fix(FN-000): skip qmd index mutations in test runs

Why: tests were leaking ~700 per-temp-dir collection registrations
into the user's global ~/.config/qmd/index.yml because searchWithQmd
and the agent-memory qmd path called execFile("qmd", ...) with the
real binary, bypassing shouldSkipBackgroundQmdRefresh() which only
guarded the schedule* wrappers.

Guard both direct-execFile paths under the same skip flag and fall
back to file-based agent memory search when skipping.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/core/src/index.ts

@@ -452,6 +452,7 @@ export {
   buildQmdRefreshCommands,
   refreshQmdProjectMemoryIndex,
   scheduleQmdProjectMemoryRefresh,
+  shouldSkipBackgroundQmdRefresh,
   installQmd,
   ensureQmdInstalled,
   ensureQmdInstalledAndRefresh,

packages/core/src/memory-backend.ts

@@ -857,6 +857,9 @@ function normalizeQmdSearchResultPath(rootDir: string, rawPath: unknown): string
 }
 
 async function searchWithQmd(rootDir: string, options: MemorySearchOptions): Promise<MemorySearchResult[]> {
+  if (shouldSkipBackgroundQmdRefresh()) {
+    return [];
+  }
   const command = "qmd";
   const limit = Math.max(1, Math.min(options.limit ?? 5, 20));
   try {

packages/engine/src/agent-tools.ts

@@ -12,7 +12,7 @@ import { existsSync } from "node:fs";
 import { createHash } from "node:crypto";
 import { join } from "node:path";
 import type { AgentStore, AgentState, AgentCapability, TaskDocument, TaskDocumentCreateInput, TaskStore, RunMutationContext, MessageStore, Message } from "@fusion/core";
-import { dailyMemoryPath, ensureOpenClawMemoryFiles, getMemoryBackendCapabilities, getProjectMemory, isEphemeralAgent, memoryLongTermPath, resolveMemoryBackend, scheduleQmdProjectMemoryRefresh, searchProjectMemory } from "@fusion/core";
+import { dailyMemoryPath, ensureOpenClawMemoryFiles, getMemoryBackendCapabilities, getProjectMemory, isEphemeralAgent, memoryLongTermPath, resolveMemoryBackend, scheduleQmdProjectMemoryRefresh, searchProjectMemory, shouldSkipBackgroundQmdRefresh } from "@fusion/core";
 import type { ToolDefinition } from "@mariozechner/pi-coding-agent";
 import { Type, type Static } from "@mariozechner/pi-ai";
 import type { AgentReflectionService } from "./agent-reflection.js";
@@ -283,6 +283,9 @@ async function searchAgentMemoryFile(rootDir: string, agentMemory: AgentMemoryCo
 }
 
 async function refreshAgentMemoryQmdIndex(rootDir: string, agentMemory: AgentMemoryContext): Promise<void> {
+  if (shouldSkipBackgroundQmdRefresh()) {
+    return;
+  }
   await syncAgentMemoryFile(rootDir, agentMemory);
   const key = `${rootDir}:${agentMemory.agentId}`;
   const now = Date.now();
@@ -330,6 +333,9 @@ async function searchAgentMemoryWithQmd(rootDir: string, agentMemory: AgentMemor
   if (!agentMemory.memory?.trim()) {
     return [];
   }
+  if (shouldSkipBackgroundQmdRefresh()) {
+    return searchAgentMemoryFile(rootDir, agentMemory, query, limit);
+  }
   try {
     await refreshAgentMemoryQmdIndex(rootDir, agentMemory);
     const { execFile } = await import("node:child_process");