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/HomeRecentActivities.vue

@@ -108,7 +108,7 @@ const rows = computed<Row[]>(() => {
 <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;
@@ -151,7 +151,7 @@ a {
 .act-icon {
   width: 38px;
   height: 38px;
-  border-radius: 12px;
+  border-radius: var(--radius);
   background: #ecfdf8;
   color: #14b8a6;
   display: grid;