fix: harden queue retry debounce and add regression tests

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

@@ -1,7 +1,11 @@
 import type { AgentMessage } from "@mariozechner/pi-agent-core";
 import type { ImageContent } from "@mariozechner/pi-ai";
 import { describe, expect, it, vi } from "vitest";
-import { injectHistoryImagesIntoMessages, resolvePromptBuildHookResult } from "./attempt.js";
+import {
+  injectHistoryImagesIntoMessages,
+  resolvePromptBuildHookResult,
+  resolvePromptModeForSession,
+} from "./attempt.js";
 
 describe("injectHistoryImagesIntoMessages", () => {
   const image: ImageContent = { type: "image", data: "abc", mimeType: "image/png" };
@@ -103,3 +107,14 @@ describe("resolvePromptBuildHookResult", () => {
     expect(result.prependContext).toBe("from-hook");
   });
 });
+
+describe("resolvePromptModeForSession", () => {
+  it("uses minimal mode for subagent sessions", () => {
+    expect(resolvePromptModeForSession("agent:main:subagent:child")).toBe("minimal");
+  });
+
+  it("uses full mode for cron sessions", () => {
+    expect(resolvePromptModeForSession("agent:main:cron:job-1")).toBe("full");
+    expect(resolvePromptModeForSession("agent:main:cron:job-1:run:run-abc")).toBe("full");
+  });
+});

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

@@ -221,6 +221,13 @@ export async function resolvePromptBuildHookResult(params: {
   };
 }
 
+export function resolvePromptModeForSession(sessionKey?: string): "minimal" | "full" {
+  if (!sessionKey) {
+    return "full";
+  }
+  return isSubagentSessionKey(sessionKey) ? "minimal" : "full";
+}
+
 function summarizeMessagePayload(msg: AgentMessage): { textChars: number; imageBlocks: number } {
   const content = (msg as { content?: unknown }).content;
   if (typeof content === "string") {
@@ -494,7 +501,7 @@ export async function runEmbeddedAttempt(
       },
     });
     const isDefaultAgent = sessionAgentId === defaultAgentId;
-    const promptMode = isSubagentSessionKey(params.sessionKey) ? "minimal" : "full";
+    const promptMode = resolvePromptModeForSession(params.sessionKey);
     const docsPath = await resolveOpenClawDocsPath({
       workspaceDir: effectiveWorkspace,
       argv1: process.argv[1],