Plex: edit a title's details (fields locked on save) and choose its poster or background, owner only, through a narrow write rule in the proxy

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

public/style.css

@@ -701,3 +701,10 @@ body.nav-mini .ngrp span { display: none; }
 .sw.on{border-color:var(--text)}
 .sw.custom{background:conic-gradient(#d9453a,#e5a00d,#2f9e6e,#4f7cff,#8a5cf0,#d9453a);overflow:hidden}
 .sw.custom input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}
+
+/* Plex details editor: image choices */
+.vimgs{display:grid;grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:8px;margin:6px 0}
+.vimgs.arts{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
+.vpick{padding:0;min-height:0;border:2px solid transparent;border-radius:8px;overflow:hidden;background:var(--panel2);cursor:pointer;line-height:0}
+.vpick.on{border-color:var(--accent)}
+.vpick img{width:100%;height:auto;display:block}