diff --git a/app/public/app.js b/app/public/app.js
index a3143f2..c5c72b4 100644
--- a/app/public/app.js
+++ b/app/public/app.js
@@ -12,6 +12,18 @@ const FILTERS = {
   vivid: ['Colores vivos', 'saturate(1.45) contrast(1.05)'],
 }
 const DL_ACTIVE = ['queued', 'downloading']
+const fmtSize = b => (b >= 1e9 ? `${(b / 1e9).toFixed(1)} GB` : b >= 1e6 ? `${Math.round(b / 1e6)} MB` : `${Math.round((b || 0) / 1e3)} KB`)
+// Progreso global contando la fracción del capítulo en curso.
+function downloadPct(d) {
+  if (!d?.total) return 0
+  const frac = d.current?.pagesTotal ? d.current.pages / d.current.pagesTotal : 0
+  return Math.min(100, ((d.done + frac) / d.total) * 100)
+}
+function downloadDetail(d) {
+  const c = d?.current
+  if (!c) return d?.status === 'queued' ? 'Esperando turno…' : ''
+  return c.pagesTotal ? `Cap. ${esc(c.chapter ?? '?')} · pág. ${c.pages}/${c.pagesTotal}` : `Cap. ${esc(c.chapter ?? '?')} · preparando…`
+}
 function downloadLabel(d) {
   if (!d) return ''
   const n = `${d.done}/${d.total || '?'}`
@@ -135,39 +147,73 @@ function continueCard(h) {
       <div class="muted" style="font-size:.8rem">${timeAgo(h.updated_at)}</div>
       <div class="bar"><i style="width:${pct}%"></i></div></div></a>`
 }
+const tagHref = (source, t) => `#/?source=${source}&tag=${encodeURIComponent(t.id)}&tagName=${encodeURIComponent(t.name)}`
 async function viewHome(params) {
   const q = params.get('q') || ''
-  const mode = params.get('mode') || 'popular'
+  const tag = params.get('tag') || ''
+  const tagName = params.get('tagName') || tag
+  const mode = tag ? 'cats' : params.get('mode') || 'popular'
   const anyLang = params.get('any') === '1'
   const source = SOURCES[params.get('source')] ? params.get('source') : store.get('source', 'lc')
   store.set('source', source)
+  const showCats = mode === 'cats' && !tag
   app.innerHTML = `
     <section id="cont"></section>
     <div class="tabs" id="sources">${Object.entries(SOURCES).map(([k, v]) => `<button data-s="${k}" class="${k === source ? 'on' : ''}">${v}</button>`).join('')}</div>
-    <form class="search"><input type="search" name="q" placeholder="Buscar en ${esc(SOURCES[source])}…" value="${esc(q)}"><button class="btn primary">Buscar</button></form>
+    <form class="search"><input type="search" name="q" placeholder="Buscar ${tag ? `en «${esc(tagName)}»` : `en ${esc(SOURCES[source])}`}…" value="${esc(q)}"><button class="btn primary">Buscar</button></form>
     <label class="muted row" style="font-size:.88rem" ${source === 'md' ? '' : 'hidden'}><input type="checkbox" name="any" ${anyLang ? 'checked' : ''}> Incluir mangas sin traducción a ${esc(LANGS[me.lang] || me.lang)}</label>
-    ${q ? `<h2>Resultados para “${esc(q)}”</h2>` : `<div class="tabs" id="modes"><button data-m="popular" class="${mode === 'popular' ? 'on' : ''}">Populares</button><button data-m="latest" class="${mode === 'latest' ? 'on' : ''}">Actualizados recientemente</button></div>`}
-    <div id="results" class="loading">Cargando…</div>`
+    ${q && !tag ? `<h2>Resultados para “${esc(q)}”</h2>` : `<div class="tabs" id="modes">
+      <button data-m="popular" class="${mode === 'popular' ? 'on' : ''}">Populares</button>
+      <button data-m="latest" class="${mode === 'latest' ? 'on' : ''}">Actualizados recientemente</button>
+      <button data-m="cats" class="${mode === 'cats' ? 'on' : ''}">Categorías</button></div>`}
+    ${tag ? `<h2>Categoría: <a class="tag on" href="#/?source=${source}&mode=cats" title="Quitar filtro">${esc(tagName)} ✕</a>${q ? ` · “${esc(q)}”` : ''}</h2>` : ''}
+    <div id="results" class="loading">Cargando…</div>
+    <div class="row" style="justify-content:center;margin:16px 0"><button class="btn" id="more" hidden>Cargar más</button></div>`
   const form = $('form', app)
   const go = (extra = {}) => {
-    const p = new URLSearchParams({ source, ...(form.q.value ? { q: form.q.value } : { mode }), ...($('[name=any]').checked ? { any: '1' } : {}), ...extra })
+    const p = new URLSearchParams({ source, ...(form.q.value ? { q: form.q.value } : { mode }), ...(tag ? { tag, tagName } : {}), ...($('[name=any]').checked ? { any: '1' } : {}), ...extra })
     location.hash = `#/?${p}`
   }
   form.addEventListener('submit', e => { e.preventDefault(); go() })
   $('[name=any]').addEventListener('change', () => go())
   app.querySelectorAll('#modes button').forEach(b => b.addEventListener('click', () => { location.hash = `#/?source=${source}&mode=${b.dataset.m}${anyLang ? '&any=1' : ''}` }))
-  app.querySelectorAll('#sources button').forEach(b => b.addEventListener('click', () => go({ source: b.dataset.s })))
+  app.querySelectorAll('#sources button').forEach(b => b.addEventListener('click', () => { location.hash = `#/?source=${b.dataset.s}&mode=${mode}${anyLang ? '&any=1' : ''}` }))
 
   api('/api/history').then(hist => {
-    if (!hist.length || q) return
+    if (!hist.length || q || tag || showCats) return
     $('#cont').innerHTML = `<h2>Continuar leyendo</h2><div class="continue">${hist.slice(0, 12).map(continueCard).join('')}</div>`
   }).catch(() => {})
 
-  const qs = new URLSearchParams({ q, mode, source, ...(anyLang ? { anyLang: '1' } : {}) })
-  const list = await api(`/api/search?${qs}`)
   const res = $('#results')
-  res.className = list.length ? 'grid' : 'loading'
-  res.innerHTML = list.length ? list.map(mangaCard).join('') : 'Sin resultados.'
+  if (showCats) {
+    const cats = await api(`/api/categories?source=${source}`)
+    const groups = cats.reduce((m, c) => m.set(c.group, [...(m.get(c.group) || []), c]), new Map())
+    res.className = 'cats'
+    res.innerHTML = [...groups].map(([g, list]) => `<h3>${esc(g)}</h3><div class="tags">${list.map(t => `<a class="tag big" href="${tagHref(source, t)}">${esc(t.name)}</a>`).join('')}</div>`).join('')
+    return
+  }
+
+  // Paginación: MangaDex siempre; LeerCapitulo solo en categorías (sus otros listados no paginan).
+  const pageable = source === 'md' || !!tag
+  const seen = new Set()
+  let page = 1
+  const load = async () => {
+    const qs = new URLSearchParams({ q, mode, source, page, ...(tag ? { tag } : {}), ...(anyLang ? { anyLang: '1' } : {}) })
+    const list = (await api(`/api/search?${qs}`)).filter(m => !seen.has(m.id) && seen.add(m.id))
+    if (page === 1) {
+      res.className = list.length ? 'grid' : 'loading'
+      res.innerHTML = list.length ? '' : 'Sin resultados.'
+    }
+    res.insertAdjacentHTML('beforeend', list.map(mangaCard).join(''))
+    $('#more').hidden = !pageable || list.length < 20
+  }
+  $('#more').addEventListener('click', async e => {
+    e.target.disabled = true
+    page++
+    try { await load() } catch (err) { toast(err.message) }
+    e.target.disabled = false
+  })
+  await load()
 }
 
 // ---------- Ficha del manga ----------
@@ -196,16 +242,16 @@ async function viewManga(id, langOverride) {
     <div>
       <h1>${esc(manga.title)}</h1>
       <div class="muted">${esc(manga.authors.join(', '))}${manga.year ? ` · ${manga.year}` : ''}${manga.status ? ` · ${esc(manga.status)}` : ''}</div>
-      <div class="tags">${manga.tags.map(t => `<span class="tag">${esc(t)}</span>`).join('')}</div>
+      <div class="tags">${manga.tags.map(t => (t.id ? `<a class="tag" href="${tagHref(manga.source, t)}">${esc(t.name)}</a>` : `<span class="tag">${esc(t.name ?? t)}</span>`)).join('')}</div>
       <p class="desc">${esc(manga.description)}</p>
       <div class="row">${mainBtn}
-        <span id="dl" class="row"></span>
         ${progress || reads.length ? '<button class="btn danger" id="drop">Dejar de leer</button>' : ''}
         ${isLc ? '' : `<select id="lang">${langOpts.map(l => `<option value="${esc(l)}" ${l === lang ? 'selected' : ''}>${esc(LANGS[l] || l)}</option>`).join('')}</select>
         <a class="btn" href="${altSearch}">Buscar en LeerCapitulo</a>`}
       </div>
       <div class="muted" style="font-size:.85rem;margin-top:6px">Fuente: ${esc(SOURCES[manga.source])}${download ? ` · Carpeta: mangas/${esc(download.folder)}` : ''}</div>
       ${offline ? '<p class="error">Sin conexión con la fuente: mostrando solo los capítulos descargados.</p>' : ''}
+      <div id="dl" class="dlbox"></div>
       <p class="error" id="dlerr" style="font-size:.85rem"></p>
     </div>
   </div>
@@ -220,10 +266,12 @@ async function viewManga(id, langOverride) {
     const box = $('#dl')
     if (!box) return
     const active = d && DL_ACTIVE.includes(d.status)
+    const delBtn = d ? `<button class="btn small danger" id="dldel">Eliminar copia local${d.size ? ` (${fmtSize(d.size)})` : ''}</button>` : ''
+    const bar = d && (active || d.done < d.total) ? `<div class="bar dlbar"><i style="width:${downloadPct(d).toFixed(1)}%"></i></div>` : ''
     let html
-    if (!d || d.status === 'cancelled') html = `<button class="btn" id="dlgo">⬇ Descargar${d ? ` (llevas ${d.done}/${d.total})` : ''}</button>`
-    else if (active) html = `<span class="muted">${downloadLabel(d)}</span><button class="btn small" id="dlcancel">Cancelar</button>`
-    else html = `<span class="muted">✓ ${downloadLabel(d)}</span><button class="btn small" id="dlgo" title="Descarga los capítulos que falten">${d.status === 'error' ? 'Reintentar' : 'Buscar nuevos'}</button>`
+    if (!d || d.status === 'cancelled') html = `<div class="row"><button class="btn" id="dlgo">⬇ Descargar${d ? ` (llevas ${d.done}/${d.total})` : ''}</button>${delBtn}</div>${bar}`
+    else if (active) html = `<div class="row"><span>${downloadLabel(d)} · ${Math.floor(downloadPct(d))}%</span><button class="btn small" id="dlcancel">Cancelar</button>${delBtn}</div>${bar}<div class="muted" style="font-size:.8rem">${downloadDetail(d)}</div>`
+    else html = `<div class="row"><span class="muted">✓ ${downloadLabel(d)}</span><button class="btn small" id="dlgo" title="Descarga los capítulos que falten">${d.status === 'error' ? 'Reintentar' : 'Buscar nuevos'}</button>${delBtn}</div>${bar}`
     box.innerHTML = offline ? (d ? `<span class="muted">${downloadLabel(d)}</span>` : '') : html
     $('#dlerr').textContent = d?.status === 'error' ? d.error || '' : ''
     $('#dlgo')?.addEventListener('click', async () => {
@@ -231,13 +279,19 @@ async function viewManga(id, langOverride) {
       toast(`Descargando en mangas/${manga.title}`)
     })
     $('#dlcancel')?.addEventListener('click', async () => renderDl(await api(`/api/download/${id}/cancel`, { method: 'POST' })))
+    $('#dldel')?.addEventListener('click', async () => {
+      if (!confirm(`¿Eliminar la copia local de «${manga.title}»?\nSe borrará la carpeta mangas/${d.folder}${d.size ? ` (${fmtSize(d.size)})` : ''}.\nTu historial de lectura no se toca.`)) return
+      await api(`/api/download/${id}`, { method: 'DELETE' })
+      toast('Copia local eliminada')
+      viewManga(id, langOverride)
+    })
     clearTimeout(dlTimer)
     if (active) dlTimer = setTimeout(async () => {
       const next = await api(`/api/download/${id}`).catch(() => d)
       if (!$('#dl')) return
-      if (next && next.done !== d.done) { const fresh = await api(`/api/manga/${id}?lang=${encodeURIComponent(lang)}`).catch(() => null); fresh?.downloaded.forEach(x => dlSet.add(x)); renderList() }
+      if (next && next.done !== d.done) { const fresh = await api(`/api/manga/${id}?lang=${encodeURIComponent(lang)}`).catch(() => null); fresh?.downloaded.forEach(x => dlSet.add(x)); renderList(); if (fresh?.download) next.size = fresh.download.size }
       renderDl(next)
-    }, 3000)
+    }, 2000)
   }
   renderDl(download)
   cleanup = () => clearTimeout(dlTimer)
@@ -468,21 +522,35 @@ async function viewHistory() {
 
 // ---------- Descargas ----------
 async function viewDownloads() {
-  app.innerHTML = '<div class="loading">Cargando…</div>'
+  if (cleanup) { cleanup(); cleanup = null }
   const list = await api('/api/downloads')
+  if (location.hash !== '#/downloads') return
+  const total = list.reduce((n, d) => n + (d.size || 0), 0)
   app.innerHTML = `<h1>Descargas</h1>
-    <p class="muted">Se guardan en <code>/zdata/media/mangas</code> como CBZ (compatibles con Kavita, Komga, Mihon…). Los capítulos descargados se leen desde el disco.</p>
+    <p class="muted">Se guardan en <code>/zdata/media/mangas</code> como CBZ (compatibles con Kavita, Komga, Mihon…). Los capítulos descargados se leen desde el disco.${list.length ? ` Total: <b>${fmtSize(total)}</b>.` : ''}</p>
     ${list.length ? '' : '<p class="muted">Aún no has descargado nada. Usa “⬇ Descargar” en la ficha de un manga.</p>'}
     <div class="history">${list.map(d => {
-      const pct = d.total ? Math.round((d.done / d.total) * 100) : 0
-      return `<a class="cont" href="#/manga/${d.manga_id}">
-        <div class="info"><b>${esc(d.title)}</b>
-          <div class="muted">${esc(downloadLabel(d))} · mangas/${esc(d.folder)}</div>
+      const active = DL_ACTIVE.includes(d.status)
+      return `<div class="cont">
+        <a class="info" href="#/manga/${d.manga_id}"><b>${esc(d.title)}</b>
+          <div class="muted">${esc(downloadLabel(d))}${active ? ` · ${Math.floor(downloadPct(d))}%` : ''} · ${fmtSize(d.size)} · mangas/${esc(d.folder)}</div>
+          ${active ? `<div class="muted" style="font-size:.8rem">${downloadDetail(d)}</div>` : ''}
           ${d.status === 'error' ? `<div class="error" style="font-size:.8rem">${esc(d.error || '')}</div>` : ''}
-          <div class="bar"><i style="width:${pct}%"></i></div></div></a>`
+          <div class="bar dlbar"><i style="width:${downloadPct(d).toFixed(1)}%"></i></div></a>
+        <div class="row" style="flex:none">
+          ${active ? `<button class="btn small" data-cancel="${esc(d.manga_id)}">Cancelar</button>` : ''}
+          <button class="btn small danger" data-del="${esc(d.manga_id)}" data-title="${esc(d.title)}" data-size="${d.size || 0}">Eliminar</button>
+        </div></div>`
     }).join('')}</div>`
+  app.querySelectorAll('[data-cancel]').forEach(b => b.addEventListener('click', async () => { await api(`/api/download/${b.dataset.cancel}/cancel`, { method: 'POST' }); viewDownloads() }))
+  app.querySelectorAll('[data-del]').forEach(b => b.addEventListener('click', async () => {
+    if (!confirm(`¿Eliminar la copia local de «${b.dataset.title}» (${fmtSize(Number(b.dataset.size))})?\nTu historial de lectura no se toca.`)) return
+    await api(`/api/download/${b.dataset.del}`, { method: 'DELETE' })
+    toast('Copia local eliminada')
+    viewDownloads()
+  }))
   if (list.some(d => DL_ACTIVE.includes(d.status))) {
-    const t = setTimeout(() => location.hash === '#/downloads' && viewDownloads(), 4000)
+    const t = setTimeout(() => location.hash === '#/downloads' && viewDownloads(), 2000)
     cleanup = () => clearTimeout(t)
   }
 }
diff --git a/app/public/style.css b/app/public/style.css
index 82a5744..f3c6feb 100644
--- a/app/public/style.css
+++ b/app/public/style.css
@@ -119,3 +119,13 @@ input:focus, select:focus { border-color: var(--accent); }
   #topbar .brand span { display: none; }
   #topbar nav a { padding: 6px 8px; }
 }
+
+/* Categorías y descargas */
+.cats h3 { font-size: .95rem; color: var(--muted); margin: 18px 0 8px; }
+a.tag { cursor: pointer; }
+a.tag:hover, .tag.on { background: var(--accent); color: var(--accent-ink); }
+.tag.big { font-size: .88rem; padding: 5px 12px; }
+.dlbox { display: grid; gap: 6px; margin-top: 10px; max-width: 520px; }
+.dlbar { height: 8px; border-radius: 4px; overflow: hidden; }
+.dlbar > i { transition: width .6s ease; }
+.history .cont a.info { display: block; min-width: 0; flex: 1; }
diff --git a/app/server.js b/app/server.js
index 93311c8..cd6624f 100644
--- a/app/server.js
+++ b/app/server.js
@@ -167,7 +167,7 @@ function mangaSummary(m, lang) {
     description: pick(a.description, langs),
     status: a.status,
     year: a.year,
-    tags: (a.tags || []).map(t => pick(t.attributes.name, ['es', 'en'])).slice(0, 8),
+    tags: (a.tags || []).map(t => ({ id: t.id, name: pick(t.attributes.name, ['es', 'en']) })).slice(0, 12),
     authors: (m.relationships || []).filter(r => r.type === 'author' && r.attributes).map(r => r.attributes.name),
     languages: a.availableTranslatedLanguages || [],
     cover,
@@ -175,9 +175,12 @@ function mangaSummary(m, lang) {
 }
 const RATINGS = ['safe', 'suggestive']
 
-async function searchManga(q, lang, mode) {
+const PAGE_SIZE = 30
+async function searchManga(q, lang, mode, tag, page = 1) {
   const params = {
-    limit: 30,
+    limit: PAGE_SIZE,
+    offset: (page - 1) * PAGE_SIZE,
+    'includedTags[]': tag ? [tag] : undefined,
     'includes[]': ['cover_art'],
     'contentRating[]': RATINGS,
     'availableTranslatedLanguage[]': lang ? [lang] : undefined,
@@ -189,6 +192,14 @@ async function searchManga(q, lang, mode) {
   return data.data.map(m => mangaSummary(m, lang))
 }
 
+const MD_GROUPS = { genre: 'Géneros', theme: 'Temáticas', format: 'Formato', content: 'Contenido' }
+async function mdCategories() {
+  const data = await md('/manga/tag', {}, 24 * 3600e3)
+  return data.data
+    .map(t => ({ id: t.id, name: pick(t.attributes.name, ['es', 'en']), group: MD_GROUPS[t.attributes.group] || t.attributes.group }))
+    .sort((a, b) => a.group.localeCompare(b.group) || a.name.localeCompare(b.name))
+}
+
 async function getManga(id, lang) {
   const data = await md(`/manga/${id}`, { 'includes[]': ['cover_art', 'author'] }, 30 * 60e3)
   return mangaSummary(data.data, lang)
@@ -286,7 +297,25 @@ function lcParseCards(html) {
   }
   return out
 }
-async function lcSearch(q, mode) {
+const LC_TAG = /^(genre|theme):([a-z0-9-]+)$/
+async function lcCategories() {
+  const html = await lc('/manga/', 24 * 3600e3)
+  const out = []
+  const seen = new Set()
+  for (const m of html.matchAll(/(?:href|value)="\/manga\/\?(genre|theme)=([a-z0-9-]+)"[^>]*>([^<]+)</g)) {
+    const id = `${m[1]}:${m[2]}`
+    if (seen.has(id)) continue
+    seen.add(id)
+    out.push({ id, name: decode(m[3]), group: m[1] === 'genre' ? 'Géneros' : 'Temáticas' })
+  }
+  return out.sort((a, b) => a.group.localeCompare(b.group) || a.name.localeCompare(b.name))
+}
+async function lcSearch(q, mode, tag, page = 1) {
+  const t = LC_TAG.exec(tag || '')
+  if (t) {
+    const html = await lc(`/manga/?${t[1]}=${t[2]}${q ? `&q=${encodeURIComponent(q)}` : ''}${page > 1 ? `&page=${page}` : ''}`)
+    return lcParseCards(html.slice(html.indexOf('</form>')))
+  }
   if (q) {
     const list = await lc(`/search/?q=${encodeURIComponent(q)}`, 10 * 60e3, true)
     return list.map(e => ({ id: lcId(e.uri), source: 'lc', title: decode(e.name), cover: lcCover(e.cover_uri), sub: e.last_chapter_name }))
@@ -325,7 +354,7 @@ async function lcManga(id) {
     description: decode(sinopsis?.replace(/<br\s*\/?>/g, '\n')),
     status: fact('Estado'),
     year: null,
-    tags: [...html.matchAll(/class="badge [^"]*" href="\/manga\/\?(?:genre|theme)=[^"]+">([^<]+)</g)].map(m => decode(m[1])).slice(0, 10),
+    tags: [...html.matchAll(/class="badge [^"]*" href="\/manga\/\?(genre|theme)=([a-z0-9-]+)">([^<]+)</g)].map(m => ({ id: `${m[1]}:${m[2]}`, name: decode(m[3]) })).slice(0, 12),
     authors: fact('Autor') ? [fact('Autor')] : [],
     languages: ['es'],
     cover: lcCover(/class="lc-cover-lg">\s*<img src="([^"]+)"/.exec(html)?.[1]),
@@ -394,8 +423,13 @@ async function fetchMangaFull(mangaId, lang) {
     : { manga: await getManga(mangaId, lang), chapters: await getChapters(mangaId, lang) }
 }
 
+// Progreso del capítulo en curso (solo en memoria): manga_id -> { chapter, pages, pagesTotal }
+const dlCurrent = new Map()
+
 async function downloadChapter(dl, manga, c, dir) {
+  dlCurrent.set(dl.manga_id, { chapter: c.num, pages: 0, pagesTotal: 0 })
   const urls = await withRetry(() => (manga.source === 'lc' ? lcPageUrls(c.id) : getPageUrls(c.id, false, 0)))
+  dlCurrent.set(dl.manga_id, { chapter: c.num, pages: 0, pagesTotal: urls.length })
   const entries = []
   // 4 imágenes en paralelo.
   for (let i = 0; i < urls.length; i += 4) {
@@ -405,6 +439,8 @@ async function downloadChapter(dl, manga, c, dir) {
       const ext = EXT_BY_TYPE[type.split(';')[0]] || urls[n].split('?')[0].split('.').pop().toLowerCase().replace(/[^a-z]/g, '') || 'jpg'
       entries.push({ name: `${String(n + 1).padStart(3, '0')}.${ext}`, data })
     })
+    dlCurrent.set(dl.manga_id, { chapter: c.num, pages: entries.length, pagesTotal: urls.length })
+    if (isCancelled(dl.manga_id)) throw new Error('cancelada')
   }
   entries.push({ name: 'ComicInfo.xml', data: Buffer.from(`<?xml version="1.0" encoding="utf-8"?>
 <ComicInfo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
@@ -414,7 +450,7 @@ async function downloadChapter(dl, manga, c, dir) {
   ${c.title ? `<Title>${xmlEsc(c.title)}</Title>` : ''}
   <Summary>${xmlEsc(manga.description)}</Summary>
   <Writer>${xmlEsc(manga.authors.join(', '))}</Writer>
-  <Genre>${xmlEsc(manga.tags.join(', '))}</Genre>
+  <Genre>${xmlEsc(manga.tags.map(t => t.name ?? t).join(', '))}</Genre>
   <LanguageISO>${xmlEsc((dl.lang || 'es').split('-')[0])}</LanguageISO>
   <PageCount>${urls.length}</PageCount>
   <Manga>YesAndRightToLeft</Manga>
@@ -422,6 +458,11 @@ async function downloadChapter(dl, manga, c, dir) {
 `) })
   const file = chapterFileName(c)
   writeCbz(path.join(dir, file), entries)
+  if (!db.prepare('SELECT 1 FROM downloads WHERE manga_id = ?').get(dl.manga_id)) {
+    // La copia local se eliminó mientras se descargaba este capítulo.
+    fs.rmSync(path.join(dir, file), { force: true })
+    throw new Error('eliminada')
+  }
   db.prepare(`INSERT OR REPLACE INTO downloaded_chapters (chapter_id, manga_id, num, title, file, pages, created_at) VALUES (?, ?, ?, ?, ?, ?, ?)`)
     .run(c.id, dl.manga_id, c.num ?? null, c.title || '', file, urls.length, Date.now())
 }
@@ -431,7 +472,28 @@ const dlUpdate = (mangaId, fields) => {
   db.prepare(`UPDATE downloads SET ${keys.map(k => `${k} = ?`).join(', ')}, updated_at = ? WHERE manga_id = ?`)
     .run(...keys.map(k => fields[k]), Date.now(), mangaId)
 }
-const isCancelled = mangaId => db.prepare('SELECT status FROM downloads WHERE manga_id = ?').get(mangaId)?.status === 'cancelled'
+// Cancelada o eliminada (sin fila) cuentan igual: hay que parar.
+const isCancelled = mangaId => (db.prepare('SELECT status FROM downloads WHERE manga_id = ?').get(mangaId)?.status ?? 'cancelled') === 'cancelled'
+
+function mangaDirOf(folder) {
+  const dir = path.resolve(MANGA_DIR, folder)
+  if (!folder || !dir.startsWith(path.resolve(MANGA_DIR) + path.sep)) throw new HttpError(400, 'Carpeta inválida')
+  return dir
+}
+function dirSize(dir) {
+  let total = 0
+  try { for (const f of fs.readdirSync(dir)) total += fs.statSync(path.join(dir, f)).size } catch {}
+  return total
+}
+function deleteDownload(mangaId) {
+  const dl = db.prepare('SELECT folder FROM downloads WHERE manga_id = ?').get(mangaId)
+  if (!dl) return false
+  const dir = mangaDirOf(dl.folder)
+  db.prepare('DELETE FROM downloads WHERE manga_id = ?').run(mangaId) // borra también downloaded_chapters (CASCADE)
+  dlCurrent.delete(mangaId)
+  fs.rmSync(dir, { recursive: true, force: true })
+  return true
+}
 
 async function runDownload(dl) {
   const { manga, chapters } = await fetchMangaFull(dl.manga_id, dl.lang)
@@ -448,10 +510,11 @@ async function runDownload(dl) {
   let failed = 0
   let lastError = null
   for (const c of pending) {
-    if (isCancelled(dl.manga_id)) return
+    if (isCancelled(dl.manga_id)) break
     try {
       await downloadChapter(dl, manga, c, dir)
     } catch (e) {
+      if (isCancelled(dl.manga_id)) break
       failed++
       lastError = `Cap. ${c.num ?? '?'}: ${e.message}`
       console.warn('Descarga', manga.title, lastError)
@@ -461,6 +524,11 @@ async function runDownload(dl) {
     // MangaDex limita /at-home/server a 40 peticiones por minuto.
     await sleep(manga.source === 'lc' ? 500 : 1600)
   }
+  dlCurrent.delete(dl.manga_id)
+  if (isCancelled(dl.manga_id)) {
+    if (!db.prepare('SELECT 1 FROM downloads WHERE manga_id = ?').get(dl.manga_id)) fs.rmSync(dir, { recursive: true, force: true })
+    return
+  }
   dlUpdate(dl.manga_id, { status: failed ? 'error' : 'done', error: failed ? `${failed} capítulo(s) fallaron. Último error: ${lastError}` : null })
 }
 
@@ -512,7 +580,12 @@ function localChapter(chapterId) {
   }
   return cbzIndexCache.get(key)
 }
-const downloadInfo = mangaId => db.prepare('SELECT manga_id, title, folder, lang, status, done, total, failed, error, updated_at FROM downloads WHERE manga_id = ?').get(mangaId) ?? null
+const withCurrent = d => (d ? { ...d, current: ['queued', 'downloading'].includes(d.status) ? dlCurrent.get(d.manga_id) ?? null : null } : null)
+const downloadInfo = (mangaId, size = false) => {
+  const d = withCurrent(db.prepare('SELECT manga_id, title, folder, lang, status, done, total, failed, error, updated_at FROM downloads WHERE manga_id = ?').get(mangaId))
+  if (d && size) d.size = dirSize(mangaDirOf(d.folder))
+  return d
+}
 
 // ---------- HTTP ----------
 class HttpError extends Error {
@@ -621,10 +694,16 @@ async function route(req, res) {
 
   const lang = LANG.test(q.get('lang') || '') ? q.get('lang') : user.lang
 
+  if (p === '/api/categories' && method === 'GET') {
+    return json(res, 200, q.get('source') === 'lc' ? await lcCategories() : await mdCategories())
+  }
   if (p === '/api/search' && method === 'GET') {
-    if (q.get('source') === 'lc') return json(res, 200, await lcSearch((q.get('q') || '').slice(0, 100), q.get('mode')))
+    const page = Math.min(Math.max(Number(q.get('page')) | 0, 1), 500)
+    const tag = q.get('tag') || ''
+    if (q.get('source') === 'lc') return json(res, 200, await lcSearch((q.get('q') || '').slice(0, 100), q.get('mode'), tag, page))
     const anyLang = q.get('anyLang') === '1'
-    return json(res, 200, await searchManga((q.get('q') || '').slice(0, 100), anyLang ? null : lang, q.get('mode')))
+    const mdTag = /^[0-9a-f-]{36}$/.test(tag) ? tag : null
+    return json(res, 200, await searchManga((q.get('q') || '').slice(0, 100), anyLang ? null : lang, q.get('mode'), mdTag, page))
   }
 
   let m
@@ -646,7 +725,7 @@ async function route(req, res) {
     const reads = db.prepare('SELECT chapter_id, page, total_pages FROM chapter_reads WHERE user_id = ? AND manga_id = ?').all(user.id, m[1])
     const progress = db.prepare('SELECT * FROM progress WHERE user_id = ? AND manga_id = ?').get(user.id, m[1]) ?? null
     const chapterLangs = chapters.length || manga.source === 'lc' || offline ? [] : await getChapterLangs(m[1]).catch(() => [])
-    return json(res, 200, { manga, chapters, lang, reads, progress, chapterLangs, offline, downloaded, download: downloadInfo(m[1]) })
+    return json(res, 200, { manga, chapters, lang, reads, progress, chapterLangs, offline, downloaded, download: downloadInfo(m[1], true) })
   }
   if ((m = /^\/api\/chapter\/([^/]+)$/.exec(p)) && CHAPTER_ID.test(m[1]) && method === 'GET') {
     const local = localChapter(m[1])
@@ -672,7 +751,8 @@ async function route(req, res) {
 
   // --- Descargas ---
   if (p === '/api/downloads' && method === 'GET') {
-    return json(res, 200, db.prepare('SELECT manga_id, title, folder, lang, status, done, total, failed, error, updated_at FROM downloads ORDER BY updated_at DESC').all())
+    return json(res, 200, db.prepare('SELECT manga_id, title, folder, lang, status, done, total, failed, error, updated_at FROM downloads ORDER BY updated_at DESC').all()
+      .map(d => ({ ...withCurrent(d), size: dirSize(mangaDirOf(d.folder)) })))
   }
   if ((m = /^\/api\/download\/([^/]+)$/.exec(p)) && MANGA_ID.test(m[1]) && method === 'GET') {
     return json(res, 200, downloadInfo(m[1]))
@@ -684,6 +764,10 @@ async function route(req, res) {
     enqueueDownload(m[1], title, dlLang)
     return json(res, 200, downloadInfo(m[1]))
   }
+  if ((m = /^\/api\/download\/([^/]+)$/.exec(p)) && MANGA_ID.test(m[1]) && method === 'DELETE') {
+    if (!deleteDownload(m[1])) throw new HttpError(404, 'No hay copia local')
+    return json(res, 200, { ok: true })
+  }
   if ((m = /^\/api\/download\/([^/]+)\/cancel$/.exec(p)) && MANGA_ID.test(m[1]) && method === 'POST') {
     db.prepare("UPDATE downloads SET status = 'cancelled', updated_at = ? WHERE manga_id = ? AND status IN ('queued', 'downloading')").run(Date.now(), m[1])
     return json(res, 200, downloadInfo(m[1]))