You are an expert code reviewer. Your task is to analyze the provided code files and provide a comprehensive code review. For each file, consider:

1. Code Quality: Assess readability, maintainability, and adherence to best practices
2. Potential Issues: Identify bugs, security vulnerabilities, or performance concerns
3. Suggestions: Provide specific recommendations for improvements

Format your review as follows:
1. Start with a brief overview of all files
2. For each file, provide:
   - A summary of the file's purpose
   - Key findings (both positive and negative)
   - Specific recommendations
3. End with any overall suggestions for the codebase

Your review should be detailed but concise, focusing on the most important aspects of the code.

Files to review:

File: ./src/lib/components/ThemeToggle.svelte
Content:
<script lang="ts">
  import * as m from "$lib/paraglide/messages.js";
  import { onMount } from "svelte";
  import { browser } from "$app/environment";
  import Sun from "$lib/icons/Sun.svelte";
  import Moon from "$lib/icons/Moon.svelte";
  import { Button } from "$lib/components/ui/button";
  import * as DropdownMenu from "$lib/components/ui/dropdown-menu/";

  type Theme = "system" | "light" | "dark";
  let currentTheme: Theme = "system";
  let open = false;

  function setTheme(theme: Theme) {
    currentTheme = theme;
    if (browser) {
      document.cookie = `theme=${theme};path=/;max-age=31536000;`;
      applyTheme(theme);
    }
    open = false;
  }

  function applyTheme(theme: Theme) {
    const isDark =
      theme === "dark" ||
      (theme === "system" &&
        window.matchMedia("(prefers-color-scheme: dark)").matches);

    document.documentElement.classList.remove("light", "dark", "system");
    document.documentElement.classList.add(theme);
    document.documentElement.classList.toggle("dark", isDark);
  }

  function getCookie(name: string): string | null {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop()?.split(";").shift() || null;
    return null;
  }

  onMount(() => {
    const savedTheme = getCookie("theme") as Theme | null;
    currentTheme = savedTheme || "system";
    applyTheme(currentTheme);

    // Listen for system theme changes
    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handleChange = () => {
      if (currentTheme === "system") {
        applyTheme("system");
      }
    };
    mediaQuery.addEventListener("change", handleChange);
    return () => mediaQuery.removeEventListener("change", handleChange);
  });
</script>

<DropdownMenu.Root bind:open>
  <DropdownMenu.Trigger asChild let:builder>
    <Button variant="outline" size="icon" builders={[builder]}>
      <Sun
        class="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0"
      />
      <Moon
        class="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100"
      />
      <span class="sr-only">Toggle theme</span>
    </Button>
  </DropdownMenu.Trigger>
  <DropdownMenu.Content align="end">
    <DropdownMenu.Item on:click={() => setTheme("light")}>
      {m.theme_light()}
    </DropdownMenu.Item>
    <DropdownMenu.Item on:click={() => setTheme("dark")}>
      {m.theme_dark()}
    </DropdownMenu.Item>
    <DropdownMenu.Item on:click={() => setTheme("system")}>
      {m.theme_system()}
    </DropdownMenu.Item>
  </DropdownMenu.Content>
</DropdownMenu.Root>



PROMPT: You are an expert code reviewer. Your task is to analyze the provided code files and provide a comprehensive code review. For each file, consider:

1. Code Quality: Assess readability, maintainability, and adherence to best practices
2. Potential Issues: Identify bugs, security vulnerabilities, or performance concerns
3. Suggestions: Provide specific recommendations for improvements

Format your review as follows:
1. Start with a brief overview of all files
2. For each file, provide:
   - A summary of the file's purpose
   - Key findings (both positive and negative)
   - Specific recommendations
3. End with any overall suggestions for the codebase

Your review should be detailed but concise, focusing on the most important aspects of the code.

Files to review:

File: ./src/lib/components/ThemeToggle.svelte
Content:
<script lang="ts">
  import * as m from "$lib/paraglide/messages.js";
  import { onMount } from "svelte";
  import { browser } from "$app/environment";
  import Sun from "$lib/icons/Sun.svelte";
  import Moon from "$lib/icons/Moon.svelte";
  import { Button } from "$lib/components/ui/button";
  import * as DropdownMenu from "$lib/components/ui/dropdown-menu/";

  type Theme = "system" | "light" | "dark";
  let currentTheme: Theme = "system";
  let open = false;

  function setTheme(theme: Theme) {
    currentTheme = theme;
    if (browser) {
      document.cookie = `theme=${theme};path=/;max-age=31536000;`;
      applyTheme(theme);
    }
    open = false;
  }

  function applyTheme(theme: Theme) {
    const isDark =
      theme === "dark" ||
      (theme === "system" &&
        window.matchMedia("(prefers-color-scheme: dark)").matches);

    document.documentElement.classList.remove("light", "dark", "system");
    document.documentElement.classList.add(theme);
    document.documentElement.classList.toggle("dark", isDark);
  }

  function getCookie(name: string): string | null {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop()?.split(";").shift() || null;
    return null;
  }

  onMount(() => {
    const savedTheme = getCookie("theme") as Theme | null;
    currentTheme = savedTheme || "system";
    applyTheme(currentTheme);

    // Listen for system theme changes
    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handleChange = () => {
      if (currentTheme === "system") {
        applyTheme("system");
      }
    };
    mediaQuery.addEventListener("change", handleChange);
    return () => mediaQuery.removeEventListener("change", handleChange);
  });
</script>

<DropdownMenu.Root bind:open>
  <DropdownMenu.Trigger asChild let:builder>
    <Button variant="outline" size="icon" builders={[builder]}>
      <Sun
        class="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0"
      />
      <Moon
        class="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100"
      />
      <span class="sr-only">Toggle theme</span>
    </Button>
  </DropdownMenu.Trigger>
  <DropdownMenu.Content align="end">
    <DropdownMenu.Item on:click={() => setTheme("light")}>
      {m.theme_light()}
    </DropdownMenu.Item>
    <DropdownMenu.Item on:click={() => setTheme("dark")}>
      {m.theme_dark()}
    </DropdownMenu.Item>
    <DropdownMenu.Item on:click={() => setTheme("system")}>
      {m.theme_system()}
    </DropdownMenu.Item>
  </DropdownMenu.Content>
</DropdownMenu.Root>