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/person-assets/PersonAssetsPanel.vue

@@ -775,7 +775,7 @@ onMounted(async () => {
   gap: 0.28rem;
   min-width: 0;
   padding: 0.8rem 0.9rem;
-  border-radius: 12px;
+  border-radius: var(--radius);
   border: 1px solid #e2e8f0;
   background: #f8fafc;
 }
@@ -789,7 +789,7 @@ onMounted(async () => {
   align-items: baseline;
   gap: 0.3rem;
   font-size: 1.15rem;
-  font-weight: 800;
+  font-weight: 600;
   font-variant-numeric: tabular-nums;
 }
 .balance-box em {
@@ -843,7 +843,7 @@ onMounted(async () => {
   border: 1px solid var(--line);
   background: var(--bg);
   color: var(--text);
-  border-radius: 10px;
+  border-radius: var(--radius);
   padding: 0.45rem 0.75rem;
   cursor: pointer;
 }
@@ -918,7 +918,7 @@ onMounted(async () => {
   justify-content: space-between;
   gap: 0.5rem;
   padding: 0.3rem 0.4rem;
-  border-radius: 8px;
+  border-radius: var(--radius);
   margin-top: 0.25rem;
   font-size: 0.9rem;
 }
@@ -942,21 +942,21 @@ onMounted(async () => {
   color: #92400e;
   background: #fffbeb;
   border: 1px solid #fde68a;
-  border-radius: 8px;
+  border-radius: var(--radius);
   padding: 0.55rem 0.7rem;
   font-size: 0.88rem;
 }
 input,
 select {
   border: 1px solid var(--line);
-  border-radius: 10px;
+  border-radius: var(--radius);
   padding: 0.45rem 0.6rem;
   background: var(--bg);
   color: var(--text);
 }
 .btn {
   border: 0;
-  border-radius: 10px;
+  border-radius: var(--radius);
   padding: 0.45rem 0.8rem;
   background: var(--accent);
   color: #fff;