feat(app): rename a workspace by double-clicking its name

Double-click a sidebar workspace name to edit it inline; Enter/blur commits
via setWorkspaceMeta({name}) (empty/unchanged is a no-op), Esc cancels. The
input stops pointer/key propagation so it doesn't trigger select or drag.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src/Sidebar.tsx

@@ -41,6 +41,7 @@ export function Sidebar({
   const [hovered, setHovered] = useState<string | null>(null);
   const [drag, setDrag] = useState<{ id: string; section: string } | null>(null);
   const [dropAt, setDropAt] = useState<DropAt | null>(null);
+  const [editing, setEditing] = useState<{ id: string; draft: string } | null>(null);
   const dragRef = useRef<{ id: string; section: string } | null>(null);
   const dropRef = useRef<DropAt | null>(null);
   const [, setTick] = useState(0);
@@ -59,6 +60,17 @@ export function Sidebar({
 
   const togglePin = (w: WorkspaceView) => { void setWorkspaceMeta(w.id, { pinned: !w.pinned }); };
 
+  const commitRename = () => {
+    setEditing((cur) => {
+      if (cur) {
+        const name = cur.draft.trim();
+        const w = workspaces.find((x) => x.id === cur.id);
+        if (name && w && name !== w.name) void setWorkspaceMeta(cur.id, { name });
+      }
+      return null;
+    });
+  };
+
   // Persist a new ordering for one section by reassigning sequential `order`
   // values (per-section; values never compared across sections).
   const commitReorder = (items: WorkspaceView[], fromId: string, toIndex: number) => {
@@ -123,7 +135,30 @@ export function Sidebar({
             color: isActive ? COLORS.textPrimary : COLORS.textSecondary,
           }}>
           <span style={{ width: 10, height: 10, borderRadius: "50%", border: `2px solid ${STATE_COLOR[aggregate(w)]}`, boxSizing: "border-box", flex: "0 0 10px" }} />
-          <span style={{ flex: 1, fontWeight: isActive ? 600 : 400, whiteSpace: "nowrap", overflow: "hidden", textOverflow: "ellipsis" }}>{w.name}</span>
+          {editing?.id === w.id ? (
+            <input
+              autoFocus
+              value={editing.draft}
+              onFocus={(e) => e.target.select()}
+              onMouseDown={(e) => e.stopPropagation()}
+              onClick={(e) => e.stopPropagation()}
+              onChange={(e) => setEditing({ id: w.id, draft: e.target.value })}
+              onBlur={commitRename}
+              onKeyDown={(e) => {
+                e.stopPropagation();
+                if (e.key === "Enter") { e.preventDefault(); commitRename(); }
+                else if (e.key === "Escape") { e.preventDefault(); setEditing(null); }
+              }}
+              style={{ flex: 1, minWidth: 0, background: COLORS.bgApp, color: COLORS.textPrimary, border: `1px solid ${COLORS.accent}`, borderRadius: 4, padding: "2px 6px", fontFamily: FONT.ui, fontSize: 13, outline: "none" }}
+            />
+          ) : (
+            <span
+              onDoubleClick={(e) => { e.stopPropagation(); setEditing({ id: w.id, draft: w.name }); }}
+              title="Двойной клик — переименовать"
+              style={{ flex: 1, fontWeight: isActive ? 600 : 400, whiteSpace: "nowrap", overflow: "hidden", textOverflow: "ellipsis" }}>
+              {w.name}
+            </span>
+          )}
           {(hovered === w.id || w.pinned) && (
             <Star size={14} fill={w.pinned ? COLORS.stWait : "none"} color={w.pinned ? COLORS.stWait : COLORS.textMuted}
               style={{ cursor: "pointer", flex: "0 0 14px" }}