diff --git a/src/lib/client/ui/table/ExpandableTable.svelte b/src/lib/client/ui/table/ExpandableTable.svelte
new file mode 100644
index 0000000..927f27a
--- /dev/null
+++ b/src/lib/client/ui/table/ExpandableTable.svelte
@@ -0,0 +1,111 @@
+<script lang="ts" generics="T extends Record<string, any>">
+	import { ChevronDown, ChevronUp } from 'lucide-svelte';
+	import type { Column } from './types';
+
+	export let columns: Column<T>[];
+	export let data: T[];
+	export let getRowId: (row: T) => string | number;
+	export let compact: boolean = false;
+	export let emptyMessage: string = 'No data available';
+
+	let expandedRows: Set<string | number> = new Set();
+
+	function toggleRow(id: string | number) {
+		if (expandedRows.has(id)) {
+			expandedRows.delete(id);
+		} else {
+			expandedRows.add(id);
+		}
+		expandedRows = expandedRows;
+	}
+
+	function getAlignClass(align?: 'left' | 'center' | 'right'): string {
+		switch (align) {
+			case 'center':
+				return 'text-center';
+			case 'right':
+				return 'text-right';
+			default:
+				return 'text-left';
+		}
+	}
+
+	function getCellValue(row: T, key: string): unknown {
+		return key.split('.').reduce((obj, k) => obj?.[k], row as Record<string, unknown>);
+	}
+</script>
+
+<div class="overflow-x-auto rounded-lg border border-neutral-200 dark:border-neutral-800">
+	<table class="w-full">
+		<thead class="border-b border-neutral-200 bg-neutral-50 dark:border-neutral-800 dark:bg-neutral-800">
+			<tr>
+				<!-- Expand column -->
+				<th class="{compact ? 'px-2 py-2' : 'px-3 py-3'} w-8"></th>
+				{#each columns as column}
+					<th
+						class="{compact ? 'px-4 py-2' : 'px-6 py-3'} text-xs font-medium uppercase tracking-wider text-neutral-700 dark:text-neutral-300 {getAlignClass(column.align)} {column.width || ''}"
+					>
+						{column.header}
+					</th>
+				{/each}
+			</tr>
+		</thead>
+		<tbody class="divide-y divide-neutral-200 bg-white dark:divide-neutral-800 dark:bg-neutral-900">
+			{#if data.length === 0}
+				<tr>
+					<td
+						colspan={columns.length + 1}
+						class="px-6 py-8 text-center text-sm text-neutral-500 dark:text-neutral-400"
+					>
+						{emptyMessage}
+					</td>
+				</tr>
+			{:else}
+				{#each data as row}
+					{@const rowId = getRowId(row)}
+
+					<!-- Main Row -->
+					<tr
+						class="cursor-pointer transition-colors hover:bg-neutral-50 dark:hover:bg-neutral-800/50"
+						on:click={() => toggleRow(rowId)}
+					>
+						<!-- Expand Icon -->
+						<td class="{compact ? 'px-2 py-2' : 'px-3 py-3'} text-neutral-400">
+							{#if expandedRows.has(rowId)}
+								<ChevronUp size={16} />
+							{:else}
+								<ChevronDown size={16} />
+							{/if}
+						</td>
+
+						{#each columns as column}
+							<td
+								class="{compact ? 'px-4 py-2' : 'px-6 py-4'} text-sm text-neutral-900 dark:text-neutral-100 {getAlignClass(column.align)} {column.width || ''}"
+							>
+								<slot name="cell" {row} {column} expanded={expandedRows.has(rowId)}>
+									{getCellValue(row, column.key)}
+								</slot>
+							</td>
+						{/each}
+					</tr>
+
+					<!-- Expanded Row -->
+					{#if expandedRows.has(rowId)}
+						<tr class="bg-neutral-50 dark:bg-neutral-800/30">
+							<td colspan={columns.length + 1} class="{compact ? 'px-4 py-3' : 'px-6 py-4'}">
+								<div class="ml-6">
+									<slot name="expanded" {row}>
+										<!-- Default expanded content -->
+										<div class="text-sm text-neutral-500 dark:text-neutral-400">
+											No additional details
+										</div>
+									</slot>
+								</div>
+							</td>
+						</tr>
+					{/if}
+				{/each}
+			{/if}
+		</tbody>
+	</table>
+</div>
diff --git a/src/lib/client/ui/table/Table.svelte b/src/lib/client/ui/table/Table.svelte
index 62a7a1e..5e2cf72 100644
--- a/src/lib/client/ui/table/Table.svelte
+++ b/src/lib/client/ui/table/Table.svelte
@@ -108,7 +108,7 @@
 	$: sortedData = sortData(data);
 </script>
 
-<div class="overflow-x-auto rounded-lg border-2 border-neutral-200 dark:border-neutral-800">
+<div class="overflow-x-auto rounded-lg border border-neutral-200 dark:border-neutral-800">
 	<table class="w-full">
 		<!-- Header -->
 		<thead
diff --git a/src/lib/server/cache/cache.ts b/src/lib/server/cache/cache.ts
new file mode 100644
index 0000000..dab9d51
--- /dev/null
+++ b/src/lib/server/cache/cache.ts
@@ -0,0 +1,67 @@
+/**
+ * Simple in-memory cache with TTL
+ */
+
+interface CacheEntry<T> {
+	data: T;
+	expiresAt: number;
+}
+
+class Cache {
+	private store = new Map<string, CacheEntry<unknown>>();
+
+	/**
+	 * Get a cached value
+	 */
+	get<T>(key: string): T | undefined {
+		const entry = this.store.get(key) as CacheEntry<T> | undefined;
+		if (!entry) return undefined;
+
+		if (Date.now() > entry.expiresAt) {
+			this.store.delete(key);
+			return undefined;
+		}
+
+		return entry.data;
+	}
+
+	/**
+	 * Set a cached value with TTL in seconds
+	 */
+	set<T>(key: string, data: T, ttlSeconds: number): void {
+		this.store.set(key, {
+			data,
+			expiresAt: Date.now() + ttlSeconds * 1000
+		});
+	}
+
+	/**
+	 * Delete a cached value
+	 */
+	delete(key: string): boolean {
+		return this.store.delete(key);
+	}
+
+	/**
+	 * Delete all cached values matching a prefix
+	 */
+	deleteByPrefix(prefix: string): number {
+		let count = 0;
+		for (const key of this.store.keys()) {
+			if (key.startsWith(prefix)) {
+				this.store.delete(key);
+				count++;
+			}
+		}
+		return count;
+	}
+
+	/**
+	 * Clear all cached values
+	 */
+	clear(): void {
+		this.store.clear();
+	}
+}
+
+export const cache = new Cache();
diff --git a/src/lib/server/pcd/queries/qualityProfiles/index.ts b/src/lib/server/pcd/queries/qualityProfiles/index.ts
index ba26723..f318635 100644
--- a/src/lib/server/pcd/queries/qualityProfiles/index.ts
+++ b/src/lib/server/pcd/queries/qualityProfiles/index.ts
@@ -25,6 +25,7 @@ export type {
 
 // Export query functions
 export { list } from './list.ts';
+export { names } from './names.ts';
 export { general } from './general.ts';
 export { languages } from './languages.ts';
 export { qualities } from './qualities.ts';
diff --git a/src/lib/server/pcd/queries/qualityProfiles/names.ts b/src/lib/server/pcd/queries/qualityProfiles/names.ts
new file mode 100644
index 0000000..2891b54
--- /dev/null
+++ b/src/lib/server/pcd/queries/qualityProfiles/names.ts
@@ -0,0 +1,20 @@
+/**
+ * Quality profile name queries
+ */
+
+import type { PCDCache } from '../../cache.ts';
+
+/**
+ * Get all quality profile names from a cache
+ */
+export async function names(cache: PCDCache): Promise<string[]> {
+	const db = cache.kb;
+
+	const profiles = await db
+		.selectFrom('quality_profiles')
+		.select(['name'])
+		.orderBy('name')
+		.execute();
+
+	return profiles.map((p) => p.name);
+}
diff --git a/src/lib/server/utils/arr/clients/lidarr.ts b/src/lib/server/utils/arr/clients/lidarr.ts
index 3f6bc7a..f25d189 100644
--- a/src/lib/server/utils/arr/clients/lidarr.ts
+++ b/src/lib/server/utils/arr/clients/lidarr.ts
@@ -6,7 +6,7 @@ import { BaseArrClient } from '../base.ts';
  * Note: Lidarr uses API v1, not v3 like other *arr apps
  */
 export class LidarrClient extends BaseArrClient {
-	protected apiVersion: string = 'v1'; // Lidarr uses v1 API
+	protected override apiVersion: string = 'v1'; // Lidarr uses v1 API
 
 	// Specific API methods will be implemented here as needed
 }
diff --git a/src/lib/server/utils/arr/clients/radarr.ts b/src/lib/server/utils/arr/clients/radarr.ts
index 41c2b7c..f123f25 100644
--- a/src/lib/server/utils/arr/clients/radarr.ts
+++ b/src/lib/server/utils/arr/clients/radarr.ts
@@ -1,9 +1,125 @@
 import { BaseArrClient } from '../base.ts';
+import type {
+	RadarrMovie,
+	RadarrMovieFile,
+	RadarrQualityProfile,
+	RadarrLibraryItem,
+	ScoreBreakdownItem,
+	CustomFormatRef,
+	QualityProfileFormatItem
+} from '../types.ts';
 
 /**
  * Radarr API client
  * Extends BaseArrClient with Radarr-specific API methods
  */
 export class RadarrClient extends BaseArrClient {
-	// Specific API methods will be implemented here as needed
+	/**
+	 * Get all movies
+	 */
+	getMovies(): Promise<RadarrMovie[]> {
+		return this.get<RadarrMovie[]>(`/api/${this.apiVersion}/movie`);
+	}
+
+	/**
+	 * Get all quality profiles
+	 */
+	getQualityProfiles(): Promise<RadarrQualityProfile[]> {
+		return this.get<RadarrQualityProfile[]>(`/api/${this.apiVersion}/qualityprofile`);
+	}
+
+	/**
+	 * Get movie files by movie IDs
+	 * Uses movieId params for batching (NOT movieFileIds which can error on stale IDs)
+	 */
+	getMovieFiles(movieIds: number[]): Promise<RadarrMovieFile[]> {
+		if (movieIds.length === 0) {
+			return Promise.resolve([]);
+		}
+
+		// Build query string with repeated movieId params
+		const queryString = movieIds.map((id) => `movieId=${id}`).join('&');
+		return this.get<RadarrMovieFile[]>(`/api/${this.apiVersion}/moviefile?${queryString}`);
+	}
+
+	/**
+	 * Compute score breakdown for a movie's custom formats against a profile's format items
+	 */
+	private computeScoreBreakdown(
+		movieCustomFormats: CustomFormatRef[],
+		profileFormatItems: QualityProfileFormatItem[]
+	): ScoreBreakdownItem[] {
+		return movieCustomFormats.map((cf) => {
+			const profileItem = profileFormatItems.find((fi) => fi.format === cf.id);
+			return {
+				name: cf.name,
+				score: profileItem?.score ?? 0
+			};
+		});
+	}
+
+	/**
+	 * Fetch and compute library data with all joined information
+	 * Makes 3 API calls: movies, quality profiles, and movie files (batched)
+	 * @param profilarrProfileNames - Set of profile names from Profilarr databases
+	 */
+	async getLibrary(profilarrProfileNames?: Set<string>): Promise<RadarrLibraryItem[]> {
+		// Fetch movies and profiles in parallel
+		const [movies, profiles] = await Promise.all([this.getMovies(), this.getQualityProfiles()]);
+
+		// Create profile lookup map
+		const profileMap = new Map(profiles.map((p) => [p.id, p]));
+
+		// Get movie IDs that have files
+		const movieIdsWithFiles = movies.filter((m) => m.hasFile).map((m) => m.id);
+
+		// Fetch movie files in batch
+		const movieFiles = await this.getMovieFiles(movieIdsWithFiles);
+
+		// Create movie file lookup by movieId
+		const movieFileMap = new Map(movieFiles.map((mf) => [mf.movieId, mf]));
+
+		// Build library items
+		const libraryItems: RadarrLibraryItem[] = movies.map((movie) => {
+			const profile = profileMap.get(movie.qualityProfileId);
+			const movieFile = movieFileMap.get(movie.id);
+
+			const customFormats = movieFile?.customFormats ?? [];
+			const customFormatScore = movieFile?.customFormatScore ?? 0;
+			const cutoffScore = profile?.cutoffFormatScore ?? 0;
+			const minScore = profile?.minFormatScore ?? 0;
+
+			// Compute score breakdown
+			const scoreBreakdown = profile
+				? this.computeScoreBreakdown(customFormats, profile.formatItems)
+				: [];
+
+			// Calculate progress (0 to 1+, where 1 = cutoff met)
+			const progress = cutoffScore > 0 ? customFormatScore / cutoffScore : 0;
+
+			const profileName = profile?.name ?? 'Unknown';
+
+			return {
+				id: movie.id,
+				tmdbId: movie.tmdbId,
+				title: movie.title,
+				year: movie.year,
+				qualityProfileId: movie.qualityProfileId,
+				qualityProfileName: profileName,
+				hasFile: movie.hasFile,
+				customFormats,
+				customFormatScore,
+				qualityName: movieFile?.quality?.quality?.name,
+				fileName: movieFile?.relativePath?.split('/').pop(),
+				scoreBreakdown,
+				cutoffScore,
+				minScore,
+				progress,
+				cutoffMet: customFormatScore >= cutoffScore,
+				isProfilarrProfile: profilarrProfileNames?.has(profileName) ?? false
+			};
+		});
+
+		return libraryItems;
+	}
 }
diff --git a/src/lib/server/utils/arr/types.ts b/src/lib/server/utils/arr/types.ts
index 85c78db..702e415 100644
--- a/src/lib/server/utils/arr/types.ts
+++ b/src/lib/server/utils/arr/types.ts
@@ -4,6 +4,159 @@
 
 export type ArrType = 'radarr' | 'sonarr' | 'lidarr' | 'chaptarr';
 
+// =============================================================================
+// Radarr Types
+// =============================================================================
+
+/**
+ * Movie from /api/v3/movie
+ */
+export interface RadarrMovie {
+	id: number;
+	title: string;
+	originalTitle?: string;
+	sortTitle?: string;
+	year?: number;
+	qualityProfileId: number;
+	hasFile: boolean;
+	movieFileId?: number;
+	monitored?: boolean;
+	minimumAvailability?: string;
+	runtime?: number;
+	tmdbId?: number;
+	imdbId?: string;
+	added?: string;
+	ratings?: {
+		imdb?: { votes: number; value: number };
+		tmdb?: { votes: number; value: number };
+	};
+	genres?: string[];
+	overview?: string;
+	images?: { coverType: string; url: string; remoteUrl?: string }[];
+	path?: string;
+	studio?: string;
+	rootFolderPath?: string;
+	sizeOnDisk?: number;
+	status?: string;
+}
+
+/**
+ * Custom format reference (minimal, as returned in movie file)
+ */
+export interface CustomFormatRef {
+	id: number;
+	name: string;
+}
+
+/**
+ * Movie file from /api/v3/moviefile
+ */
+export interface RadarrMovieFile {
+	id: number;
+	movieId: number;
+	relativePath?: string;
+	path?: string;
+	size?: number;
+	dateAdded?: string;
+	quality?: {
+		quality: { id: number; name: string; source?: string; resolution?: number };
+		revision?: { version: number; real: number; isRepack?: boolean };
+	};
+	customFormats: CustomFormatRef[];
+	customFormatScore: number;
+	mediaInfo?: {
+		audioBitrate?: number;
+		audioChannels?: number;
+		audioCodec?: string;
+		audioLanguages?: string;
+		audioStreamCount?: number;
+		videoBitDepth?: number;
+		videoBitrate?: number;
+		videoCodec?: string;
+		videoFps?: number;
+		videoDynamicRange?: string;
+		videoDynamicRangeType?: string;
+		resolution?: string;
+		runTime?: string;
+		scanType?: string;
+		subtitles?: string;
+	};
+	originalFilePath?: string;
+	sceneName?: string;
+	releaseGroup?: string;
+	edition?: string;
+	languages?: { id: number; name: string }[];
+}
+
+/**
+ * Format item within a quality profile
+ */
+export interface QualityProfileFormatItem {
+	format: number;
+	name: string;
+	score: number;
+}
+
+/**
+ * Quality profile from /api/v3/qualityprofile
+ */
+export interface RadarrQualityProfile {
+	id: number;
+	name: string;
+	upgradeAllowed?: boolean;
+	cutoff?: number;
+	cutoffFormatScore: number;
+	minFormatScore: number;
+	formatItems: QualityProfileFormatItem[];
+	items?: {
+		id?: number;
+		name?: string;
+		quality?: { id: number; name: string; source?: string; resolution?: number };
+		items?: unknown[];
+		allowed?: boolean;
+	}[];
+}
+
+// =============================================================================
+// Library View Types (computed/joined data)
+// =============================================================================
+
+/**
+ * Score breakdown showing how each custom format contributes to the total score
+ */
+export interface ScoreBreakdownItem {
+	name: string;
+	score: number;
+}
+
+/**
+ * Library item with all computed fields for the UI
+ */
+export interface RadarrLibraryItem {
+	// From /movie
+	id: number;
+	tmdbId?: number;
+	title: string;
+	year?: number;
+	qualityProfileId: number;
+	qualityProfileName: string;
+	hasFile: boolean;
+
+	// From /moviefile (only if hasFile)
+	customFormats: CustomFormatRef[];
+	customFormatScore: number;
+	qualityName?: string;
+	fileName?: string;
+
+	// Computed
+	scoreBreakdown: ScoreBreakdownItem[];
+	cutoffScore: number;
+	minScore: number;
+	progress: number; // customFormatScore / cutoffFormatScore (0-1, can exceed 1)
+	cutoffMet: boolean;
+	isProfilarrProfile: boolean; // true if profile name matches a Profilarr database profile
+}
+
 /**
  * System status response from /api/v3/system/status
  * Based on actual Radarr API response
diff --git a/src/routes/arr/[id]/+layout.svelte b/src/routes/arr/[id]/+layout.svelte
index 210b255..b8ddc79 100644
--- a/src/routes/arr/[id]/+layout.svelte
+++ b/src/routes/arr/[id]/+layout.svelte
@@ -1,7 +1,7 @@
 <script lang="ts">
 	import Tabs from '$ui/navigation/tabs/Tabs.svelte';
 	import { page } from '$app/stores';
-	import { Library, ArrowUpDown, ScrollText } from 'lucide-svelte';
+	import { Library, ArrowUpCircle, ScrollText } from 'lucide-svelte';
 
 	$: instanceId = $page.params.id;
 	$: currentPath = $page.url.pathname;
@@ -14,10 +14,10 @@
 			icon: Library
 		},
 		{
-			label: 'Search Priority',
+			label: 'Upgrades',
 			href: `/arr/${instanceId}/search-priority`,
 			active: currentPath.includes('/search-priority'),
-			icon: ArrowUpDown
+			icon: ArrowUpCircle
 		},
 		{
 			label: 'Logs',
diff --git a/src/routes/arr/[id]/library/+page.server.ts b/src/routes/arr/[id]/library/+page.server.ts
index 8c8ae41..75ceae6 100644
--- a/src/routes/arr/[id]/library/+page.server.ts
+++ b/src/routes/arr/[id]/library/+page.server.ts
@@ -1,8 +1,40 @@
-import { error } from '@sveltejs/kit';
-import type { ServerLoad } from '@sveltejs/kit';
+import { error, redirect } from '@sveltejs/kit';
+import type { ServerLoad, Actions } from '@sveltejs/kit';
 import { arrInstancesQueries } from '$db/queries/arrInstances.ts';
+import { pcdManager } from '$pcd/pcd.ts';
+import * as qualityProfileQueries from '$pcd/queries/qualityProfiles/index.ts';
+import { cache } from '$cache/cache.ts';
+import { RadarrClient } from '$utils/arr/clients/radarr.ts';
+import type { RadarrLibraryItem } from '$utils/arr/types.ts';
+import { logger } from '$logger/logger.ts';
 
-export const load: ServerLoad = ({ params }) => {
+const LIBRARY_CACHE_TTL = 300; // 5 minutes
+
+/**
+ * Get all quality profile names from all enabled Profilarr databases
+ */
+async function getProfilarrProfileNames(): Promise<Set<string>> {
+	const profileNames = new Set<string>();
+	const databases = pcdManager.getAll().filter((db) => db.enabled);
+
+	for (const db of databases) {
+		const cache = pcdManager.getCache(db.id);
+		if (!cache?.isBuilt()) continue;
+
+		try {
+			const names = await qualityProfileQueries.names(cache);
+			for (const name of names) {
+				profileNames.add(name);
+			}
+		} catch {
+			// Cache query failed, skip this database
+		}
+	}
+
+	return profileNames;
+}
+
+export const load: ServerLoad = async ({ params }) => {
 	const id = parseInt(params.id || '', 10);
 
 	if (isNaN(id)) {
@@ -15,7 +47,83 @@ export const load: ServerLoad = ({ params }) => {
 		error(404, `Instance not found: ${id}`);
 	}
 
+	// Only fetch library for Radarr for now
+	let library: RadarrLibraryItem[] = [];
+	let libraryError: string | null = null;
+
+	if (instance.type === 'radarr') {
+		const cacheKey = `library:${id}`;
+
+		// Try to get from cache first
+		const cached = cache.get<RadarrLibraryItem[]>(cacheKey);
+		if (cached) {
+			library = cached;
+		} else {
+			try {
+				const profilarrProfileNames = await getProfilarrProfileNames();
+				const client = new RadarrClient(instance.url, instance.api_key);
+				library = await client.getLibrary(profilarrProfileNames);
+
+				// Cache the result
+				cache.set(cacheKey, library, LIBRARY_CACHE_TTL);
+
+				await logger.info(`Fetched library for ${instance.name}`, {
+					source: 'arr/library',
+					meta: { instanceId: id, movieCount: library.length }
+				});
+			} catch (err) {
+				libraryError = err instanceof Error ? err.message : 'Failed to fetch library';
+
+				await logger.error(`Failed to fetch library for ${instance.name}`, {
+					source: 'arr/library',
+					meta: { instanceId: id, error: libraryError }
+				});
+			}
+		}
+	}
+
+	// Get profiles from all databases for the "Change Profile" action
+	const profilesByDatabase: { databaseId: number; databaseName: string; profiles: string[] }[] = [];
+	const databases = pcdManager.getAll().filter((db) => db.enabled);
+
+	for (const db of databases) {
+		const cache = pcdManager.getCache(db.id);
+		if (!cache?.isBuilt()) continue;
+
+		try {
+			const names = await qualityProfileQueries.names(cache);
+			profilesByDatabase.push({
+				databaseId: db.id,
+				databaseName: db.name,
+				profiles: names
+			});
+		} catch {
+			// Skip if cache query fails
+		}
+	}
+
 	return {
-		instance
+		instance,
+		library,
+		libraryError,
+		profilesByDatabase
 	};
 };
+
+export const actions: Actions = {
+	refresh: async ({ params }) => {
+		const id = parseInt(params.id || '', 10);
+		if (!isNaN(id)) {
+			cache.delete(`library:${id}`);
+		}
+		return { success: true };
+	},
+	delete: async ({ params }) => {
+		const id = parseInt(params.id || '', 10);
+		if (!isNaN(id)) {
+			arrInstancesQueries.delete(id);
+			cache.delete(`library:${id}`);
+		}
+		redirect(303, '/arr');
+	}
+};
diff --git a/src/routes/arr/[id]/library/+page.svelte b/src/routes/arr/[id]/library/+page.svelte
index 6201dd2..ba2f45d 100644
--- a/src/routes/arr/[id]/library/+page.svelte
+++ b/src/routes/arr/[id]/library/+page.svelte
@@ -1,21 +1,327 @@
 <script lang="ts">
+	import { AlertTriangle, Check, Film, ExternalLink, CircleAlert, RefreshCw, HardDrive, CheckCircle, ArrowUpCircle, Pencil, Trash2, FolderSync, Database } from 'lucide-svelte';
+	import { alertStore } from '$alerts/store';
+	import { enhance } from '$app/forms';
+	import ExpandableTable from '$ui/table/ExpandableTable.svelte';
+	import type { Column } from '$ui/table/types';
 	import type { PageData } from './$types';
+	import type { RadarrLibraryItem } from '$utils/arr/types.ts';
+
+	import ActionsBar from '$ui/actions/ActionsBar.svelte';
+	import SearchAction from '$ui/actions/SearchAction.svelte';
+	import ActionButton from '$ui/actions/ActionButton.svelte';
+	import Dropdown from '$ui/dropdown/Dropdown.svelte';
+	import { createSearchStore } from '$stores/search';
 
 	export let data: PageData;
+
+	let refreshing = false;
+
+	const searchStore = createSearchStore({ debounceMs: 150 });
+
+	function handleChangeProfile(databaseName: string, profileName: string) {
+		const count = moviesWithFiles.length;
+		// TODO: Implement actual profile change functionality
+		alertStore.add('success', `Changing ${count} movies to "${profileName}" from ${databaseName}`);
+	}
+
+	// Get base URL without trailing slash
+	$: baseUrl = data.instance.url.replace(/\/$/, '');
+
+	// Subscribe to debounced query for reactivity
+	$: debouncedQuery = $searchStore.query;
+
+	// Filter movies by search query
+	$: moviesWithFiles = data.library
+		.filter((m) => m.hasFile)
+		.filter((m) => !debouncedQuery || m.title.toLowerCase().includes(debouncedQuery.toLowerCase()));
+
+	// Get progress bar color
+	function getProgressColor(progress: number, cutoffMet: boolean): string {
+		if (cutoffMet) return 'bg-green-500 dark:bg-green-400';
+		if (progress >= 0.75) return 'bg-yellow-500 dark:bg-yellow-400';
+		if (progress >= 0.5) return 'bg-orange-500 dark:bg-orange-400';
+		return 'bg-red-500 dark:bg-red-400';
+	}
+
+	const columns: Column<RadarrLibraryItem>[] = [
+		{ key: 'title', header: 'Title', align: 'left' },
+		{ key: 'qualityProfileName', header: 'Profile', align: 'left', width: 'w-40' },
+		{ key: 'qualityName', header: 'Quality', align: 'left', width: 'w-32' },
+		{ key: 'customFormatScore', header: 'Score', align: 'right', width: 'w-32' },
+		{ key: 'progress', header: 'Progress', align: 'center', width: 'w-48' },
+		{ key: 'actions', header: 'Actions', align: 'center', width: 'w-20' }
+	];
 </script>
 
 <svelte:head>
 	<title>{data.instance.name} - Library - Profilarr</title>
 </svelte:head>
 
-<div class="mt-6">
-	<div class="rounded-lg border border-neutral-200 bg-white p-6 dark:border-neutral-800 dark:bg-neutral-900">
-		<h2 class="text-lg font-semibold text-neutral-900 dark:text-neutral-50">Library</h2>
-		<p class="mt-2 text-sm text-neutral-600 dark:text-neutral-400">
-			View and manage the library for this {data.instance.type} instance.
-		</p>
-		<div class="mt-4 text-sm text-neutral-500 dark:text-neutral-400">
-			Library content coming soon...
+
+<div class="mt-6 space-y-6">
+	{#if data.libraryError}
+		<div class="rounded-lg border border-red-200 bg-red-50 p-6 dark:border-red-800 dark:bg-red-950/40">
+			<div class="flex items-center gap-3">
+				<AlertTriangle class="h-5 w-5 text-red-600 dark:text-red-400" />
+				<div>
+					<h3 class="font-medium text-red-800 dark:text-red-200">Failed to load library</h3>
+					<p class="mt-1 text-sm text-red-600 dark:text-red-400">{data.libraryError}</p>
+				</div>
+			</div>
 		</div>
-	</div>
+	{:else if data.instance.type !== 'radarr'}
+		<div class="rounded-lg border border-neutral-200 bg-white p-6 dark:border-neutral-800 dark:bg-neutral-900">
+			<div class="flex items-center gap-3">
+				<Film class="h-5 w-5 text-neutral-400" />
+				<div>
+					<h3 class="font-medium text-neutral-900 dark:text-neutral-50">Library view not yet available</h3>
+					<p class="mt-1 text-sm text-neutral-600 dark:text-neutral-400">
+						Library view is currently only supported for Radarr instances.
+					</p>
+				</div>
+			</div>
+		</div>
+	{:else if moviesWithFiles.length === 0}
+		<div class="rounded-lg border border-neutral-200 bg-white p-6 dark:border-neutral-800 dark:bg-neutral-900">
+			<div class="flex items-center gap-3">
+				<Film class="h-5 w-5 text-neutral-400" />
+				<div>
+					<h3 class="font-medium text-neutral-900 dark:text-neutral-50">No movies with files</h3>
+					<p class="mt-1 text-sm text-neutral-600 dark:text-neutral-400">
+						This library has {data.library.length} movies but none have downloaded files yet.
+					</p>
+				</div>
+			</div>
+		</div>
+	{:else}
+		<!-- Header with inline stats -->
+		<div class="flex items-center justify-between rounded-lg border border-neutral-200 bg-white px-4 py-3 dark:border-neutral-800 dark:bg-neutral-900">
+			<div class="flex flex-col gap-2">
+				<div class="flex items-center gap-3">
+					<h2 class="text-lg font-semibold text-neutral-900 dark:text-neutral-50">{data.instance.name}</h2>
+					<span class="inline-flex items-center rounded-full bg-orange-100 px-2 py-0.5 text-xs font-medium text-orange-800 dark:bg-orange-900/30 dark:text-orange-400 capitalize">
+						{data.instance.type}
+					</span>
+					<div class="hidden sm:flex items-center gap-2">
+						<span class="inline-flex items-center gap-1 rounded-full bg-neutral-100 px-2 py-0.5 text-xs font-medium text-neutral-700 dark:bg-neutral-800 dark:text-neutral-300" title="Total movies in library">
+							<Film size={12} class="text-blue-500" />
+							{data.library.length} Total
+						</span>
+						<span class="inline-flex items-center gap-1 rounded-full bg-neutral-100 px-2 py-0.5 text-xs font-medium text-neutral-700 dark:bg-neutral-800 dark:text-neutral-300" title="Movies with files on disk">
+							<HardDrive size={12} class="text-purple-500" />
+							{moviesWithFiles.length} On Disk
+						</span>
+						<span class="inline-flex items-center gap-1 rounded-full bg-neutral-100 px-2 py-0.5 text-xs font-medium text-neutral-700 dark:bg-neutral-800 dark:text-neutral-300" title="Movies that have met the quality cutoff">
+							<CheckCircle size={12} class="text-green-500" />
+							{moviesWithFiles.filter((m) => m.cutoffMet).length} Cutoff Met
+						</span>
+						<span class="inline-flex items-center gap-1 rounded-full bg-neutral-100 px-2 py-0.5 text-xs font-medium text-neutral-700 dark:bg-neutral-800 dark:text-neutral-300" title="Movies that can still be upgraded">
+							<ArrowUpCircle size={12} class="text-orange-500" />
+							{moviesWithFiles.filter((m) => !m.cutoffMet).length} Upgradeable
+						</span>
+					</div>
+				</div>
+				<code class="text-xs font-mono text-neutral-500 dark:text-neutral-400">{data.instance.url}</code>
+			</div>
+			<div class="flex items-center gap-2">
+				<form
+					method="POST"
+					action="?/refresh"
+					use:enhance={() => {
+						refreshing = true;
+						return async ({ update }) => {
+							await update();
+							refreshing = false;
+						};
+					}}
+				>
+					<button
+						type="submit"
+						disabled={refreshing}
+						class="inline-flex items-center gap-2 rounded-lg border border-neutral-200 bg-neutral-50 px-3 py-1.5 text-sm font-medium text-neutral-700 transition-colors hover:bg-neutral-100 disabled:opacity-50 dark:border-neutral-700 dark:bg-neutral-800 dark:text-neutral-300 dark:hover:bg-neutral-700"
+					>
+						<RefreshCw size={14} class={refreshing ? 'animate-spin' : ''} />
+						Refresh
+					</button>
+				</form>
+				<a
+					href={baseUrl}
+					target="_blank"
+					rel="noopener noreferrer"
+					class="inline-flex items-center gap-2 rounded-lg border border-neutral-200 bg-neutral-50 px-3 py-1.5 text-sm font-medium text-neutral-700 transition-colors hover:bg-neutral-100 dark:border-neutral-700 dark:bg-neutral-800 dark:text-neutral-300 dark:hover:bg-neutral-700"
+				>
+					Open Radarr
+					<ExternalLink size={14} />
+				</a>
+				<a
+					href="/arr/{data.instance.id}/edit"
+					class="inline-flex items-center justify-center h-8 w-8 rounded-lg border border-neutral-200 bg-neutral-50 text-neutral-700 transition-colors hover:bg-neutral-100 dark:border-neutral-700 dark:bg-neutral-800 dark:text-neutral-300 dark:hover:bg-neutral-700"
+					title="Edit instance"
+				>
+					<Pencil size={14} />
+				</a>
+				<form
+					method="POST"
+					action="?/delete"
+					use:enhance={() => {
+						if (!confirm('Are you sure you want to delete this instance?')) {
+							return ({ cancel }) => cancel();
+						}
+						return async ({ update }) => {
+							await update();
+						};
+					}}
+				>
+					<button
+						type="submit"
+						class="inline-flex items-center justify-center h-8 w-8 rounded-lg border border-red-200 bg-red-50 text-red-600 transition-colors hover:bg-red-100 dark:border-red-800 dark:bg-red-900/20 dark:text-red-400 dark:hover:bg-red-900/40"
+						title="Delete instance"
+					>
+						<Trash2 size={14} />
+					</button>
+				</form>
+			</div>
+		</div>
+
+		<!-- Actions Bar -->
+		<ActionsBar>
+			<SearchAction {searchStore} placeholder="Search movies..." />
+			<ActionButton icon={FolderSync} hasDropdown={true} dropdownPosition="right" square={false}>
+				<span class="ml-2 text-sm text-neutral-700 dark:text-neutral-300">Change Profile</span>
+				<span class="ml-1 text-xs text-neutral-500 dark:text-neutral-400">({moviesWithFiles.length})</span>
+				<svelte:fragment slot="dropdown" let:dropdownPosition let:open>
+					<Dropdown position={dropdownPosition} {open} minWidth="16rem">
+						<div class="max-h-80 overflow-y-auto py-1">
+							{#if data.profilesByDatabase.length === 0}
+								<div class="px-4 py-3 text-sm text-neutral-500 dark:text-neutral-400">
+									No databases configured
+								</div>
+							{:else}
+								{#each data.profilesByDatabase as db}
+									<div class="border-b border-neutral-100 dark:border-neutral-700 last:border-b-0">
+										<div class="px-3 py-2 bg-neutral-50 dark:bg-neutral-900 flex items-center gap-2">
+											<Database size={12} class="text-neutral-400" />
+											<span class="text-xs font-medium text-neutral-500 dark:text-neutral-400 uppercase tracking-wider">
+												{db.databaseName}
+											</span>
+										</div>
+										{#each db.profiles as profile}
+											<button
+												type="button"
+												on:click={() => handleChangeProfile(db.databaseName, profile)}
+												class="w-full px-4 py-2 text-left text-sm text-neutral-700 hover:bg-neutral-100 dark:text-neutral-300 dark:hover:bg-neutral-700"
+											>
+												{profile}
+											</button>
+										{/each}
+									</div>
+								{/each}
+							{/if}
+						</div>
+					</Dropdown>
+				</svelte:fragment>
+			</ActionButton>
+		</ActionsBar>
+
+		<!-- Library Table -->
+		<ExpandableTable {columns} data={moviesWithFiles} getRowId={(row) => row.id} compact={true}>
+			<svelte:fragment slot="cell" let:row let:column>
+				{#if column.key === 'title'}
+					<div>
+						<div class="font-medium text-neutral-900 dark:text-neutral-50">{row.title}</div>
+						{#if row.year}
+							<div class="text-xs text-neutral-500 dark:text-neutral-400">{row.year}</div>
+						{/if}
+					</div>
+				{:else if column.key === 'qualityProfileName'}
+					<div class="relative group inline-flex">
+						<span
+							class="inline-flex items-center gap-1 rounded-full px-2.5 py-0.5 text-xs font-medium {row.isProfilarrProfile ? 'bg-blue-100 text-blue-800 dark:bg-blue-900/30 dark:text-blue-400' : 'bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-400'}"
+						>
+							{#if !row.isProfilarrProfile}
+								<CircleAlert size={12} />
+							{/if}
+							{row.qualityProfileName}
+						</span>
+						{#if !row.isProfilarrProfile}
+							<div class="absolute left-1/2 -translate-x-1/2 bottom-full mb-1 px-2 py-1 text-xs text-white bg-neutral-800 dark:bg-neutral-700 rounded whitespace-nowrap opacity-0 group-hover:opacity-100 pointer-events-none z-10">
+								Not managed by Profilarr
+							</div>
+						{/if}
+					</div>
+				{:else if column.key === 'qualityName'}
+					<code class="rounded bg-neutral-100 px-2 py-1 font-mono text-xs text-neutral-700 dark:bg-neutral-800 dark:text-neutral-300">
+						{row.qualityName ?? 'N/A'}
+					</code>
+				{:else if column.key === 'customFormatScore'}
+					<div class="text-right">
+						<span class="font-mono font-medium {row.cutoffMet ? 'text-green-600 dark:text-green-400' : 'text-neutral-900 dark:text-neutral-100'}">
+							{row.customFormatScore.toLocaleString()}
+						</span>
+						<span class="text-xs text-neutral-500 dark:text-neutral-400">
+							/ {row.cutoffScore.toLocaleString()}
+						</span>
+					</div>
+				{:else if column.key === 'progress'}
+					<div class="flex items-center gap-2">
+						<div class="flex-1 h-2 rounded-full bg-neutral-200 dark:bg-neutral-700 overflow-hidden">
+							<div
+								class="h-full rounded-full transition-all {getProgressColor(row.progress, row.cutoffMet)}"
+								style="width: {Math.min(row.progress * 100, 100)}%"
+							></div>
+						</div>
+						{#if row.cutoffMet}
+							<Check size={16} class="text-green-600 dark:text-green-400 flex-shrink-0" />
+						{:else}
+							<span class="text-xs font-mono text-neutral-500 dark:text-neutral-400 w-10 text-right">
+								{Math.round(row.progress * 100)}%
+							</span>
+						{/if}
+					</div>
+				{:else if column.key === 'actions'}
+					<div class="flex items-center justify-center">
+						{#if row.tmdbId}
+							<a
+								href="{baseUrl}/movie/{row.tmdbId}"
+								target="_blank"
+								rel="noopener noreferrer"
+								class="inline-flex h-7 w-7 items-center justify-center rounded border border-neutral-300 bg-white text-neutral-700 transition-colors hover:bg-neutral-50 dark:border-neutral-700 dark:bg-neutral-800 dark:text-neutral-300 dark:hover:bg-neutral-700"
+								title="Open in Radarr"
+								on:click|stopPropagation
+							>
+								<ExternalLink size={14} />
+							</a>
+						{/if}
+					</div>
+				{/if}
+			</svelte:fragment>
+
+			<svelte:fragment slot="expanded" let:row>
+				<div class="flex flex-col gap-3">
+					<!-- File Name -->
+					{#if row.fileName}
+						<code class="text-xs font-mono text-neutral-600 dark:text-neutral-400 break-all">{row.fileName}</code>
+					{/if}
+
+					<!-- Custom Formats with Scores (sorted by score descending) -->
+					{#if row.scoreBreakdown.length > 0}
+						<div class="flex flex-wrap items-center gap-2">
+							{#each row.scoreBreakdown.toSorted((a, b) => b.score - a.score) as item}
+								<div class="inline-flex items-center gap-1.5 rounded-full px-2.5 py-1 text-xs {item.score > 0 ? 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-400' : item.score < 0 ? 'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-400' : 'bg-neutral-100 text-neutral-600 dark:bg-neutral-800 dark:text-neutral-400'}">
+									<span class="font-medium">{item.name}</span>
+									<span class="font-mono">{item.score >= 0 ? '+' : ''}{item.score.toLocaleString()}</span>
+								</div>
+							{/each}
+							<span class="text-xs text-neutral-500 dark:text-neutral-400">
+								= <span class="font-mono font-medium">{row.customFormatScore.toLocaleString()}</span>
+							</span>
+						</div>
+					{:else}
+						<div class="text-xs text-neutral-500 dark:text-neutral-400">No custom formats matched</div>
+					{/if}
+				</div>
+			</svelte:fragment>
+		</ExpandableTable>
+	{/if}
 </div>
diff --git a/svelte.config.js b/svelte.config.js
index f6bb5cc..38aae90 100644
--- a/svelte.config.js
+++ b/svelte.config.js
@@ -27,6 +27,7 @@ const config = {
 			$http: './src/lib/server/utils/http',
 			$utils: './src/lib/server/utils',
 			$notifications: './src/lib/server/notifications',
+			$cache: './src/lib/server/cache',
 		}
 	}
 };