diff --git a/apps/mana/apps/web/src/lib/modules/library/components/ProgressControls.svelte b/apps/mana/apps/web/src/lib/modules/library/components/ProgressControls.svelte
new file mode 100644
index 000000000..7b1cca4eb
--- /dev/null
+++ b/apps/mana/apps/web/src/lib/modules/library/components/ProgressControls.svelte
@@ -0,0 +1,354 @@
+<!--
+  ProgressControls — typ-spezifische Fortschritts-UI.
+  book   → page slider (current / total), mark-as-read button at 100%
+  movie  → no progress (atomic) — renders nothing
+  series → collapsible season/episode checklist
+  comic  → current-issue bumper (±1)
+  Updates land on libraryEntriesStore.updateEntry so the encrypted fields are
+  left alone; only `details` (plaintext) changes here.
+-->
+<script lang="ts">
+	import { libraryEntriesStore } from '../stores/entries.svelte';
+	import type {
+		LibraryEntry,
+		BookDetails,
+		SeriesDetails,
+		ComicDetails,
+		WatchedEpisode,
+	} from '../types';
+
+	let { entry }: { entry: LibraryEntry } = $props();
+
+	// ─── Book: page slider ───────────────────────────────
+
+	async function setCurrentPage(next: number | null) {
+		if (entry.details.kind !== 'book') return;
+		const total = entry.details.pages ?? null;
+		const clamped = next == null ? null : Math.max(0, total ? Math.min(total, next) : next);
+		const patch: BookDetails = { ...entry.details, currentPage: clamped };
+		await libraryEntriesStore.updateEntry(entry.id, { details: patch });
+		if (total && clamped === total && entry.status !== 'completed') {
+			await libraryEntriesStore.setStatus(entry.id, 'completed');
+		}
+	}
+
+	const bookProgressPct = $derived.by(() => {
+		if (entry.details.kind !== 'book') return 0;
+		const { pages, currentPage } = entry.details;
+		if (!pages || !currentPage) return 0;
+		return Math.round((currentPage / pages) * 100);
+	});
+
+	// ─── Series: episode tracker ─────────────────────────
+
+	function isWatched(watched: readonly WatchedEpisode[], season: number, episode: number) {
+		return watched.some((w) => w.season === season && w.episode === episode);
+	}
+
+	async function toggleEpisode(season: number, episode: number) {
+		if (entry.details.kind !== 'series') return;
+		const current = entry.details.watched ?? [];
+		const exists = isWatched(current, season, episode);
+		const next: WatchedEpisode[] = exists
+			? current.filter((w) => !(w.season === season && w.episode === episode))
+			: [...current, { season, episode, watchedAt: new Date().toISOString() }];
+		const patch: SeriesDetails = { ...entry.details, watched: next };
+		await libraryEntriesStore.updateEntry(entry.id, { details: patch });
+
+		if (entry.details.totalEpisodes && next.length === entry.details.totalEpisodes) {
+			if (entry.status !== 'completed') await libraryEntriesStore.setStatus(entry.id, 'completed');
+		}
+	}
+
+	function countWatchedInSeason(watched: readonly WatchedEpisode[], season: number) {
+		return watched.filter((w) => w.season === season).length;
+	}
+
+	const seriesTotals = $derived.by(() => {
+		if (entry.details.kind !== 'series') return { watched: 0, total: 0 };
+		const watched = entry.details.watched?.length ?? 0;
+		const total = entry.details.totalEpisodes ?? 0;
+		return { watched, total };
+	});
+
+	// Default distribution when per-season counts aren't tracked: assume equal
+	// split across totalSeasons. For a more accurate tracker the user can edit
+	// the entry; this keeps the UI usable without demanding per-season data.
+	const seasonList = $derived.by(() => {
+		if (entry.details.kind !== 'series') return [] as { season: number; episodeCount: number }[];
+		const { totalSeasons, totalEpisodes } = entry.details;
+		if (!totalSeasons || totalSeasons < 1) return [];
+		const total = totalEpisodes ?? totalSeasons * 10;
+		const perSeason = Math.max(1, Math.ceil(total / totalSeasons));
+		return Array.from({ length: totalSeasons }, (_, i) => ({
+			season: i + 1,
+			episodeCount: i === totalSeasons - 1 ? total - perSeason * (totalSeasons - 1) : perSeason,
+		}));
+	});
+
+	let openSeason = $state<number | null>(null);
+
+	// ─── Comic: issue bumper ─────────────────────────────
+
+	async function bumpIssue(delta: number) {
+		if (entry.details.kind !== 'comic') return;
+		const cur = entry.details.currentIssue ?? 0;
+		const next = Math.max(0, cur + delta);
+		const total = entry.details.issueCount ?? null;
+		const clamped = total ? Math.min(next, total) : next;
+		const patch: ComicDetails = { ...entry.details, currentIssue: clamped };
+		await libraryEntriesStore.updateEntry(entry.id, { details: patch });
+		if (total && clamped === total && entry.status !== 'completed') {
+			await libraryEntriesStore.setStatus(entry.id, 'completed');
+		}
+	}
+</script>
+
+{#if entry.details.kind === 'book'}
+	<section class="progress book">
+		<div class="row-head">
+			<h3>Lesefortschritt</h3>
+			{#if entry.details.pages}
+				<span class="pct">{bookProgressPct}%</span>
+			{/if}
+		</div>
+		{#if entry.details.pages}
+			<input
+				type="range"
+				min="0"
+				max={entry.details.pages}
+				value={entry.details.currentPage ?? 0}
+				onchange={(e) => setCurrentPage(parseInt((e.target as HTMLInputElement).value))}
+			/>
+			<div class="pages-row">
+				<input
+					type="number"
+					min="0"
+					max={entry.details.pages}
+					value={entry.details.currentPage ?? 0}
+					onchange={(e) => setCurrentPage(parseInt((e.target as HTMLInputElement).value) || 0)}
+				/>
+				<span class="muted">/ {entry.details.pages}</span>
+				<button
+					type="button"
+					class="mark-done"
+					onclick={() =>
+						setCurrentPage(entry.details.kind === 'book' ? (entry.details.pages ?? null) : null)}
+				>
+					Fertig
+				</button>
+			</div>
+		{:else}
+			<p class="muted">Trage die Seitenzahl ein, um den Fortschritt zu tracken.</p>
+		{/if}
+	</section>
+{:else if entry.details.kind === 'series'}
+	<section class="progress series">
+		<div class="row-head">
+			<h3>Episoden-Tracker</h3>
+			<span class="muted">{seriesTotals.watched} / {seriesTotals.total || '?'}</span>
+		</div>
+		{#if seasonList.length === 0}
+			<p class="muted">
+				Trage Staffeln + Episoden in den Details ein, um die einzelnen Folgen abzuhaken.
+			</p>
+		{:else}
+			<div class="seasons">
+				{#each seasonList as s (s.season)}
+					{@const watched = entry.details.kind === 'series' ? (entry.details.watched ?? []) : []}
+					{@const seasonWatched = countWatchedInSeason(watched, s.season)}
+					<details
+						open={openSeason === s.season}
+						ontoggle={(e) => {
+							const target = e.currentTarget as HTMLDetailsElement;
+							if (target.open) openSeason = s.season;
+							else if (openSeason === s.season) openSeason = null;
+						}}
+					>
+						<summary>
+							<span>Staffel {s.season}</span>
+							<span class="season-count">{seasonWatched} / {s.episodeCount}</span>
+						</summary>
+						<div class="episode-grid">
+							{#each Array.from({ length: s.episodeCount }, (_, i) => i + 1) as ep (ep)}
+								<button
+									type="button"
+									class="episode"
+									class:watched={isWatched(watched, s.season, ep)}
+									onclick={() => toggleEpisode(s.season, ep)}
+									aria-label={`Staffel ${s.season} Episode ${ep}`}
+								>
+									{ep}
+								</button>
+							{/each}
+						</div>
+					</details>
+				{/each}
+			</div>
+		{/if}
+	</section>
+{:else if entry.details.kind === 'comic'}
+	<section class="progress comic">
+		<div class="row-head">
+			<h3>Ausgaben-Fortschritt</h3>
+			<span class="muted">
+				{entry.details.currentIssue ?? 0}
+				{#if entry.details.issueCount}/ {entry.details.issueCount}{/if}
+			</span>
+		</div>
+		<div class="bumper">
+			<button
+				type="button"
+				onclick={() => bumpIssue(-1)}
+				disabled={(entry.details.currentIssue ?? 0) <= 0}
+				aria-label="Ausgabe zurück"
+			>
+				−
+			</button>
+			<span class="big-num">#{entry.details.currentIssue ?? 0}</span>
+			<button
+				type="button"
+				onclick={() => bumpIssue(1)}
+				disabled={!!entry.details.issueCount &&
+					(entry.details.currentIssue ?? 0) >= entry.details.issueCount}
+				aria-label="Ausgabe weiter"
+			>
+				+
+			</button>
+		</div>
+	</section>
+{/if}
+
+<style>
+	.progress {
+		padding: 0.9rem 1rem;
+		background: var(--color-surface, rgba(0, 0, 0, 0.03));
+		border-radius: 0.6rem;
+		margin-top: 1rem;
+	}
+	.row-head {
+		display: flex;
+		align-items: baseline;
+		justify-content: space-between;
+		margin-bottom: 0.6rem;
+	}
+	.row-head h3 {
+		margin: 0;
+		font-size: 0.95rem;
+	}
+	.muted {
+		color: var(--color-text-muted, #64748b);
+		font-size: 0.85rem;
+	}
+	.pct {
+		color: #a855f7;
+		font-weight: 500;
+		font-size: 0.9rem;
+	}
+	input[type='range'] {
+		width: 100%;
+		accent-color: #a855f7;
+	}
+	.pages-row {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+		margin-top: 0.5rem;
+	}
+	.pages-row input[type='number'] {
+		width: 90px;
+		padding: 0.3rem 0.5rem;
+		border-radius: 0.35rem;
+		border: 1px solid var(--color-border, rgba(0, 0, 0, 0.1));
+		background: var(--color-background, white);
+		color: inherit;
+		font: inherit;
+	}
+	.mark-done {
+		margin-left: auto;
+		padding: 0.3rem 0.75rem;
+		border-radius: 0.4rem;
+		border: 1px solid #a855f7;
+		background: transparent;
+		color: #a855f7;
+		cursor: pointer;
+		font: inherit;
+		font-size: 0.8rem;
+	}
+	.mark-done:hover {
+		background: color-mix(in srgb, #a855f7 10%, transparent);
+	}
+	.seasons {
+		display: flex;
+		flex-direction: column;
+		gap: 0.35rem;
+	}
+	.seasons details {
+		border: 1px solid var(--color-border, rgba(0, 0, 0, 0.08));
+		border-radius: 0.45rem;
+		padding: 0.4rem 0.7rem;
+	}
+	.seasons summary {
+		cursor: pointer;
+		display: flex;
+		justify-content: space-between;
+		gap: 0.5rem;
+		font-size: 0.88rem;
+	}
+	.season-count {
+		color: var(--color-text-muted, #64748b);
+		font-size: 0.78rem;
+	}
+	.episode-grid {
+		display: grid;
+		grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
+		gap: 0.3rem;
+		margin-top: 0.6rem;
+	}
+	.episode {
+		padding: 0.3rem 0;
+		border-radius: 0.35rem;
+		border: 1px solid var(--color-border, rgba(0, 0, 0, 0.1));
+		background: transparent;
+		cursor: pointer;
+		font: inherit;
+		font-size: 0.78rem;
+		color: var(--color-text-muted, #64748b);
+	}
+	.episode.watched {
+		background: color-mix(in srgb, #a855f7 20%, transparent);
+		border-color: #a855f7;
+		color: #a855f7;
+		font-weight: 500;
+	}
+	.bumper {
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		gap: 1rem;
+	}
+	.bumper button {
+		width: 2.2rem;
+		height: 2.2rem;
+		border-radius: 50%;
+		border: 1px solid var(--color-border, rgba(0, 0, 0, 0.1));
+		background: transparent;
+		cursor: pointer;
+		font-size: 1.2rem;
+		color: inherit;
+	}
+	.bumper button:disabled {
+		opacity: 0.4;
+		cursor: not-allowed;
+	}
+	.bumper button:not(:disabled):hover {
+		border-color: #a855f7;
+		color: #a855f7;
+	}
+	.big-num {
+		font-size: 1.5rem;
+		font-weight: 600;
+		min-width: 3rem;
+		text-align: center;
+	}
+</style>
diff --git a/apps/mana/apps/web/src/lib/modules/library/stores/entries.svelte.ts b/apps/mana/apps/web/src/lib/modules/library/stores/entries.svelte.ts
index 0463cb415..d680458fb 100644
--- a/apps/mana/apps/web/src/lib/modules/library/stores/entries.svelte.ts
+++ b/apps/mana/apps/web/src/lib/modules/library/stores/entries.svelte.ts
@@ -145,6 +145,26 @@ export const libraryEntriesStore = {
 		}
 	},
 
+	/**
+	 * "Nochmal" — re-start a completed entry. Leaves `times` alone (it was
+	 * already incremented when the entry was marked complete); resets
+	 * `startedAt` to today, clears `completedAt`, flips status back to
+	 * 'active'. For series, the per-episode watched list is preserved so
+	 * the user has a record of the previous run-through (and can reset
+	 * individual episodes via the tracker if they want).
+	 */
+	async restartEntry(id: string) {
+		const existing = await libraryEntryTable.get(id);
+		if (!existing) return;
+		const nowDate = new Date().toISOString().slice(0, 10);
+		await libraryEntryTable.update(id, {
+			status: 'active',
+			startedAt: nowDate,
+			completedAt: null,
+			updatedAt: new Date().toISOString(),
+		});
+	},
+
 	async rate(id: string, rating: number | null) {
 		await libraryEntryTable.update(id, {
 			rating,
diff --git a/apps/mana/apps/web/src/lib/modules/library/views/DetailView.svelte b/apps/mana/apps/web/src/lib/modules/library/views/DetailView.svelte
index 266083201..dfa11ec0d 100644
--- a/apps/mana/apps/web/src/lib/modules/library/views/DetailView.svelte
+++ b/apps/mana/apps/web/src/lib/modules/library/views/DetailView.svelte
@@ -1,9 +1,9 @@
 <script lang="ts">
 	import { goto } from '$app/navigation';
 	import CoverImage from '../components/CoverImage.svelte';
-	import StatusBadge from '../components/StatusBadge.svelte';
 	import RatingStars from '../components/RatingStars.svelte';
 	import EntryForm from '../components/EntryForm.svelte';
+	import ProgressControls from '../components/ProgressControls.svelte';
 	import { KIND_LABELS, STATUS_LABELS, BOOK_FORMAT_LABELS } from '../constants';
 	import { libraryEntriesStore } from '../stores/entries.svelte';
 	import type { LibraryEntry, LibraryStatus } from '../types';
@@ -31,6 +31,20 @@
 		await libraryEntriesStore.deleteEntry(entry.id);
 		goto('/library');
 	}
+
+	async function onRestart() {
+		await libraryEntriesStore.restartEntry(entry.id);
+	}
+
+	const restartLabel = $derived.by(() => {
+		switch (entry.kind) {
+			case 'book':
+			case 'comic':
+				return 'Nochmal lesen';
+			default:
+				return 'Nochmal sehen';
+		}
+	});
 </script>
 
 <div class="detail">
@@ -91,10 +105,20 @@
 					{/each}
 				</div>
 
-				{#if entry.times > 0}
-					<p class="times">
-						{entry.kind === 'book' || entry.kind === 'comic' ? 'Gelesen' : 'Gesehen'}: {entry.times}×
-					</p>
+				{#if entry.times > 0 || entry.status === 'completed'}
+					<div class="times-row">
+						{#if entry.times > 0}
+							<span class="times">
+								{entry.kind === 'book' || entry.kind === 'comic' ? 'Gelesen' : 'Gesehen'}:
+								{entry.times}×
+							</span>
+						{/if}
+						{#if entry.status === 'completed'}
+							<button type="button" class="restart" onclick={onRestart}>
+								↻ {restartLabel}
+							</button>
+						{/if}
+					</div>
 				{/if}
 
 				{#if entry.genres.length > 0 || entry.tags.length > 0}
@@ -168,6 +192,8 @@
 					{/if}
 				</dl>
 
+				<ProgressControls {entry} />
+
 				{#if entry.review}
 					<section class="review">
 						<h2>Review</h2>
@@ -296,10 +322,29 @@
 		color: #a855f7;
 		border-color: #a855f7;
 	}
+	.times-row {
+		display: flex;
+		align-items: center;
+		gap: 0.75rem;
+		margin-top: 0.2rem;
+	}
 	.times {
 		font-size: 0.85rem;
 		color: var(--color-text-muted, #64748b);
 	}
+	.restart {
+		padding: 0.3rem 0.75rem;
+		border-radius: 0.4rem;
+		border: 1px solid #a855f7;
+		background: transparent;
+		color: #a855f7;
+		cursor: pointer;
+		font: inherit;
+		font-size: 0.8rem;
+	}
+	.restart:hover {
+		background: color-mix(in srgb, #a855f7 10%, transparent);
+	}
 	.tag-row {
 		display: flex;
 		gap: 0.3rem;
diff --git a/docs/plans/library-module.md b/docs/plans/library-module.md
index 22bd684b1..f7597e296 100644
--- a/docs/plans/library-module.md
+++ b/docs/plans/library-module.md
@@ -2,10 +2,13 @@
 
 ## Status (2026-04-17)
 
-**M1 Skelett: DONE.** Modul registriert, Dexie v26 angelegt, Encryption-Registry
-eingetragen, Route `/library` mountet einen minimalen Listen-View. Guest-Seed mit
-je einem Eintrag pro `kind` (Dune, Arrival, Severance, Saga) vorhanden.
-Nächster Schritt: M2 (volles CRUD + Form + Grid + DetailView).
+**M1 Skelett: DONE** (commit 8c6502d0f) — Modul registriert, Dexie v26, Encryption-Registry, Route mountet, Guest-Seed (Dune, Arrival, Severance, Saga).
+
+**M2 CRUD / Grid / Detail: DONE** (commit 364178496) — KindTabs, StatusFilter, RatingStars, EntryCard, EntryForm (Create + Edit, typ-spezifische Details-Accordion), GridView, DetailView, `/library/entry/[id]`-Route.
+
+**M3 Fortschritt: DONE** — `ProgressControls.svelte`: Seiten-Slider für Bücher (auto-completes bei 100%), Episode-Tracker für Serien (abhakbare Folgen pro Staffel), Issue-Bumper für Comics. `libraryEntriesStore.restartEntry` + "Nochmal"-Button im DetailView für abgeschlossene Einträge.
+
+Nächster Schritt: M4 (Cover-Upload via `uload`) oder M6 (AI-Tools).
 
 Vor M2 entschieden:
 - Audiobooks: `kind='book'` mit `details.format='audio'` (nicht eigener `kind`).
@@ -212,8 +215,8 @@ Missionen wie *"Trage meine letzten 5 gesehenen Filme ein"* können dann über d
 ## Reihenfolge (Milestones)
 
 1. **M1 — Skelett [DONE 2026-04-17]**: types, collections, module.config, Registry-Eintrag, Dexie-Migration (v26), leere Route. *Ziel: App zeigt leeres Modul an, nichts crasht.*
-2. **M2 — CRUD**: entries-Store, EntryForm, GridView, DetailView. Manuelles Anlegen/Editieren funktioniert für alle 4 `kind`s. Cover via URL.
-3. **M3 — Fortschritt**: Status-Wechsel, Rating, times-Counter, Episode-Tracker für Serien, Seiten-Slider für Bücher. Guest-Seed komplett.
+2. **M2 — CRUD [DONE 2026-04-17]**: entries-Store, EntryForm, GridView, DetailView. Manuelles Anlegen/Editieren funktioniert für alle 4 `kind`s. Cover via URL.
+3. **M3 — Fortschritt [DONE 2026-04-17]**: Status-Wechsel, Rating, times-Counter, Episode-Tracker für Serien, Seiten-Slider für Bücher, Issue-Bumper für Comics, Nochmal-Button.
 4. **M4 — Cover-Upload**: Integration mit `uload`. Encryption-Registry final.
 5. **M5 — Stats + Dashboard-Widget**: useStats, kleiner Widget für Dashboard.
 6. **M6 — AI-Tools**: list/create/complete/rate Tools, Shared-AI-Policy.