feat(drive): paste images/text from the OS clipboard (Ctrl/⌘+V)

Pressing Ctrl/⌘+V in a space with an image (e.g. a screenshot) or text on
the OS clipboard now creates the file in the open folder — no need to save
it first. Files/images on the clipboard are uploaded as-is (auto-named when
the clipboard gives no name); plain text becomes a .txt file. Works in
normal, Zero-Knowledge (encrypted client-side) and Public spaces, reusing
the existing upload path.

The in-app file clipboard (copy/cut of files) still wins on Ctrl+V; the OS
paste only runs when there's nothing to move internally, and never while an
input/editor is focused or the viewer is open. Shortcuts help + docs updated.

Author: claude

apps/web/src/app/(app)/drive/page.tsx

@@ -483,7 +483,7 @@ export default function EspacesPage() {
   }
 
   const onUpload = useCallback(
-    async (list: FileList | null) => {
+    async (list: FileList | File[] | null) => {
       if (!list || list.length === 0 || !currentFolderId) return;
       const arr = Array.from(list);
       setError(null);
@@ -566,6 +566,56 @@ export default function EspacesPage() {
     };
   }, [activeSpaceId, needPass, onUpload]);
 
+  // Paste from the OS clipboard: Ctrl/⌘+V with an image or text on the clipboard drops it straight
+  // into the open folder. The in-app file clipboard (copy/cut of files) takes precedence and is
+  // handled on keydown; this only runs when there's nothing to move internally.
+  const onPaste = useCallback(
+    async (e: ClipboardEvent) => {
+      if (!activeSpaceId || !currentFolderId || needPass || busy || viewing || clipboard) return;
+      const el = document.activeElement as HTMLElement | null;
+      if (el && (el.tagName === 'INPUT' || el.tagName === 'TEXTAREA' || el.tagName === 'SELECT' || el.isContentEditable)) return;
+      const dt = e.clipboardData;
+      if (!dt) return;
+
+      // A readable timestamp for auto-named pastes (no ':' — invalid in file names).
+      const stamp = () => {
+        const d = new Date();
+        const p = (n: number) => String(n).padStart(2, '0');
+        return `${d.getFullYear()}-${p(d.getMonth() + 1)}-${p(d.getDate())} ${p(d.getHours())}h${p(d.getMinutes())}`;
+      };
+
+      // 1) Files / images on the clipboard (screenshots, copied image files).
+      const files: File[] = [];
+      for (const item of Array.from(dt.items)) {
+        if (item.kind !== 'file') continue;
+        const f = item.getAsFile();
+        if (!f) continue;
+        const named = f.name && /\.[a-z0-9]+$/i.test(f.name)
+          ? f
+          : new File([f], `Image collée ${stamp()}.${(f.type.split('/')[1] || 'png').split('+')[0]}`, { type: f.type || 'image/png' });
+        files.push(named);
+      }
+      if (files.length > 0) {
+        e.preventDefault();
+        await onUpload(files);
+        return;
+      }
+
+      // 2) Plain text → a .txt file.
+      const text = dt.getData('text/plain');
+      if (text && text.trim()) {
+        e.preventDefault();
+        await onUpload([new File([text], `Texte collé ${stamp()}.txt`, { type: 'text/plain' })]);
+      }
+    },
+    [activeSpaceId, currentFolderId, needPass, busy, viewing, clipboard, onUpload],
+  );
+  useEffect(() => {
+    const h = (e: ClipboardEvent) => void onPaste(e);
+    window.addEventListener('paste', h);
+    return () => window.removeEventListener('paste', h);
+  }, [onPaste]);
+
   function openFile(f: PublicFile) {
     setViewing({
       name: f.name,
@@ -1226,8 +1276,12 @@ export default function EspacesPage() {
       return;
     }
     if (mod && e.key.toLowerCase() === 'v') {
-      e.preventDefault();
-      void paste();
+      // Internal file clipboard (copy/cut) wins; otherwise let the native `paste` event handle an
+      // image/text sitting on the OS clipboard (see the onPaste handler).
+      if (clipboard) {
+        e.preventDefault();
+        void paste();
+      }
       return;
     }
     if (mod && e.key.toLowerCase() === 'd') {

apps/web/src/app/docs/page.tsx

@@ -129,6 +129,7 @@ export default function DocsPage() {
           ul: [
             L('Bouton « Importer » (sélection multiple).', '“Import” button (multi-select).'),
             L('Glisser-déposer depuis le bureau, n’importe où sur la page (un grand overlay apparaît).', 'Drag-and-drop from the desktop anywhere on the page (a full-window overlay appears).'),
+            L('Coller (Ctrl/⌘ + V) une image ou du texte du presse-papier : le fichier est créé dans le dossier ouvert.', 'Paste (Ctrl/⌘ + V) an image or text from the clipboard: the file is created in the open folder.'),
             L('Création d’un fichier vide (texte/markdown) qui s’ouvre directement dans l’éditeur.', 'Create an empty (text/markdown) file that opens straight in the editor.'),
             L('Envoi en flux (streaming) : la taille réelle est limitée par votre quota, pas par la RAM.', 'Streaming upload: the real limit is your quota, not RAM.'),
           ],

apps/web/src/lib/i18n.tsx

@@ -257,7 +257,7 @@ const fr: Dict = {
   'drive.scTrash': 'Mettre à la corbeille',
   'drive.scCopy': 'Copier',
   'drive.scCut': 'Couper',
-  'drive.scPaste': 'Coller',
+  'drive.scPaste': 'Coller (fichiers, ou image / texte du presse-papier)',
   'drive.scDuplicate': 'Dupliquer',
   'drive.scClear': 'Retour / annuler la sélection',
   'drive.scHelp': 'Afficher cette aide',
@@ -872,7 +872,7 @@ const en: Dict = {
   'drive.scTrash': 'Move to trash',
   'drive.scCopy': 'Copy',
   'drive.scCut': 'Cut',
-  'drive.scPaste': 'Paste',
+  'drive.scPaste': 'Paste (files, or a clipboard image / text)',
   'drive.scDuplicate': 'Duplicate',
   'drive.scClear': 'Back / clear selection',
   'drive.scHelp': 'Show this help',