feat: explorador de arquivos, miniaturas, metadados e recursos periciais (0.3.0)

- Explorador com grade/lista virtualizada, navegação por tipo, data EXIF, pasta e
  câmera, seleção estilo gerenciador de arquivos e visualização rápida.
- Miniaturas no núcleo, metadados (EXIF, PDF, Office, MP4), datas MACB do NTFS/FAT/exFAT.
- Hashes MD5/SHA-1/SHA-256, busca de texto no disco, exportação CSV, relatório HTML,
  detecção de duplicadas, tema, correções de interface e textos sem travessões.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/gui/ui/app.css

@@ -332,3 +332,125 @@ dialog.lightbox[open] { display: grid; }
 
 .hero-logo { width: min(440px, 80%); height: auto; display: block; margin: 0 0 22px -4px; }
 .pill.accent { background: var(--accent-soft); color: var(--accent); }
+
+/* ------------------------------------------------------------ explorador de arquivos */
+.main.fixed { overflow: hidden; }
+.page.wide { max-width: none; padding: 14px 18px 0; }
+.page.fill { height: 100%; display: flex; flex-direction: column; }
+.xp-top { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 8px; }
+.xp-top h1 { font-size: 24px; }
+.xp-top .sub { font-size: 12.5px; }
+.xp-host { flex: 1; min-height: 0; padding-bottom: 12px; }
+.progress-card.slim { padding: 14px 18px; border-radius: 16px; gap: 10px; margin-bottom: 10px; }
+.stats.compact { gap: 22px; }
+.stats.compact .stat b { font-size: 20px; }
+.done-bar { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; padding: 8px 14px; border-radius: 12px; background: var(--accent-soft); margin-bottom: 10px; font-size: 13.5px; }
+.done-bar .grow { flex: 1; }
+
+.xp { position: relative; display: grid; grid-template-columns: 236px minmax(0, 1fr) 340px; grid-template-rows: auto minmax(0, 1fr); gap: 10px 14px; height: 100%; }
+.xp-bar { grid-column: 1 / -1; display: flex; gap: 10px; align-items: center; min-width: 0; }
+.xp-crumb { display: flex; align-items: baseline; gap: 8px; min-width: 0; flex: 1; white-space: nowrap; overflow: hidden; }
+.xp-crumb b { font-size: 15px; overflow: hidden; text-overflow: ellipsis; }
+.xp-crumb small { color: var(--text-3); font-variant-numeric: tabular-nums; }
+.xp-q { flex: 0 1 300px !important; min-width: 120px; }
+.xp-bar .theme-switch button { display: inline-grid; place-items: center; padding: 5px 9px; }
+.xp-bar input[type="range"] { width: 110px; accent-color: var(--accent); }
+.xp-navbtn { display: none; }
+
+.xp-nav { overflow-y: auto; border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); padding: 8px 6px 14px; min-height: 0; }
+.xp-sec { padding: 4px 0 6px; }
+.xp-sec h4 { margin: 8px 10px 4px; font-size: 11.5px; letter-spacing: .02em; color: var(--text-3); font-weight: 600; }
+.xp-node { display: flex; align-items: center; gap: 4px; width: 100%; border: 0; background: transparent; cursor: pointer; text-align: left; padding: 6px 8px 6px calc(8px + var(--d, 0) * 14px); border-radius: 9px; font-size: 13.5px; color: var(--text); }
+.xp-node:hover { background: color-mix(in srgb, var(--text) 6%, transparent); }
+.xp-node.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
+.xp-node .l { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.xp-node small { color: var(--text-3); font-variant-numeric: tabular-nums; font-weight: 400; }
+.xp-node .tw { display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 5px; flex: none; transition: transform .15s; }
+.xp-node .tw:hover { background: color-mix(in srgb, var(--text) 10%, transparent); }
+
+.xp-main { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 0; border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
+.xp-chips { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; padding: 0 12px; }
+.xp-chips:not(:empty) { padding: 10px 12px 2px; }
+.xp-chips .chip { display: inline-flex; gap: 6px; align-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 600; }
+.xp-scroll { position: relative; flex: 1; min-height: 0; overflow-y: auto; outline: none; }
+.xp-sizer { position: relative; width: 100%; }
+.xp-row { position: absolute; left: 0; right: 0; display: flex; gap: 10px; padding: 0 12px; box-sizing: border-box; }
+.xp-row.head { align-items: flex-end; }
+.xp-head { display: flex; align-items: baseline; gap: 10px; width: 100%; padding: 0 2px 6px; border-bottom: 1px solid var(--line); }
+.xp-head b::first-letter { text-transform: uppercase; }
+.xp-head b { font-size: 14px; } .xp-head small { color: var(--text-3); } .xp-hsel { margin-left: auto; border: 0; background: transparent; color: var(--accent); cursor: pointer; font-size: 12.5px; opacity: 0; }
+.xp-head:hover .xp-hsel, .xp-hsel:focus-visible { opacity: 1; }
+
+.xp-tile { position: relative; flex: none; border-radius: 12px; cursor: pointer; user-select: none; -webkit-user-select: none; }
+.xp-thumb { position: relative; border-radius: 12px; overflow: hidden; background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--line); }
+.xp-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; background: var(--surface-2); }
+.xp-tile[aria-selected="true"] .xp-thumb { box-shadow: 0 0 0 3px var(--accent); }
+.xp-tile[data-cur="1"]:focus-visible .xp-thumb, .xp-tile[data-cur="1"] .xp-thumb { outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent); outline-offset: 2px; }
+.xp-ico { width: 100%; height: 100%; display: grid; place-content: center; text-align: center; gap: 2px; color: #fff; }
+.xp-ico span { font-size: 34px; line-height: 1; } .xp-ico b { font-size: 12px; letter-spacing: .04em; opacity: .9; }
+.c-document { background: linear-gradient(145deg, #3b82f6, #1d4ed8); } .c-video { background: linear-gradient(145deg, #8b5cf6, #5b21b6); }
+.c-audio { background: linear-gradient(145deg, #ec4899, #9d174d); } .c-archive { background: linear-gradient(145deg, #f59e0b, #b45309); }
+.c-database { background: linear-gradient(145deg, #14b8a6, #0f766e); } .c-other { background: linear-gradient(145deg, #64748b, #334155); } .c-image { background: linear-gradient(145deg, #0ea5e9, #0369a1); }
+.c-bad { background: linear-gradient(145deg, #6b7280, #374151); }
+.xp-chk { position: absolute; top: 7px; left: 7px; width: 22px; height: 22px; border-radius: 50%; background: rgba(0, 0, 0, .35); box-shadow: inset 0 0 0 2px #fff; opacity: 0; transition: opacity .12s; backdrop-filter: blur(4px); }
+.xp-tile:hover .xp-chk, .xp-tile[aria-selected="true"] .xp-chk, .xp-lrow:hover .xp-chk, .xp-lrow[aria-selected="true"] .xp-chk { opacity: 1; }
+.xp-tile[aria-selected="true"] .xp-chk, .xp-lrow[aria-selected="true"] .xp-chk { background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center / 14px no-repeat; }
+.xp-dot { position: absolute; right: 7px; bottom: 7px; width: 10px; height: 10px; border-radius: 50%; box-shadow: 0 0 0 2px rgba(255, 255, 255, .85); }
+.xp-dot.ok { background: var(--ok); } .xp-dot.warn { background: var(--warn); } .xp-dot.bad { background: var(--bad); }
+.xp-gps { position: absolute; left: 7px; bottom: 6px; color: #fff; filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .6)); }
+.xp-cap { padding: 5px 2px 0; min-width: 0; }
+.xp-cap b { display: block; font-size: 12.5px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.xp-cap small { display: block; font-size: 11.5px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+
+.xp-lrow { position: relative; display: grid; grid-template-columns: 26px 40px minmax(0, 1fr) 132px 76px 58px; gap: 12px; align-items: center; width: 100%; height: 50px; padding: 0 10px; border-radius: 10px; cursor: pointer; user-select: none; }
+.xp-lrow:hover { background: var(--surface-2); }
+.xp-lrow[aria-selected="true"] { background: var(--accent-soft); }
+.xp-lrow .xp-chk { position: static; opacity: .0; }
+.xp-lth { width: 40px; height: 40px; border-radius: 8px; overflow: hidden; background: var(--surface-2); display: grid; place-items: center; }
+.xp-lth img { width: 100%; height: 100%; object-fit: cover; }
+.xp-lth .xp-ico span { font-size: 18px; } .xp-lth .xp-ico b { display: none; }
+.xp-lico { font-size: 18px; width: 100%; height: 100%; display: grid; place-items: center; color: #fff; }
+.xp-lnm { min-width: 0; } .xp-lnm b { display: block; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .xp-lnm small { display: block; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.xp-lcol { color: var(--text-2); font-size: 13px; white-space: nowrap; } .xp-lcol.num { text-align: right; font-variant-numeric: tabular-nums; }
+
+.xp-actions { display: flex; gap: 10px; align-items: center; justify-content: center; flex-wrap: wrap; padding: 10px 14px; border-top: 1px solid var(--line); background: var(--surface); }
+.xp-actions .info { color: var(--text-2); font-size: 13.5px; margin-right: auto; }
+
+.xp-insp { overflow-y: auto; border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); padding: 14px; display: flex; flex-direction: column; gap: 10px; min-height: 0; }
+.xp-insp .viewer { max-height: 38vh; min-height: 150px; }
+.xp-ititle { display: flex; gap: 8px; align-items: flex-start; justify-content: space-between; } .xp-ititle b { overflow-wrap: anywhere; font-size: 15px; }
+.xp-meta h5 { margin: 6px 0 6px; font-size: 12px; color: var(--text-3); font-weight: 600; }
+.xp-multi { display: grid; gap: 12px; padding: 20px 4px; text-align: center; } .xp-multi b { font-size: 18px; }
+.xp-insp-x { display: none; align-self: flex-end; }
+.xp-veil { display: none; }
+.kv dd { overflow-wrap: anywhere; }
+
+@media (max-width: 1280px) { .xp { grid-template-columns: 208px minmax(0, 1fr) 300px; } }
+@media (max-width: 1100px) {
+  .xp { grid-template-columns: minmax(0, 1fr); }
+  .xp-bar { flex-wrap: wrap; }
+  .xp-navbtn { display: inline-grid; }
+  .xp-nav { position: fixed; inset: 0 auto 0 0; width: min(86vw, 310px); z-index: 40; border-radius: 0 var(--radius) var(--radius) 0; transform: translateX(-104%); transition: transform .26s cubic-bezier(.2, .8, .2, 1); }
+  .xp.show-nav .xp-nav { transform: none; }
+  .xp-insp { position: fixed; left: 0; right: 0; bottom: 0; max-height: 80vh; z-index: 40; border-radius: 20px 20px 0 0; transform: translateY(104%); transition: transform .26s cubic-bezier(.2, .8, .2, 1); padding-bottom: calc(14px + env(safe-area-inset-bottom)); }
+  .xp.show-insp .xp-insp { transform: none; }
+  .xp-insp-x { display: inline-grid; }
+  .xp-veil { position: fixed; inset: 0; z-index: 30; background: rgba(0, 0, 0, .32); opacity: 0; pointer-events: none; transition: opacity .2s; display: block; }
+  .xp.show-nav .xp-veil, .xp.show-insp .xp-veil { opacity: 1; pointer-events: auto; }
+  .xp-q { flex: 1 1 140px !important; }
+  .xp-crumb { flex: 1 1 100%; order: -1; }
+}
+@media (max-width: 860px) {
+  .page.wide { padding: 10px 10px 0; }
+  .xp-lrow { grid-template-columns: 26px 40px minmax(0, 1fr) 64px; } .xp-lrow .xp-lcol { display: none; }
+  .xp-bar input[type="range"] { display: none !important; }
+}
+
+.fld { display: grid; gap: 4px; margin: 10px 0; font-size: 13px; color: var(--text-2); }
+.fld textarea { resize: vertical; font: inherit; }
+.hits { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
+.hit { display: grid; grid-template-columns: 130px 80px 90px minmax(0, 1fr); gap: 12px; padding: 9px 14px; border-bottom: 1px solid var(--line); font-size: 13px; align-items: start; }
+.hit.head { background: var(--surface-2); color: var(--text-3); font-size: 12px; }
+.hit .ctx { font-family: var(--mono); font-size: 12px; overflow-wrap: anywhere; color: var(--text-2); }
+.hit mark { background: var(--accent-soft); color: var(--accent); padding: 0 2px; border-radius: 3px; font-weight: 600; }
+@media (max-width: 860px) { .hit { grid-template-columns: 100px 1fr; } .hit span:nth-child(2), .hit span:nth-child(3) { display: none; } }