Refactor frontend components and remove FlareSolverr service from Docker setup

- Removed FlareSolverr service from docker-compose.yml and its related environment variables.
- Refactored App.svelte to utilize new components for header, login form, and title management.
- Introduced new components: AppHeader, LoginForm, AddTitleForm, ChapterList, TitleCard, TitleList, JobsStrip, and ErrorBanner for better modularity and maintainability.
- Updated API handling in App.svelte to streamline authentication and title addition processes.
- Enhanced user interface with improved error handling and loading states across components.

web/src/components/TitleList.svelte

@@ -0,0 +1,56 @@
+<script>
+  import TitleCard from "./TitleCard.svelte";
+
+  /**
+   * @typedef {object} Props
+   * @property {any[]} titles
+   * @property {Record<string|number, boolean>} expanded
+   * @property {Record<string|number, boolean>} loadingChapters
+   * @property {Record<string|number, any[]>} chaptersByTitle
+   * @property {boolean} busy
+   * @property {(titleId: number) => void | Promise<void>} onToggleExpand
+   * @property {(titleId: number) => void | Promise<void>} onSync
+   * @property {(title: any) => void | Promise<void>} onToggleEnabled
+   * @property {(titleId: number) => void | Promise<void>} onRemove
+   * @property {(chapterId: number, titleId: number) => void | Promise<void>} onCancelChapter
+   * @property {(chapterId: number, titleId: number) => void | Promise<void>} onRedownload
+   */
+
+  /** @type {Props} */
+  let {
+    titles = [],
+    expanded = {},
+    loadingChapters = {},
+    chaptersByTitle = {},
+    busy = false,
+    onToggleExpand,
+    onSync,
+    onToggleEnabled,
+    onRemove,
+    onCancelChapter,
+    onRedownload,
+  } = $props();
+</script>
+
+<section>
+  <h2>Titles</h2>
+  {#if titles.length === 0}
+    <p class="muted">No titles yet. Add a series URL above.</p>
+  {:else}
+    {#each titles as title (title.id)}
+      <TitleCard
+        {title}
+        expanded={Boolean(expanded[title.id])}
+        loading={Boolean(loadingChapters[title.id])}
+        chapters={chaptersByTitle[title.id] || []}
+        {busy}
+        onToggleExpand={() => onToggleExpand(title.id)}
+        onSync={() => onSync(title.id)}
+        onToggleEnabled={() => onToggleEnabled(title)}
+        onRemove={() => onRemove(title.id)}
+        {onCancelChapter}
+        {onRedownload}
+      />
+    {/each}
+  {/if}
+</section>