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>

package.json

@@ -5,7 +5,7 @@
   "main": "server.js",
   "scripts": {
     "start": "node server.js",
-    "test": "for t in smoke tasks push users plex player lyrics signal mail mail-imap; do node tools/$t-test.js || exit 1; done",
+    "test": "for t in smoke tasks push users plex player lyrics signal mail mail-imap files; do node tools/$t-test.js || exit 1; done",
     "audit": "npm audit --omit=dev --audit-level=high"
   },
   "keywords": [],