feat(settings): add option to turn book spine off for comics

Adds a display preference to conditionally render book spines on comic
formats. The new setting is defaulted to false. Various book cover
surfaces across the application now respect this preference by checking
if the format is a comic before rendering the spine.

Closes #295

packages/types/src/book.ts

@@ -12,6 +12,11 @@ export function isAudioFormat(format: string): boolean {
   return AUDIO_FORMATS.has(format.toLowerCase());
 }
 
+const COMIC_FORMATS = new Set<string>(["cbz", "cbr", "cb7", "cbx"]);
+export function isComicFormat(format: string): boolean {
+  return COMIC_FORMATS.has(format.toLowerCase());
+}
+
 export const READ_STATUSES = ["unread", "want_to_read", "reading", "on_hold", "rereading", "read", "skimmed", "abandoned"] as const;
 export type ReadStatus = (typeof READ_STATUSES)[number];
 export type ReadStatusSource = "auto" | "manual";
@@ -217,6 +222,7 @@ export type BookRecommendation = {
   hasCover: boolean;
   authors: string[];
   isAudiobook?: boolean;
+  isComic?: boolean;
 };
 
 export type SeriesBookRecommendation = {
@@ -226,6 +232,7 @@ export type SeriesBookRecommendation = {
   hasCover: boolean;
   authors: string[];
   isAudiobook?: boolean;
+  isComic?: boolean;
 };
 
 export type CoverSearchResult = {

packages/types/src/display-preferences.ts

@@ -49,6 +49,7 @@ export interface DisplayPreferences {
   tableZebraStriping: boolean;
   tableDensity: TableDensity;
   bookSpineOverlay: BookSpineOverlay;
+  showSpineOnComics: boolean;
   bookShadowStrength: BookShadowStrength;
   bookCoverDisplayMode: BookCoverDisplayMode;
   seriesCardCoverMode: SeriesCardCoverMode;