
 import {
   logToolSchemasForGoogle,
   sanitizeSessionHistory,
@@ -533,14 +534,27 @@ export async function compactEmbeddedPiSessionDirect(
         settingsManager,
         cfg: params.config,
       });
-      // Call for side effects (sets compaction/pruning runtime state)
-      buildEmbeddedExtensionPaths({
+      // Sets compaction/pruning runtime state and returns extension factories
+      // that must be passed to the resource loader for the safeguard to be active.
+      const extensionFactories = buildEmbeddedExtensionFactories({
         cfg: params.config,
         sessionManager,
         provider,
         modelId,
         model,
       });
+      // Only create an explicit resource loader when there are extension factories
+      // to register; otherwise let createAgentSession use its built-in default.
+      let resourceLoader: DefaultResourceLoader | undefined;
+      if (extensionFactories.length > 0) {
+        resourceLoader = new DefaultResourceLoader({
+          cwd: resolvedWorkspace,
+          agentDir,
+          settingsManager,
+          extensionFactories,
+        });
+        await resourceLoader.reload();
+      }
 
       const { builtInTools, customTools } = splitSdkTools({
         tools,
@@ -558,6 +572,7 @@ export async function compactEmbeddedPiSessionDirect(
         customTools,
         sessionManager,
         settingsManager,
+        resourceLoader,
       });
       applySystemPromptOverrideToSession(session, systemPromptOverride());