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/CliVersion.test.ts

@@ -19,7 +19,7 @@
 
 import { describe, it, expect } from "vitest";
 
-const SUPPORTED_CLI_VERSION = "2.1.53";
+const SUPPORTED_CLI_VERSION = "2.1.74";
 
 function compareVersions(a: string, b: string): number {
   const aParts = a.split(".").map(Number);
@@ -41,7 +41,7 @@ describe("SUPPORTED_CLI_VERSION", () => {
   });
 
   it("matches the expected audited version", () => {
-    expect(SUPPORTED_CLI_VERSION).toBe("2.1.53");
+    expect(SUPPORTED_CLI_VERSION).toBe("2.1.74");
   });
 });
 
@@ -128,7 +128,55 @@ describe("compareVersions", () => {
     });
 
     it("returns 0 for exactly the supported version", () => {
-      expect(compareVersions("2.1.53", SUPPORTED_CLI_VERSION)).toBe(0);
+      expect(compareVersions("2.1.74", SUPPORTED_CLI_VERSION)).toBe(0);
     });
   });
 });
+
+// Mirrors the updateAvailable derived logic in CliVersion.svelte
+function isUpdateAvailable(installedVersion: string, latestNpmVersion: string | null): boolean {
+  if (!latestNpmVersion || installedVersion === "Loading..." || installedVersion === "Unknown") {
+    return false;
+  }
+  const semverMatch = /(\d+\.\d+\.\d+)/.exec(installedVersion);
+  if (!semverMatch) return false;
+  return compareVersions(semverMatch[1], latestNpmVersion) < 0;
+}
+
+describe("updateAvailable", () => {
+  it("returns false when latestNpmVersion is null", () => {
+    expect(isUpdateAvailable("2.1.70", null)).toBe(false);
+  });
+
+  it("returns false when installed is Loading...", () => {
+    expect(isUpdateAvailable("Loading...", "2.1.74")).toBe(false);
+  });
+
+  it("returns false when installed is Unknown", () => {
+    expect(isUpdateAvailable("Unknown", "2.1.74")).toBe(false);
+  });
+
+  it("returns false when installed equals latest", () => {
+    expect(isUpdateAvailable("2.1.74", "2.1.74")).toBe(false);
+  });
+
+  it("returns false when installed is ahead of latest", () => {
+    expect(isUpdateAvailable("2.1.75", "2.1.74")).toBe(false);
+  });
+
+  it("returns true when installed is behind latest", () => {
+    expect(isUpdateAvailable("2.1.70", "2.1.74")).toBe(true);
+  });
+
+  it("returns true when installed has a lower minor version", () => {
+    expect(isUpdateAvailable("2.0.99", "2.1.74")).toBe(true);
+  });
+
+  it("handles version strings with extra info like '2.1.70 (build 123)'", () => {
+    expect(isUpdateAvailable("2.1.70 (build 123)", "2.1.74")).toBe(true);
+  });
+
+  it("returns false for unparseable installed version", () => {
+    expect(isUpdateAvailable("not-a-version", "2.1.74")).toBe(false);
+  });
+});