Add bulk photo selection panel to person page (admin)

On /people/:slug, admins see a sticky left panel and selectable photo
tiles. Clicking a tile (or its checkbox overlay) toggles selection;
clicking without modifier still opens the photo in a new tab. The panel
shows the selection count and two actions:

- Reassign to person: moves the selected photos' face entries from the
  current person's cluster to the chosen person.
- Move to album: moves the photo files on disk and updates album.json,
  faces.json, and people.json rel paths accordingly. Album paths are
  offered via a datalist autocomplete.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/public/css/style.css b/public/css/style.css
index f522bff..93345ad 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -548,6 +548,52 @@ tr.delete-marked td { background: rgba(192,57,43,.08); }
 .person-name { padding: 7px 10px 2px; font-size: .9rem; font-weight: 500; color: var(--text); }
 .person-count { padding: 0 10px 8px; font-size: .75rem; color: var(--text-dim); }
 
+/* ── Person page bulk selection ────────────────────────────────────────── */
+.person-page-wrap  { display: flex; align-items: flex-start; gap: 0; }
+.bulk-panel {
+  width: 220px; flex-shrink: 0; position: sticky; top: 16px;
+  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
+  padding: 14px 16px; margin-right: 20px;
+}
+.bulk-panel-title  { font-size: .95rem; font-weight: 600; margin: 0 0 8px; }
+.bulk-panel-hint   { font-size: .82rem; color: var(--text-dim); margin: 0; }
+.bulk-selected-count { font-size: .9rem; margin: 0; }
+.bulk-sep  { border: none; border-top: 1px solid var(--border); margin: 12px 0; }
+.bulk-label { display: block; font-size: .8rem; color: var(--text-dim); margin-bottom: 4px; }
+.bulk-select, .bulk-input {
+  width: 100%; background: var(--bg3); border: 1px solid var(--border);
+  border-radius: var(--radius); color: var(--text); padding: 5px 8px;
+  font-size: .82rem; margin-bottom: 8px; box-sizing: border-box;
+}
+.bulk-select:focus, .bulk-input:focus { border-color: var(--accent); outline: none; }
+.bulk-action-btn { width: 100%; text-align: center; }
+.person-page-main  { flex: 1; min-width: 0; }
+
+/* Selectable photo cards */
+.selectable-card { cursor: pointer; position: relative; }
+.selectable-card .thumb-wrap { position: relative; }
+.select-checkbox {
+  position: absolute; top: 6px; left: 6px;
+  width: 20px; height: 20px; border-radius: 4px;
+  border: 2px solid rgba(255,255,255,.7);
+  background: rgba(0,0,0,.35);
+  display: flex; align-items: center; justify-content: center;
+  opacity: 0; transition: opacity .12s;
+  pointer-events: none;
+}
+.selectable-card:hover .select-checkbox { opacity: 1; }
+.selectable-card.selected .select-checkbox {
+  opacity: 1; background: var(--accent); border-color: var(--accent);
+}
+.selectable-card.selected .select-checkbox::after {
+  content: ''; display: block;
+  width: 5px; height: 9px;
+  border: 2px solid #fff; border-top: none; border-left: none;
+  transform: rotate(45deg) translate(-1px, -1px);
+}
+.selectable-card.selected .thumb-wrap img { opacity: .75; }
+.selectable-card.selected { outline: 2px solid var(--accent); outline-offset: -2px; }
+
 /* ── Admin upload ──────────────────────────────────────────────────────── */
 .admin-upload { margin-top: 32px; }
 .admin-upload h2 { font-size: 1rem; color: var(--text-dim); margin-bottom: 6px; }