Fix file sharing load speed and move error; misc updates

- Remove recursive directory size calculations (single Seafile API call per list)
- Remove 'Used in this location' usage display
- Fix move using v2 per-type endpoints instead of broken batch endpoint
- Send entry type from frontend for correct move routing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

supabase/migrations/20260414180000_add_expenses.sql

@@ -0,0 +1,14 @@
+create table public.expenses (
+  id uuid default gen_random_uuid() primary key,
+  date date default current_date not null,
+  description text not null,
+  category text not null default 'Other',
+  amount numeric(10,2) not null,
+  notes text default '',
+  receipt_path text,
+  receipt_name text,
+  created_by uuid references public.profiles(id) on delete set null,
+  created_at timestamptz default now() not null
+);
+alter table public.expenses enable row level security;
+create policy "Team all expenses" on public.expenses for all using (get_my_role() = 'team');