fix: open memory browser panel for /memory command and default agent type to general-purpose

src/lib/components/NavMenu.svelte

@@ -6,6 +6,7 @@
   import { editorStore } from "$lib/stores/editor";
   import { configStore } from "$lib/stores/config";
   import { debugConsoleStore } from "$lib/stores/debugConsole";
+  import { memoryBrowserStore } from "$lib/stores/memoryBrowser";
   import type { ConnectionStatus } from "$lib/types/messages";
   import StatsDisplay from "./StatsDisplay.svelte";
   import AboutPanel from "./AboutPanel.svelte";
@@ -71,6 +72,9 @@
   let showTaskLoop = $state(false);
   let showWorkflowPanel = $state(false);
   let showMemoryPanel = $state(false);
+  memoryBrowserStore.subscribe((s) => {
+    showMemoryPanel = s.isOpen;
+  });
 
   const progress = $derived($achievementProgress);
   const activeAgentCount = $derived($runningAgentCount);
@@ -179,7 +183,7 @@
     </button>
 
     <!-- Memory Manager -->
-    <button onclick={menuAction(() => (showMemoryPanel = true))} class="nav-item">
+    <button onclick={menuAction(() => memoryBrowserStore.open())} class="nav-item">
       <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
         <path
           stroke-linecap="round"
@@ -563,7 +567,7 @@
 {/if}
 
 {#if showMemoryPanel}
-  <MemoryBrowserPanel isOpen={showMemoryPanel} onClose={() => (showMemoryPanel = false)} />
+  <MemoryBrowserPanel isOpen={showMemoryPanel} onClose={() => memoryBrowserStore.close()} />
 {/if}
 
 {#if showWorkflowPanel}