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/views/PortalView.vue

@@ -461,7 +461,7 @@ h3 {
 .card {
   background: #fff;
   border: 1px solid #d7e0db;
-  border-radius: 16px;
+  border-radius: var(--radius);
   padding: 1rem;
   display: grid;
   gap: 0.65rem;
@@ -475,7 +475,7 @@ label {
 input,
 textarea {
   border: 1px solid #cfd9d3;
-  border-radius: 12px;
+  border-radius: var(--radius);
   padding: 0.7rem 0.85rem;
   font: inherit;
   width: 100%;
@@ -484,7 +484,7 @@ textarea {
 
 .btn {
   border: 0;
-  border-radius: 12px;
+  border-radius: var(--radius);
   padding: 0.7rem 1rem;
   background: #0f6b54;
   color: #fff;
@@ -531,7 +531,7 @@ textarea {
 
 .msg {
   border: 1px solid #e0e8e3;
-  border-radius: 12px;
+  border-radius: var(--radius);
   padding: 0.7rem 0.85rem;
 }
 
@@ -558,7 +558,7 @@ textarea {
 .score {
   width: 2.3rem;
   height: 2.3rem;
-  border-radius: 10px;
+  border-radius: var(--radius);
   border: 1px solid #cfd9d3;
   background: #fff;
   cursor: pointer;