feat: P2.9 VNCtalk + P2.10 Collabora + P2.11 Calendar Enhancements + P2.13 VNCdirectory Admin

- P2.9: VNCtalk video meeting — create/update meeting from event modal,
  'Join Meeting' link in event detail. Admin config vnctalkServerUrl.
- P2.10: Collabora online editing — 'Edit with Collabora' for office files,
  WOPI discovery + edit URL. Admin config collaboraServerUrl.
- P2.11: Calendar enhancements — clickable links in descriptions,
  participant contact popover, Reply/Reply All from event, timezone picker,
  map links for locations.
- P2.13: VNCdirectory IDP admin panel — Connection, SAML/IDP, LDAP,
  Authentication, Federated Apps configuration. Secret masking on display.

components/files/file-browser.tsx

@@ -11,7 +11,7 @@ import {
   AlertCircle, Star, Clock, FolderUp,
   FileArchive, FileSpreadsheet, Presentation, FileCode,
   Box, PenTool, Terminal as TerminalIcon, Database, Type as TypeIcon,
-  Menu, Users, Share2, MailPlus, Paperclip,
+  Menu, Users, Share2, MailPlus, Paperclip, ExternalLink,
 } from "lucide-react";
 import { useIsDesktop } from "@/hooks/use-media-query";
 import { Button } from "@/components/ui/button";
@@ -208,6 +208,14 @@ function isDatabaseFile(name: string): boolean {
   return DATABASE_EXTENSIONS.has(ext);
 }
 
+const OFFICE_EXTENSIONS = new Set([
+  "docx", "xlsx", "pptx", "odt", "ods", "odp", "doc", "xls", "ppt",
+]);
+function isOfficeFile(name: string): boolean {
+  const ext = name.split(".").pop()?.toLowerCase() || "";
+  return OFFICE_EXTENSIONS.has(ext);
+}
+
 function isPreviewable(name: string): boolean {
   return isImageFile(name) || isTextFile(name) || isPdfFile(name) || isAudioFile(name) || isVideoFile(name);
 }
@@ -1075,6 +1083,33 @@ export function FileBrowser({
                     {t("send_as_attachment")} {fileNames.length > 1 && `(${fileNames.length})`}
                   </Button>
                 )}
+                {!showBatch && hasFiles && fileNames.length === 1 && isOfficeFile(fileNames[0]) && (
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    className="h-8"
+                    onClick={async () => {
+                      const file = resources.find((r) => r.name === fileNames[0]);
+                      if (!file) return;
+                      try {
+                        const res = await fetch("/api/collabora/edit", {
+                          method: "POST",
+                          headers: { "Content-Type": "application/json" },
+                          body: JSON.stringify({ fileId: file.id, fileName: file.name }),
+                        });
+                        if (res.ok) {
+                          const { url } = await res.json();
+                          window.open(url, "_blank", "noopener,noreferrer");
+                        }
+                      } catch (err) {
+                        console.error("Collabora edit failed:", err);
+                      }
+                    }}
+                  >
+                    <Pencil className="w-4 h-4 me-1" />
+                    Edit with Collabora
+                  </Button>
+                )}
               </>
             );
           })()}
@@ -1797,6 +1832,32 @@ export function FileBrowser({
                 {t("download")}
               </button>
             )}
+            {!resources.find(r => r.name === contextMenu.name)?.isDirectory && isOfficeFile(contextMenu.name) && (
+              <button
+                className="w-full flex items-center gap-2 px-3 py-2 text-sm hover:bg-muted transition-colors text-start"
+                onClick={async () => {
+                  const file = resources.find((r) => r.name === contextMenu.name);
+                  if (!file) { setContextMenu(null); return; }
+                  try {
+                    const res = await fetch("/api/collabora/edit", {
+                      method: "POST",
+                      headers: { "Content-Type": "application/json" },
+                      body: JSON.stringify({ fileId: file.id, fileName: file.name }),
+                    });
+                    if (res.ok) {
+                      const { url } = await res.json();
+                      window.open(url, "_blank", "noopener,noreferrer");
+                    }
+                  } catch (err) {
+                    console.error("Collabora edit failed:", err);
+                  }
+                  setContextMenu(null);
+                }}
+              >
+                <ExternalLink className="w-4 h-4" />
+                Edit with Collabora
+              </button>
+            )}
             <button
               className="w-full flex items-center gap-2 px-3 py-2 text-sm hover:bg-muted transition-colors text-start"
               onClick={() => {