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/ActivitiesCalendarView.vue

@@ -405,7 +405,7 @@ onMounted(() => {
 h1 {
   margin: 0 0 0.3rem;
   font-size: clamp(1.45rem, 2.5vw, 1.85rem);
-  font-weight: 800;
+  font-weight: 600;
 }
 
 h2 {
@@ -461,7 +461,7 @@ h2 {
   gap: 0.75rem;
   flex-wrap: wrap;
   background: #fff;
-  border-radius: 18px;
+  border-radius: var(--radius);
   padding: 0.75rem 0.95rem;
   box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
 }
@@ -493,7 +493,7 @@ h2 {
 
 .calendar {
   background: #fff;
-  border-radius: 18px;
+  border-radius: var(--radius);
   box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
   padding: 0.85rem;
   min-width: 0;
@@ -519,7 +519,7 @@ h2 {
 .day {
   min-height: 92px;
   border: 1px solid #e2e8f0;
-  border-radius: 14px;
+  border-radius: var(--radius);
   background: #f8fafc;
   padding: 0.45rem;
   text-align: right;
@@ -553,7 +553,7 @@ h2 {
 }
 
 .day.has .num {
-  font-weight: 800;
+  font-weight: 600;
   color: #0f766e;
 }
 
@@ -594,7 +594,7 @@ h2 {
 
 .day-panel {
   background: #fff;
-  border-radius: 18px;
+  border-radius: var(--radius);
   box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
   padding: 1rem;
   display: grid;
@@ -623,7 +623,7 @@ h2 {
   gap: 0.15rem;
   padding: 0.75rem 0.85rem;
   border: 1px solid #f1f5f9;
-  border-radius: 14px;
+  border-radius: var(--radius);
   background: #f8fafc;
   text-decoration: none;
   color: inherit;