chore: migrated context + series-detail + migrate

src/components/pages/Library.svelte

@@ -170,6 +170,7 @@
 
 <div
   class="root"
+  role="presentation"
   bind:this={scrollEl}
   on:contextmenu={(e) => {
     if ((e.target as HTMLElement).closest("button")) return;

src/components/pages/MigrateModal.svelte

@@ -0,0 +1,472 @@
+<script lang="ts">
+  import { onMount, onDestroy } from "svelte";
+  import { X, MagnifyingGlass, CircleNotch, ArrowRight, Check, Warning, Sparkle } from "phosphor-svelte";
+  import { gql, thumbUrl } from "../../lib/client";
+  import { GET_SOURCES, FETCH_SOURCE_MANGA, FETCH_CHAPTERS, UPDATE_MANGA, UPDATE_CHAPTERS_PROGRESS } from "../../lib/queries";
+  import type { Manga, Source, Chapter } from "../../lib/types";
+
+  export let manga: Manga;
+  export let currentChapters: Chapter[];
+  export let onClose: () => void;
+  export let onMigrated: (newManga: Manga) => void;
+
+  type Step = "source" | "search" | "confirm";
+
+  interface Match {
+    manga: Manga;
+    chapters: Chapter[];
+    readCount: number;
+    similarity: number;
+  }
+
+  function titleSimilarity(a: string, b: string): number {
+    const norm = (s: string) =>
+      s.toLowerCase().replace(/[^a-z0-9\s]/g, "").split(/\s+/).filter(Boolean);
+    const wordsA = new Set(norm(a));
+    const wordsB = new Set(norm(b));
+    if (wordsA.size === 0 || wordsB.size === 0) return 0;
+    const intersection = [...wordsA].filter((w) => wordsB.has(w)).length;
+    const union = new Set([...wordsA, ...wordsB]).size;
+    return intersection / union;
+  }
+
+  let step: Step            = "source";
+  let sources: Source[]     = [];
+  let loadingSources        = true;
+  let selectedSource: Source | null = null;
+  let query                 = manga.title;
+  let results: { manga: Manga; similarity: number }[] = [];
+  let searching             = false;
+  let selectedMatch: Match | null = null;
+  let loadingMatchId: number | null = null;
+  let migrating             = false;
+  let error: string | null  = null;
+
+  $: readCount      = currentChapters.filter((c) => c.isRead).length;
+  $: totalCount     = currentChapters.length;
+  $: chapterDiff    = selectedMatch ? selectedMatch.chapters.length - totalCount : 0;
+  $: STEPS          = (["source", "search", "confirm"] as Step[]);
+  $: stepIdx        = STEPS.indexOf(step);
+
+  onMount(() => {
+    gql<{ sources: { nodes: Source[] } }>(GET_SOURCES)
+      .then((d) => sources = d.sources.nodes.filter((s) => s.id !== "0" && s.id !== manga.source?.id))
+      .catch(console.error)
+      .finally(() => loadingSources = false);
+
+    window.addEventListener("keydown", onKey);
+  });
+
+  onDestroy(() => window.removeEventListener("keydown", onKey));
+
+  function onKey(e: KeyboardEvent) { if (e.key === "Escape") onClose(); }
+
+  async function searchSource(src: Source, q: string) {
+    if (!src || !q.trim()) return;
+    searching = true; results = []; error = null;
+    try {
+      const d = await gql<{ fetchSourceManga: { mangas: Manga[] } }>(FETCH_SOURCE_MANGA, {
+        source: src.id, type: "SEARCH", page: 1, query: q.trim(),
+      });
+      const scored = d.fetchSourceManga.mangas.map((m) => ({
+        manga: m,
+        similarity: titleSimilarity(manga.title, m.title),
+      }));
+      scored.sort((a, b) => b.similarity - a.similarity);
+      results = scored;
+    } catch (e: any) {
+      error = e.message;
+    } finally {
+      searching = false;
+    }
+  }
+
+  function pickSource(src: Source) {
+    selectedSource = src;
+    step = "search";
+    searchSource(src, query);
+  }
+
+  async function selectMatch(m: Manga, similarity: number) {
+    loadingMatchId = m.id; error = null;
+    try {
+      const d = await gql<{ fetchChapters: { chapters: Chapter[] } }>(FETCH_CHAPTERS, { mangaId: m.id });
+      const chapters = d.fetchChapters.chapters;
+      const matchReadCount = chapters.filter((c) => {
+        const old = currentChapters.find((o) => Math.abs(o.chapterNumber - c.chapterNumber) < 0.01);
+        return old?.isRead;
+      }).length;
+      selectedMatch = { manga: m, chapters, readCount: matchReadCount, similarity };
+      step = "confirm";
+    } catch (e: any) {
+      error = e.message;
+    } finally {
+      loadingMatchId = null;
+    }
+  }
+
+  async function migrate() {
+    if (!selectedMatch) return;
+    migrating = true; error = null;
+    try {
+      const { manga: newManga, chapters: newChapters } = selectedMatch;
+      const oldByNum = new Map(currentChapters.map((c) => [Math.round(c.chapterNumber * 100), c]));
+
+      const toMarkRead: number[] = [];
+      const toMarkBookmarked: number[] = [];
+      const progressUpdates: { id: number; lastPageRead: number }[] = [];
+
+      for (const nc of newChapters) {
+        const key = Math.round(nc.chapterNumber * 100);
+        const old = oldByNum.get(key);
+        if (!old) continue;
+        if (old.isRead) toMarkRead.push(nc.id);
+        if (old.isBookmarked) toMarkBookmarked.push(nc.id);
+        if ((old.lastPageRead ?? 0) > 0 && !old.isRead)
+          progressUpdates.push({ id: nc.id, lastPageRead: old.lastPageRead! });
+      }
+
+      if (toMarkRead.length)
+        await gql(UPDATE_CHAPTERS_PROGRESS, { ids: toMarkRead, isRead: true });
+      if (toMarkBookmarked.length)
+        await gql(UPDATE_CHAPTERS_PROGRESS, { ids: toMarkBookmarked, isBookmarked: true });
+      for (const { id, lastPageRead } of progressUpdates)
+        await gql(UPDATE_CHAPTERS_PROGRESS, { ids: [id], lastPageRead });
+
+      await gql(UPDATE_MANGA, { id: newManga.id, inLibrary: true });
+      await gql(UPDATE_MANGA, { id: manga.id, inLibrary: false });
+
+      onMigrated({ ...newManga, inLibrary: true });
+    } catch (e: any) {
+      error = e.message;
+      migrating = false;
+    }
+  }
+</script>
+
+<!-- svelte-ignore a11y-click-events-have-key-events -->
+<!-- svelte-ignore a11y-no-static-element-interactions -->
+<div class="overlay" on:click={(e) => { if (e.target === e.currentTarget) onClose(); }}>
+  <div class="modal">
+
+    <!-- Header -->
+    <div class="modal-header">
+      <div class="modal-title">
+        <span class="modal-title-label">Migrate source</span>
+        <span class="modal-title-manga">{manga.title}</span>
+      </div>
+      <button class="close-btn" on:click={onClose}><X size={14} weight="light" /></button>
+    </div>
+
+    <!-- Step indicators -->
+    <div class="steps">
+      {#each STEPS as st, i}
+        <div class="step" class:step-active={step === st} class:step-done={i < stepIdx}>
+          <span class="step-dot">
+            {#if i < stepIdx}<Check size={9} weight="bold" />{:else}{i + 1}{/if}
+          </span>
+          <span class="step-label">
+            {st === "source" ? "Pick source" : st === "search" ? (selectedSource ? selectedSource.displayName : "Search") : "Confirm"}
+          </span>
+        </div>
+      {/each}
+    </div>
+
+    <!-- Body -->
+    <div class="body">
+
+      <!-- Step 1: Pick source -->
+      {#if step === "source"}
+        <div class="source-list">
+          {#if loadingSources}
+            <div class="centered">
+              <CircleNotch size={16} weight="light" class="anim-spin" style="color:var(--text-faint)" />
+            </div>
+          {:else if sources.length === 0}
+            <div class="centered"><span class="hint">No other sources installed.</span></div>
+          {:else}
+            {#each sources as src}
+              <button
+                class="source-row"
+                class:source-row-active={selectedSource?.id === src.id}
+                on:click={() => pickSource(src)}>
+                <img src={thumbUrl(src.iconUrl)} alt={src.name} class="source-icon"
+                  on:error={(e) => { (e.target as HTMLImageElement).style.display = "none"; }} />
+                <div class="source-info">
+                  <span class="source-name">{src.displayName}</span>
+                  <span class="source-meta">{src.lang.toUpperCase()}{src.isNsfw ? " · NSFW" : ""}</span>
+                </div>
+                <ArrowRight size={13} weight="light" class="source-arrow" />
+              </button>
+            {/each}
+          {/if}
+        </div>
+
+      <!-- Step 2: Search & pick match -->
+      {:else if step === "search"}
+        <div class="search-step">
+
+          <!-- Source context pill -->
+          {#if selectedSource}
+            <div class="search-context">
+              <img src={thumbUrl(selectedSource.iconUrl)} alt="" class="search-context-icon"
+                on:error={(e) => { (e.target as HTMLImageElement).style.display = "none"; }} />
+              <span class="search-context-name">{selectedSource.displayName}</span>
+              <button class="search-context-change" on:click={() => { step = "source"; results = []; }}>Change</button>
+            </div>
+          {/if}
+
+          <div class="search-row">
+            <div class="search-bar">
+              <MagnifyingGlass size={13} weight="light" class="search-icon" />
+              <input class="search-input" bind:value={query}
+                on:keydown={(e) => e.key === "Enter" && selectedSource && searchSource(selectedSource, query)}
+                placeholder="Search title…" autofocus />
+            </div>
+            <button class="search-btn"
+              on:click={() => selectedSource && searchSource(selectedSource, query)}
+              disabled={searching || !selectedSource}>
+              {#if searching}
+                <CircleNotch size={13} weight="light" class="anim-spin" />
+              {:else}
+                <MagnifyingGlass size={12} weight="bold" /> Search
+              {/if}
+            </button>
+          </div>
+
+          {#if error}<p class="error"><Warning size={13} weight="light" /> {error}</p>{/if}
+
+          <div class="results">
+            {#if searching}
+              {#each Array(6) as _, i}
+                <div class="sk-result">
+                  <div class="skeleton sk-cover"></div>
+                  <div class="sk-meta">
+                    <div class="skeleton sk-title"></div>
+                    <div class="skeleton sk-title" style="width:40%"></div>
+                  </div>
+                </div>
+              {/each}
+            {:else}
+              {#each results as { manga: m, similarity }, idx}
+                <button class="result-row"
+                  on:click={() => selectMatch(m, similarity)}
+                  disabled={loadingMatchId !== null}>
+                  <div class="result-cover-wrap">
+                    <img src={thumbUrl(m.thumbnailUrl)} alt={m.title} class="result-cover" />
+                  </div>
+                  <div class="result-info">
+                    <span class="result-title">{m.title}</span>
+                    <div class="result-meta">
+                      {#if idx === 0 && similarity > 0.5}
+                        <span class="best-match-badge"><Sparkle size={9} weight="fill" /> Best match</span>
+                      {/if}
+                      <span class="sim-bar"><span class="sim-fill" style="width:{Math.round(similarity * 100)}%"></span></span>
+                      <span class="sim-label">{Math.round(similarity * 100)}% match</span>
+                    </div>
+                  </div>
+                  {#if loadingMatchId === m.id}
+                    <CircleNotch size={13} weight="light" class="anim-spin" style="color:var(--text-faint);flex-shrink:0" />
+                  {:else}
+                    <ArrowRight size={13} weight="light" style="color:var(--text-faint);flex-shrink:0;opacity:0.5" />
+                  {/if}
+                </button>
+              {/each}
+              {#if !searching && results.length === 0 && !error}
+                <div class="centered">
+                  <span class="hint">{query ? "No results — try a different title." : "Enter a title to search."}</span>
+                </div>
+              {/if}
+            {/if}
+          </div>
+        </div>
+
+      <!-- Step 3: Confirm -->
+      {:else if step === "confirm" && selectedMatch}
+        <div class="confirm-step">
+          <div class="confirm-row">
+            <div class="confirm-manga">
+              <div class="confirm-cover-wrap">
+                <img src={thumbUrl(manga.thumbnailUrl)} alt={manga.title} class="confirm-cover" />
+              </div>
+              <p class="confirm-title">{manga.title}</p>
+              <p class="confirm-source">{manga.source?.displayName ?? "Unknown"}</p>
+              <span class="confirm-tag">Current</span>
+            </div>
+
+            <div class="confirm-divider">
+              <ArrowRight size={16} weight="light" class="confirm-arrow" />
+            </div>
+
+            <div class="confirm-manga">
+              <div class="confirm-cover-wrap">
+                <img src={thumbUrl(selectedMatch.manga.thumbnailUrl)} alt={selectedMatch.manga.title} class="confirm-cover" />
+              </div>
+              <p class="confirm-title">{selectedMatch.manga.title}</p>
+              <p class="confirm-source">{selectedSource?.displayName ?? "Unknown"}</p>
+              <span class="confirm-tag confirm-tag-new">New</span>
+            </div>
+          </div>
+
+          <div class="confirm-stats">
+            <div class="stat-row">
+              <span class="stat-label">Title match</span>
+              <span class="stat-val"
+                class:stat-good={selectedMatch.similarity > 0.7}
+                class:stat-warn={selectedMatch.similarity > 0.4 && selectedMatch.similarity <= 0.7}
+                class:stat-bad={selectedMatch.similarity <= 0.4}>
+                {Math.round(selectedMatch.similarity * 100)}%
+              </span>
+            </div>
+            <div class="stat-row">
+              <span class="stat-label">Chapters on new source</span>
+              <span class="stat-val" class:stat-warn={chapterDiff < -5}>
+                {selectedMatch.chapters.length}
+                {#if chapterDiff !== 0}
+                  <span class="chapter-diff">{chapterDiff > 0 ? `+${chapterDiff}` : chapterDiff} vs current</span>
+                {/if}
+              </span>
+            </div>
+            <div class="stat-row">
+              <span class="stat-label">Read progress to carry over</span>
+              <span class="stat-val">{selectedMatch.readCount} / {readCount} chapters</span>
+            </div>
+          </div>
+
+          {#if chapterDiff < -5}
+            <div class="warn-box">
+              <Warning size={13} weight="light" />
+              New source has {Math.abs(chapterDiff)} fewer chapters — some content may be missing.
+            </div>
+          {/if}
+
+          <p class="confirm-note">The current entry will be removed from your library. Downloads are not transferred.</p>
+
+          {#if error}<p class="error"><Warning size={13} weight="light" /> {error}</p>{/if}
+
+          <div class="confirm-actions">
+            <button class="back-btn" on:click={() => step = "search"} disabled={migrating}>Back</button>
+            <button class="migrate-btn" on:click={migrate} disabled={migrating}>
+              {#if migrating}
+                <CircleNotch size={13} weight="light" class="anim-spin" /> Migrating…
+              {:else}
+                <Check size={13} weight="bold" /> Migrate
+              {/if}
+            </button>
+          </div>
+        </div>
+      {/if}
+
+    </div>
+  </div>
+</div>
+
+<style>
+  .overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 200; animation: fadeIn 0.1s ease both; }
+  .modal { background: var(--bg-base); border: 1px solid var(--border-base); border-radius: var(--radius-xl); width: 520px; max-height: 80vh; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 8px 40px rgba(0,0,0,0.5); }
+  .modal-header { display: flex; align-items: flex-start; justify-content: space-between; padding: var(--sp-4) var(--sp-5); border-bottom: 1px solid var(--border-dim); flex-shrink: 0; }
+  .modal-title { display: flex; flex-direction: column; gap: 2px; }
+  .modal-title-label { font-family: var(--font-ui); font-size: var(--text-2xs); color: var(--text-faint); letter-spacing: var(--tracking-wider); text-transform: uppercase; }
+  .modal-title-manga { font-size: var(--text-base); font-weight: var(--weight-medium); color: var(--text-primary); letter-spacing: var(--tracking-tight); }
+  .close-btn { display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: var(--radius-md); color: var(--text-faint); background: none; border: none; cursor: pointer; transition: color var(--t-base), background var(--t-base); flex-shrink: 0; }
+  .close-btn:hover { color: var(--text-muted); background: var(--bg-raised); }
+
+  /* Steps */
+  .steps { display: flex; align-items: center; gap: var(--sp-1); padding: var(--sp-3) var(--sp-5); border-bottom: 1px solid var(--border-dim); flex-shrink: 0; }
+  .step { display: flex; align-items: center; gap: var(--sp-2); opacity: 0.4; transition: opacity var(--t-base); }
+  .step + .step::before { content: "›"; color: var(--text-faint); margin-right: var(--sp-1); font-size: var(--text-sm); }
+  .step-active { opacity: 1; }
+  .step-done   { opacity: 0.6; }
+  .step-dot { width: 18px; height: 18px; border-radius: 50%; background: var(--bg-raised); border: 1px solid var(--border-base); display: flex; align-items: center; justify-content: center; font-family: var(--font-ui); font-size: 10px; color: var(--text-faint); flex-shrink: 0; }
+  .step-active .step-dot { background: var(--accent-muted); border-color: var(--accent-dim); color: var(--accent-fg); }
+  .step-label { font-family: var(--font-ui); font-size: var(--text-2xs); letter-spacing: var(--tracking-wide); color: var(--text-muted); }
+  .step-active .step-label { color: var(--text-secondary); }
+
+  /* Body */
+  .body { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
+  .centered { flex: 1; display: flex; align-items: center; justify-content: center; padding: var(--sp-8); }
+  .hint { font-family: var(--font-ui); font-size: var(--text-xs); color: var(--text-faint); letter-spacing: var(--tracking-wide); }
+
+  /* Source list */
+  .source-list { flex: 1; overflow-y: auto; padding: var(--sp-2); display: flex; flex-direction: column; gap: 1px; }
+  .source-row { display: flex; align-items: center; gap: var(--sp-3); padding: 9px var(--sp-3); border-radius: var(--radius-md); border: 1px solid transparent; background: none; text-align: left; width: 100%; cursor: pointer; transition: background var(--t-fast), border-color var(--t-fast); }
+  .source-row:hover { background: var(--bg-raised); border-color: var(--border-dim); }
+  .source-row-active { background: var(--accent-muted); border-color: var(--accent-dim); }
+  .source-icon { width: 28px; height: 28px; border-radius: var(--radius-md); object-fit: cover; flex-shrink: 0; background: var(--bg-raised); }
+  .source-info { flex: 1; display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
+  .source-name { font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+  .source-meta { font-family: var(--font-ui); font-size: var(--text-2xs); color: var(--text-faint); letter-spacing: var(--tracking-wide); }
+  :global(.source-arrow) { color: var(--text-faint); opacity: 0; transition: opacity var(--t-base); }
+  .source-row:hover :global(.source-arrow) { opacity: 1; }
+
+  /* Search step */
+  .search-step { flex: 1; overflow: hidden; display: flex; flex-direction: column; gap: var(--sp-3); padding: var(--sp-3) var(--sp-4); }
+  .search-context { display: flex; align-items: center; gap: var(--sp-2); padding: var(--sp-2) var(--sp-3); background: var(--bg-raised); border: 1px solid var(--border-dim); border-radius: var(--radius-md); flex-shrink: 0; }
+  .search-context-icon { width: 18px; height: 18px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
+  .search-context-name { flex: 1; font-size: var(--text-sm); color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+  .search-context-change { font-family: var(--font-ui); font-size: var(--text-2xs); letter-spacing: var(--tracking-wide); color: var(--accent-fg); background: none; border: none; cursor: pointer; padding: 0; flex-shrink: 0; transition: opacity var(--t-base); }
+  .search-context-change:hover { opacity: 0.75; }
+  .search-row { display: flex; align-items: center; gap: var(--sp-2); flex-shrink: 0; }
+  .search-bar { flex: 1; display: flex; align-items: center; gap: var(--sp-2); background: var(--bg-raised); border: 1px solid var(--border-dim); border-radius: var(--radius-md); padding: 0 var(--sp-3) 0 var(--sp-2); transition: border-color var(--t-base); }
+  .search-bar:focus-within { border-color: var(--border-strong); }
+  :global(.search-icon) { color: var(--text-faint); flex-shrink: 0; }
+  .search-input { flex: 1; background: none; border: none; outline: none; color: var(--text-primary); font-size: var(--text-sm); padding: 7px 0; }
+  .search-input::placeholder { color: var(--text-faint); }
+  .search-btn { font-family: var(--font-ui); font-size: var(--text-xs); letter-spacing: var(--tracking-wide); padding: 6px 12px; border-radius: var(--radius-md); background: var(--accent-muted); color: var(--accent-fg); border: 1px solid var(--accent-dim); cursor: pointer; flex-shrink: 0; display: flex; align-items: center; gap: var(--sp-1); transition: filter var(--t-base); }
+  .search-btn:hover:not(:disabled) { filter: brightness(1.1); }
+  .search-btn:disabled { opacity: 0.4; cursor: default; }
+  .results { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 1px; }
+  .result-row { display: flex; align-items: center; gap: var(--sp-3); padding: 7px var(--sp-2); border-radius: var(--radius-md); border: none; background: none; text-align: left; width: 100%; cursor: pointer; transition: background var(--t-fast); }
+  .result-row:hover:not(:disabled) { background: var(--bg-raised); }
+  .result-row:disabled { opacity: 0.5; cursor: default; }
+  .result-cover-wrap { width: 36px; height: 54px; border-radius: var(--radius-sm); overflow: hidden; background: var(--bg-raised); border: 1px solid var(--border-dim); flex-shrink: 0; }
+  .result-cover { width: 100%; height: 100%; object-fit: cover; }
+  .result-info { flex: 1; display: flex; flex-direction: column; gap: 4px; overflow: hidden; min-width: 0; }
+  .result-title { font-size: var(--text-sm); color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+  .result-meta { display: flex; align-items: center; gap: var(--sp-2); }
+  .best-match-badge { display: inline-flex; align-items: center; gap: 3px; font-family: var(--font-ui); font-size: 9px; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--accent-fg); background: var(--accent-muted); border: 1px solid var(--accent-dim); padding: 1px 5px; border-radius: var(--radius-sm); flex-shrink: 0; }
+  .sim-bar { width: 48px; height: 3px; background: var(--bg-overlay); border-radius: var(--radius-full); overflow: hidden; flex-shrink: 0; display: inline-block; }
+  .sim-fill { display: block; height: 100%; background: var(--accent); border-radius: var(--radius-full); transition: width 0.2s ease; }
+  .sim-label { font-family: var(--font-ui); font-size: var(--text-2xs); color: var(--text-faint); letter-spacing: var(--tracking-wide); white-space: nowrap; }
+
+  /* Skeletons */
+  .sk-result { display: flex; align-items: center; gap: var(--sp-3); padding: 7px var(--sp-2); }
+  .sk-cover { width: 36px; height: 54px; border-radius: var(--radius-sm); flex-shrink: 0; }
+  .sk-meta { flex: 1; display: flex; flex-direction: column; gap: var(--sp-2); }
+  .sk-title { height: 13px; width: 65%; border-radius: var(--radius-sm); }
+
+  /* Confirm step */
+  .confirm-step { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: var(--sp-4); padding: var(--sp-4) var(--sp-5); }
+  .confirm-row { display: flex; align-items: center; justify-content: center; gap: var(--sp-4); }
+  .confirm-manga { display: flex; flex-direction: column; align-items: center; gap: var(--sp-2); flex: 1; max-width: 160px; }
+  .confirm-cover-wrap { width: 100%; aspect-ratio: 2/3; border-radius: var(--radius-md); overflow: hidden; background: var(--bg-raised); border: 1px solid var(--border-dim); }
+  .confirm-cover { width: 100%; height: 100%; object-fit: cover; }
+  .confirm-title { font-size: var(--text-xs); color: var(--text-secondary); text-align: center; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: var(--leading-snug); }
+  .confirm-source { font-family: var(--font-ui); font-size: var(--text-2xs); color: var(--text-faint); letter-spacing: var(--tracking-wide); text-align: center; }
+  .confirm-divider { display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
+  :global(.confirm-arrow) { color: var(--text-faint); }
+  .confirm-tag { font-family: var(--font-ui); font-size: var(--text-2xs); letter-spacing: var(--tracking-wide); text-transform: uppercase; padding: 2px 7px; border-radius: var(--radius-full); background: var(--bg-raised); border: 1px solid var(--border-dim); color: var(--text-faint); }
+  .confirm-tag-new { background: var(--accent-muted); border-color: var(--accent-dim); color: var(--accent-fg); }
+  .confirm-stats { display: flex; flex-direction: column; gap: var(--sp-2); background: var(--bg-raised); border: 1px solid var(--border-dim); border-radius: var(--radius-md); padding: var(--sp-3) var(--sp-4); }
+  .stat-row { display: flex; justify-content: space-between; align-items: center; }
+  .stat-label { font-family: var(--font-ui); font-size: var(--text-xs); color: var(--text-muted); letter-spacing: var(--tracking-wide); }
+  .stat-val { font-family: var(--font-ui); font-size: var(--text-xs); color: var(--text-secondary); letter-spacing: var(--tracking-wide); }
+  .stat-good { color: var(--color-success) !important; }
+  .stat-warn { color: #d97706 !important; }
+  .stat-bad  { color: var(--color-error) !important; }
+  .chapter-diff { font-family: var(--font-ui); font-size: var(--text-2xs); color: #d97706; letter-spacing: var(--tracking-wide); margin-left: var(--sp-2); }
+  .warn-box { display: flex; align-items: center; gap: var(--sp-2); padding: var(--sp-2) var(--sp-3); background: rgba(217,119,6,0.08); border: 1px solid rgba(217,119,6,0.25); border-radius: var(--radius-md); font-size: var(--text-xs); color: #d97706; line-height: var(--leading-snug); }
+  .confirm-note { font-size: var(--text-xs); color: var(--text-faint); line-height: var(--leading-base); }
+  .confirm-actions { display: flex; justify-content: flex-end; gap: var(--sp-2); flex-shrink: 0; }
+  .back-btn { font-family: var(--font-ui); font-size: var(--text-xs); letter-spacing: var(--tracking-wide); padding: 6px 10px; border-radius: var(--radius-md); background: none; color: var(--text-muted); border: 1px solid var(--border-dim); cursor: pointer; flex-shrink: 0; transition: color var(--t-base), border-color var(--t-base), background var(--t-base); }
+  .back-btn:hover:not(:disabled) { color: var(--text-secondary); border-color: var(--border-strong); background: var(--bg-raised); }
+  .back-btn:disabled { opacity: 0.4; cursor: default; }
+  .migrate-btn { display: flex; align-items: center; gap: var(--sp-2); font-family: var(--font-ui); font-size: var(--text-xs); letter-spacing: var(--tracking-wide); padding: 7px 16px; border-radius: var(--radius-md); background: var(--accent-dim); border: 1px solid var(--accent); color: var(--accent-fg); cursor: pointer; transition: background var(--t-base), border-color var(--t-base); }
+  .migrate-btn:hover:not(:disabled) { background: var(--accent-muted); border-color: var(--accent-bright); }
+  .migrate-btn:disabled { opacity: 0.5; cursor: default; }
+
+  /* Error */
+  .error { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--text-xs); color: var(--color-error); padding: var(--sp-2) var(--sp-3); background: rgba(180,60,60,0.08); border-radius: var(--radius-md); border: 1px solid rgba(180,60,60,0.2); }
+
+  @keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }
+</style>

src/components/pages/SeriesDetail.svelte

@@ -15,6 +15,7 @@
   import { settings, activeManga, activeChapter, genreFilter, navPage, addToast, updateSettings, addFolder, assignMangaToFolder, removeMangaFromFolder, getMangaFolders, openReader } from "../../store";
   import type { Manga, Chapter } from "../../lib/types";
   import ContextMenu, { type MenuEntry } from "../shared/ContextMenu.svelte";
+  import MigrateModal from "./MigrateModal.svelte";
 
   const CHAPTERS_PER_PAGE  = 25;
   const MANGA_TTL_MS       = 5 * 60 * 1000;
@@ -48,6 +49,7 @@
   let showRange                   = false;
   let dlDropRef: HTMLDivElement;
   let folderPickerRef: HTMLDivElement;
+  let migrateOpen = false;
 
   let mangaAbort: AbortController | null   = null;
   let chapterAbort: AbortController | null = null;
@@ -316,9 +318,9 @@
 </script>
 
 {#if $activeManga}
-<div class="root" on:contextmenu|preventDefault>
+<div class="root" role="presentation" on:contextmenu|preventDefault>
 
-  <!-- Sidebar -->
+  
   <div class="sidebar">
     <button class="back" on:click={() => activeManga.set(null)}>
       <ArrowLeft size={13} weight="light" /> Back
@@ -410,7 +412,7 @@
             {#if manga.status}<div class="detail-row"><span class="detail-key">Status</span><span class="detail-val">{statusLabel}</span></div>{/if}
             {#if manga.author}<div class="detail-row"><span class="detail-key">Author</span><span class="detail-val">{manga.author}</span></div>{/if}
             {#if manga.artist && manga.artist !== manga.author}<div class="detail-row"><span class="detail-key">Artist</span><span class="detail-val">{manga.artist}</span></div>{/if}
-            <button class="migrate-btn" on:click={() => {}}>
+            <button class="migrate-btn" on:click={() => migrateOpen = true}>
               <ArrowsClockwise size={12} weight="light" /> Switch source
             </button>
             {#if downloadedCount > 0}
@@ -424,7 +426,7 @@
     {/if}
   </div>
 
-  <!-- Chapter list -->
+  
   <div class="list-wrap">
     <div class="list-header">
       <div class="list-header-left">
@@ -441,7 +443,7 @@
           <ArrowsClockwise size={14} weight="light" class={refreshing ? "anim-spin" : ""} />
         </button>
 
-        <!-- Folder picker -->
+        
         <div class="fp-wrap" bind:this={folderPickerRef}>
           <button class="icon-btn" class:active={hasFolders} on:click={() => folderPickerOpen = !folderPickerOpen}>
             <FolderSimplePlus size={14} weight={hasFolders ? "fill" : "light"} />
@@ -476,7 +478,7 @@
           {/if}
         </div>
 
-        <!-- Jump to chapter -->
+        
         {#if chapters.length > 1}
           <div class="jump-wrap">
             {#if !jumpOpen}
@@ -504,7 +506,7 @@
           </div>
         {/if}
 
-        <!-- Download dropdown -->
+        
         {#if chapters.length > 0}
           <div class="dl-wrap" bind:this={dlDropRef}>
             <button class="icon-btn" on:click={() => dlOpen = !dlOpen}>
@@ -631,6 +633,19 @@
 {#if ctx}
   <ContextMenu x={ctx.x} y={ctx.y} items={buildCtxItems(ctx.chapter, ctx.idx)} onClose={() => ctx = null} />
 {/if}
+
+{#if migrateOpen && manga}
+  <MigrateModal
+    {manga}
+    currentChapters={chapters}
+    onClose={() => migrateOpen = false}
+    onMigrated={(newManga) => {
+      activeManga.set(newManga);
+      migrateOpen = false;
+      cache.clear(CACHE_KEYS.LIBRARY);
+    }}
+  />
+{/if}
 {/if}
 
 <script context="module">