feat: CLI v2.1.68–v2.1.74 compatibility updates (#221)

## Summary

This PR brings Hikari Desktop up to full compatibility with Claude Code CLI versions v2.1.68 through v2.1.74, implementing all changelog items audited in issues #200–#218.

## Changes

### Bug Fixes
- Remove deprecated Claude Opus 4.0 and 4.1 models from the model selector
- Auto-migrate users pinned to deprecated models to Opus 4.6

### New Features
- Add cron tool support (`CronCreate`, `CronDelete`, `CronList`) with character state mapping and `CLAUDE_CODE_DISABLE_CRON` settings toggle
- Handle `EnterWorktree` and `ExitWorktree` tools in character state mapping and tool display
- Add CLI update check with npm registry indicator in the version bar
- Add `agent_type` field and support the Agent tool rename from CLI v2.1.69
- Consume `worktree` field from status line hook events
- Display per-agent model override in the agent monitor tree
- Expose Claude Code CLI built-in slash commands (`/simplify`, `/loop`, `/batch`, `/memory`, `/context`) in the command menu with CLI badges
- Add `includeGitInstructions` toggle in settings
- Add `ENABLE_CLAUDEAI_MCP_SERVERS` opt-out setting
- Linkify MCP binary file paths (PDFs, audio, Office docs) in markdown output
- Add auto-memory panel, `/memory` slash command shortcut, and unified toast notification system
- Toast notifications for `WorktreeCreate` and `WorktreeRemove` hook events
- Sort session resume list by most recent activity, with most recent user message as preview
- Convert WSL Linux paths to Windows UNC paths when opening binary files via `open_binary_file` command
- Expose `autoMemoryDirectory` setting in ConfigSidebar (Agent Settings section)
- Add `/context` as a CLI built-in in the slash command menu
- Expose `modelOverrides` setting as a JSON textarea in ConfigSidebar (for AWS Bedrock, Google Vertex, etc.)

> **Note:** The CLI update check commit does not have a corresponding issue — it was a bonus addition during the audit sprint.

## Closes

Closes #200
Closes #201
Closes #202
Closes #205
Closes #206
Closes #207
Closes #208
Closes #209
Closes #210
Closes #211
Closes #212
Closes #213
Closes #214
Closes #215
Closes #216
Closes #217
Closes #218

Reviewed-on: #221
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

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 "$lib/types/messages";
   import StatsDisplay from "./StatsDisplay.svelte";
   import AboutPanel from "./AboutPanel.svelte";
@@ -24,6 +25,7 @@
   import ChangelogPanel from "./ChangelogPanel.svelte";
   import TaskLoopPanel from "./TaskLoopPanel.svelte";
   import WorkflowPanel from "./WorkflowPanel.svelte";
+  import MemoryBrowserPanel from "./MemoryBrowserPanel.svelte";
   import { injectTextStore } from "$lib/stores/projectContext";
 
   const DISCORD_URL = "https://chat.nhcarrigan.com";
@@ -69,6 +71,10 @@
   let showChangelog = $state(false);
   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);
@@ -176,6 +182,19 @@
       <span>Session History</span>
     </button>
 
+    <!-- Memory Manager -->
+    <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"
+          stroke-linejoin="round"
+          stroke-width="2"
+          d="M9.663 17h4.673M12 3v1m6.364 1.636l-.707.707M21 12h-1M4 12H3m3.343-5.657l-.707-.707m2.828 9.9a5 5 0 117.072 0l-.548.547A3.374 3.374 0 0014 18.469V19a2 2 0 11-4 0v-.531c0-.895-.356-1.754-.988-2.386l-.548-.547z"
+        />
+      </svg>
+      <span>Memory Manager</span>
+    </button>
+
     <!-- To-Do List -->
     <button onclick={menuAction(() => (showTodoPanel = true))} class="nav-item">
       <svg class="w-5 h-5 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -547,6 +566,10 @@
   />
 {/if}
 
+{#if showMemoryPanel}
+  <MemoryBrowserPanel isOpen={showMemoryPanel} onClose={() => memoryBrowserStore.close()} />
+{/if}
+
 {#if showWorkflowPanel}
   <WorkflowPanel
     onClose={() => (showWorkflowPanel = false)}