feat(ui): standardize design system, modals, sidebar, and form inputs

- Implement unified design system tokens, 10px radius, and IRANSans typography
- Modernize sidebar with Gemini-style collapsed expander, square 1:1 items, and elevated profile flyout
- Standardize all modal dialogs with 16px padding, fixed header/footer, 16px medium title, and sticky bottom actions
- Refactor DealFormView and CustomFieldsSection with standard UiField, UiInput, and UiSelect components
- Add draggable bottom-left QuickCreate floating action button

apps/web/src/components/dashboard/HomeTopCustomers.vue

@@ -47,7 +47,7 @@ function trophy(rank: number) {
 <style scoped>
 .panel {
   background: #fff;
-  border-radius: 20px;
+  border-radius: var(--radius);
   padding: 1rem 1.05rem;
   box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
   border: 1px solid #eef2f7;
@@ -89,12 +89,12 @@ a {
 .cust-avatar {
   width: 38px;
   height: 38px;
-  border-radius: 12px;
+  border-radius: var(--radius);
   background: linear-gradient(145deg, #ccfbf1, #99f6e4);
   color: #0f766e;
   display: grid;
   place-items: center;
-  font-weight: 800;
+  font-weight: 600;
   flex-shrink: 0;
 }