Chore: Port over Home & Fix Suwayomi-Server Detection on Web

src/lib/state/home.svelte.ts

@@ -0,0 +1,42 @@
+export interface HistoryEntry {
+  mangaId:       number
+  mangaTitle:    string
+  thumbnailUrl:  string
+  chapterId:     number
+  chapterName:   string
+  chapterNumber: number
+  pageNumber:    number
+  readAt:        number
+}
+
+export interface ReadingStats {
+  currentStreakDays: number
+  totalChaptersRead: number
+  totalMinutesRead:  number
+  totalMangaRead:    number
+  longestStreakDays:  number
+}
+
+export const homeState = $state({
+  history:         [] as HistoryEntry[],
+  dailyReadCounts: {} as Record<string, number>,
+  stats: {
+    currentStreakDays: 0,
+    totalChaptersRead: 0,
+    totalMinutesRead:  0,
+    totalMangaRead:    0,
+    longestStreakDays:  0,
+  } as ReadingStats,
+  heroSlots: [null, null, null, null] as [number | null, number | null, number | null, number | null],
+})
+
+export function setHeroSlot(i: 1 | 2 | 3, mangaId: number | null) {
+  homeState.heroSlots[i] = mangaId
+}
+
+export function recordRead(entry: HistoryEntry) {
+  homeState.history = [entry, ...homeState.history.filter(e => e.chapterId !== entry.chapterId)]
+  const dateStr = new Date(entry.readAt).toISOString().slice(0, 10)
+  homeState.dailyReadCounts[dateStr] = (homeState.dailyReadCounts[dateStr] ?? 0) + 1
+  homeState.stats.totalChaptersRead++
+}