fix(agents): reapply compaction settings after resource loader reload (#65602)

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

@@ -70,6 +70,7 @@ import {
   consumeCompactionSafeguardCancelReason,
   setCompactionSafeguardCancelReason,
 } from "../pi-hooks/compaction-safeguard-runtime.js";
+import { applyPiCompactionSettingsFromConfig } from "../pi-settings.js";
 import { createPreparedEmbeddedPiSettingsManager } from "../pi-project-settings.js";
 import { createOpenClawCodingTools } from "../pi-tools.js";
 import { wrapStreamFnTextTransforms } from "../plugin-text-transforms.js";
@@ -834,6 +835,11 @@ export async function compactEmbeddedPiSessionDirect(
           extensionFactories,
         });
         await resourceLoader.reload();
+        applyPiCompactionSettingsFromConfig({
+          settingsManager,
+          cfg: params.config,
+          contextTokenBudget: ctxInfo.tokens,
+        });
       }
 
       const { builtInTools, customTools } = splitSdkTools({

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

@@ -79,6 +79,7 @@ import {
   resolveBootstrapTotalMaxChars,
 } from "../../pi-embedded-helpers.js";
 import { subscribeEmbeddedPiSession } from "../../pi-embedded-subscribe.js";
+import { applyPiCompactionSettingsFromConfig } from "../../pi-settings.js";
 import { createPreparedEmbeddedPiSettingsManager } from "../../pi-project-settings.js";
 import { applyPiAutoCompactionGuard } from "../../pi-settings.js";
 import {
@@ -1030,6 +1031,13 @@ export async function runEmbeddedAttempt(
           extensionFactories,
         });
         await resourceLoader.reload();
+        // DefaultResourceLoader.reload() rehydrates settings from disk and can drop OpenClaw
+        // compaction overrides applied in createPreparedEmbeddedPiSettingsManager.
+        applyPiCompactionSettingsFromConfig({
+          settingsManager,
+          cfg: params.config,
+          contextTokenBudget: params.contextTokenBudget,
+        });
       }
 
       // Get hook runner early so it's available when creating tools

src/agents/pi-settings.test.ts

@@ -23,6 +23,39 @@ describe("applyPiCompactionSettingsFromConfig", () => {
     });
   });
 
+  it("can restore reserveTokens after a simulated resource loader reload drops them below floor", () => {
+    const cfg = {
+      agents: { defaults: { compaction: { reserveTokensFloor: DEFAULT_PI_COMPACTION_RESERVE_TOKENS_FLOOR } } },
+    } as const;
+    let reserve = 16_384;
+    const keep = 20_000;
+    const settingsManager = {
+      getCompactionReserveTokens: () => reserve,
+      getCompactionKeepRecentTokens: () => keep,
+      applyOverrides: vi.fn((overrides: { compaction: { reserveTokens?: number } }) => {
+        if (overrides.compaction.reserveTokens !== undefined) {
+          reserve = overrides.compaction.reserveTokens;
+        }
+      }),
+    };
+
+    const first = applyPiCompactionSettingsFromConfig({
+      settingsManager,
+      cfg,
+      contextTokenBudget: 100_000,
+    });
+    expect(first.compaction.reserveTokens).toBe(DEFAULT_PI_COMPACTION_RESERVE_TOKENS_FLOOR);
+
+    reserve = 16_384;
+    const second = applyPiCompactionSettingsFromConfig({
+      settingsManager,
+      cfg,
+      contextTokenBudget: 100_000,
+    });
+    expect(second.compaction.reserveTokens).toBe(DEFAULT_PI_COMPACTION_RESERVE_TOKENS_FLOOR);
+    expect(reserve).toBe(DEFAULT_PI_COMPACTION_RESERVE_TOKENS_FLOOR);
+  });
+
   it("does not override when already above floor and not in safeguard mode", () => {
     const settingsManager = {
       getCompactionReserveTokens: () => 32_000,