fix: cover CLI session prompt hash reuse (#69236) (thanks @stainlu)

src/agents/cli-runner/prepare.test.ts

@@ -6,6 +6,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import type { OpenClawConfig } from "../../config/types.openclaw.js";
 import { getGlobalHookRunner } from "../../plugins/hook-runner-global.js";
 import { __testing as cliBackendsTesting } from "../cli-backends.js";
+import { hashCliSessionText } from "../cli-session.js";
 import { buildActiveMusicGenerationTaskPromptContextForSession } from "../music-generation-task-status.js";
 import { buildActiveVideoGenerationTaskPromptContextForSession } from "../video-generation-task-status.js";
 import {
@@ -52,11 +53,15 @@ const mockBuildActiveMusicGenerationTaskPromptContextForSession = vi.mocked(
   buildActiveMusicGenerationTaskPromptContextForSession,
 );
 
-function createCliBackendConfig(params: { systemPromptOverride?: string } = {}): OpenClawConfig {
+function createCliBackendConfig(
+  params: { systemPromptOverride?: string | null } = {},
+): OpenClawConfig {
   return {
     agents: {
       defaults: {
-        systemPromptOverride: params.systemPromptOverride ?? "test system prompt",
+        ...(params.systemPromptOverride !== null
+          ? { systemPromptOverride: params.systemPromptOverride ?? "test system prompt" }
+          : {}),
         cliBackends: {
           "test-cli": {
             command: "test-cli",
@@ -308,7 +313,7 @@ describe("shouldSkipLocalCliCredentialEpoch", () => {
         model: "test-model",
         timeoutMs: 1_000,
         runId: "run-test-legacy-merge",
-        config: createCliBackendConfig(),
+        config: createCliBackendConfig({ systemPromptOverride: null }),
       });
 
       expect(context.params.prompt).toBe("prompt prepend\n\nlegacy prepend\n\nlatest ask");
@@ -355,6 +360,63 @@ describe("shouldSkipLocalCliCredentialEpoch", () => {
     }
   });
 
+  it("uses explicit static prompt text for CLI session reuse hashing", async () => {
+    const { dir, sessionFile } = createSessionFile();
+    try {
+      const context = await prepareCliRunContext({
+        sessionId: "session-test",
+        sessionFile,
+        workspaceDir: dir,
+        prompt: "latest ask",
+        provider: "test-cli",
+        model: "test-model",
+        timeoutMs: 1_000,
+        runId: "run-test-static-prompt",
+        extraSystemPrompt: "## Inbound Context\nchannel=telegram",
+        extraSystemPromptStatic: "",
+        cliSessionBinding: {
+          sessionId: "cli-session",
+        },
+        config: createCliBackendConfig({ systemPromptOverride: null }),
+      });
+
+      expect(context.systemPrompt).toContain("## Inbound Context\nchannel=telegram");
+      expect(context.extraSystemPromptHash).toBeUndefined();
+      expect(context.reusableCliSession).toEqual({ sessionId: "cli-session" });
+    } finally {
+      fs.rmSync(dir, { recursive: true, force: true });
+    }
+  });
+
+  it("ignores volatile prompt text when static prompt text matches", async () => {
+    const { dir, sessionFile } = createSessionFile();
+    try {
+      const staticPrompt = "## Direct Context\nYou are in a Telegram direct conversation.";
+      const context = await prepareCliRunContext({
+        sessionId: "session-test",
+        sessionFile,
+        workspaceDir: dir,
+        prompt: "latest ask",
+        provider: "test-cli",
+        model: "test-model",
+        timeoutMs: 1_000,
+        runId: "run-test-volatile-prompt",
+        extraSystemPrompt: `## Inbound Context\nchannel=heartbeat\n\n${staticPrompt}`,
+        extraSystemPromptStatic: staticPrompt,
+        cliSessionBinding: {
+          sessionId: "cli-session",
+          extraSystemPromptHash: hashCliSessionText(staticPrompt),
+        },
+        config: createCliBackendConfig(),
+      });
+
+      expect(context.extraSystemPromptHash).toBe(hashCliSessionText(staticPrompt));
+      expect(context.reusableCliSession).toEqual({ sessionId: "cli-session" });
+    } finally {
+      fs.rmSync(dir, { recursive: true, force: true });
+    }
+  });
+
   it("applies direct-run prepend system context helpers on the CLI path", async () => {
     const { dir, sessionFile } = createSessionFile();
     try {