From 9d600b9e8f47aff8c991884955c9cef60237ef9a Mon Sep 17 00:00:00 2001
From: Mahima Shanware <mahima.shanware@gmail.com>
Date: Mon, 6 Apr 2026 19:13:49 +0000
Subject: [PATCH] perf(core): cache initialized plan directories

Adds caching to getPlansDir to avoid redundant synchronous disk I/O and repeated workspace context registrations.
---
 packages/core/src/config/config.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/packages/core/src/config/config.ts b/packages/core/src/config/config.ts
index 7fd1a87d3e..c4931e3c13 100644
--- a/packages/core/src/config/config.ts
+++ b/packages/core/src/config/config.ts
@@ -781,6 +781,7 @@ export class Config implements McpContext, AgentLoopContext {
   private mcpServers: Record<string, MCPServerConfig> | undefined;
   private readonly mcpEnablementCallbacks?: McpEnablementCallbacks;
   private activeExtensionContext?: string;
+  private initializedPlanDirs = new Set<string>();
   private readonly extensionPlanDirs: Record<string, string>;
   private userMemory: string | HierarchicalMemory;
   private geminiMdFileCount: number;
@@ -2226,6 +2227,11 @@ export class Config implements McpContext, AgentLoopContext {
 
   getPlansDir(): string {
     const plansDir = this.storage.getPlansDir(this.getActiveExtensionPlanDir());
+
+    if (this.initializedPlanDirs.has(plansDir)) {
+      return plansDir;
+    }
+
     try {
       if (!fs.existsSync(plansDir)) {
         fs.mkdirSync(plansDir, { recursive: true });
@@ -2241,6 +2247,7 @@ export class Config implements McpContext, AgentLoopContext {
         // Ignore failures in mock environments
       }
       this.workspaceContext.addDirectory(realPlansDir);
+      this.initializedPlanDirs.add(plansDir);
     } catch (e: unknown) {
       const errorMessage = e instanceof Error ? e.message : String(e);
       throw new Error(