Files: sturdier Seafile pass-through (timeouts, retries, stop on disconnect), in-place sign-in, saved folder lists, upload name clashes, undo and recycle bin, library search, zip downloads, share link options, text viewer and editor

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

public/style.css

@@ -83,6 +83,8 @@ label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px
   background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 12px; opacity: 0; pointer-events: none;
   transition: .2s; max-width: 90vw; z-index: 10; }
 #toast.on { opacity: 1; transform: translate(-50%, 0); }
+#toast.act { pointer-events: auto; display: flex; align-items: center; gap: 14px; }
+#toast.act button { border: 0; background: none; color: var(--accent-fg, #7aa2ff); font-weight: 700; padding: 0 4px; font-size: 15px; }
 
 /* Tablet / iPad (incl. 12.9" portrait 1024 + landscape 1366) and desktop: side rail */
 @media (min-width: 768px) {
@@ -570,3 +572,7 @@ body.nav-mini .ngrp span { display: none; }
 .sgrp a.on { background: var(--accent); color: var(--accent-t); font-weight: 600; }
 .psel { width: auto; min-height: 38px; padding: 0 12px; border-radius: 999px; font-size: 14px; }
 @media (max-width: 560px) { .ptop h1 { width: 100%; } .pspace { display: none; } .ptop .btn { margin-left: auto; } }
+
+/* Text preview and editing */
+.ptxt { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 60dvh; overflow: auto; background: var(--panel2); border-radius: 12px; padding: 12px 14px; font: 13px/1.5 ui-monospace, Menlo, Consolas, monospace; margin: 8px 0; }
+.ptxt-edit { width: 100%; height: 55dvh; font: 13px/1.5 ui-monospace, Menlo, Consolas, monospace; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); resize: vertical; }