feat: fetch for the assistant with Поиск on - a page's main text for the model, the server's own network out of reach; shorter words in Настройки and the chat; the + menu's roots a step left. Also files from panes into the chat, docview and drag fixes (by the user)

internal/server/web/static/dnd.js

@@ -19,6 +19,9 @@
   // start: a pointerdown on a row of pane; the drag begins past 6px.
   function start(ev, pane, tr) {
     if (ev.button !== 0 || ev.target.closest('input, button, a, .act')) return;
+    // Keep the file pane's pointer drag as the only drag source. Otherwise
+    // the browser can start a native text-selection drag beside our ghost.
+    ev.preventDefault();
     const name = tr.dataset.name;
     const names = pane.selected.has(name) ? [...pane.selected] : [name];
     d = {pane, names, x0: ev.clientX, y0: ev.clientY, id: ev.pointerId, on: false,
@@ -56,6 +59,7 @@
     d.target = null;
     box.hidden = true;
     d.ghost.dataset.hint = '';
+    if (window.AIChat) window.AIChat.setDragging(false);
     // Over a tab's title: it opens after half a second.
     const tab = Workspace.tabAt(ev.clientX, ev.clientY);
     if (tab !== d.overTab) {
@@ -64,6 +68,11 @@
       if (tab) d.tabTimer = setTimeout(() => { if (d && d.overTab === tab) Workspace.activate(tab); }, 500);
     }
     if (tab) { d.ghost.dataset.hint = 'открыть вкладку'; return; }
+    if (window.AIChat && window.AIChat.isDropTargetAt(ev.clientX, ev.clientY)) {
+      window.AIChat.setDragging(true);
+      d.target = {kind: 'ai'};
+      return;
+    }
     const pane = Workspace.paneAt(ev.clientX, ev.clientY);
     if (!pane || !pane.dropTarget) return;
     const t = pane.dropTarget(ev.clientX, ev.clientY);
@@ -87,14 +96,23 @@
     x.ghost.remove();
     box.hidden = true;
     document.body.classList.remove('dnd');
+    if (window.AIChat) window.AIChat.setDragging(false);
     justDropped = true;
     setTimeout(() => { justDropped = false; }, 0);
     if (cancel || !x.target) return;
+    if (x.target.kind === 'ai') { window.AIChat.dropFiles(x.pane, x.names); return; }
     const {pane, t, a} = x.target;
     Workspace.setActivePane(pane);
     if (a.kind === 'paste') pane.drop(x.item);
     else if (a.kind === 'transfer') ask(x.item, x.pane, t, ev.clientX, ev.clientY);
   }
+  // While FileDnD owns the pointer, never let the browser start a second,
+  // native drag (for example from the SVG icon or the filename under it).
+  document.addEventListener('dragstart', ev => {
+    if (!d) return;
+    ev.preventDefault();
+    ev.stopImmediatePropagation();
+  }, true);
   window.addEventListener('pointermove', move);
   window.addEventListener('pointerup', ev => end(ev));
   window.addEventListener('pointercancel', ev => end(ev, true));