style(fe): define global default control width tokens for Select (160px), Search Input (220px), Date (140px) in tokens.css, base.css and AGENTS.md

frontend/src/design-system/base.css

@@ -49,6 +49,29 @@ input[type="text"], input[type="number"], input[type="date"], select, textarea,
   box-sizing: border-box;
 }
 
+/* Default Width Standards for Form & Filter Controls (기본 넓이 표준 규격) */
+select, .p-select, .p-dropdown, .ks-select, .status-select {
+  width: var(--ks-control-width-select);
+  max-width: 100%;
+}
+
+input[type="text"].search-input, .search-input {
+  width: var(--ks-control-width-search);
+  max-width: 100%;
+}
+
+input[type="date"] {
+  width: var(--ks-control-width-date);
+  max-width: 100%;
+}
+
+.filters, .ks-page__filters form, .ks-page__filters section {
+  display: flex;
+  align-items: center;
+  gap: var(--ks-space-2);
+  flex-wrap: wrap;
+}
+
 button, .p-button, .ks-button {
   height: var(--ks-control-height) !important;
   font-size: var(--ks-font-body) !important;

frontend/src/design-system/tokens.css

@@ -57,8 +57,11 @@
   --ks-font-caption: 11px;    /* Caption / Helper 11px */
   --ks-line-caption: 14px;
 
-  /* KBX v60 ERP/OMS/WMS Ultra-Dense Control & Layout Heights */
+  /* KBX v60 ERP/OMS/WMS Ultra-Dense Control & Layout Heights & Default Widths */
   --ks-control-height: 28px;           /* ERP/OMS Input Control 28px */
+  --ks-control-width-select: 160px;    /* Standard Select/Dropdown Default Width 160px */
+  --ks-control-width-search: 220px;    /* Standard Search Input Default Width 220px */
+  --ks-control-width-date: 140px;      /* Standard Date Field Default Width 140px */
   --ks-grid-row-height: 28px;          /* Ultra-Dense Grid Row 28px */
   --ks-grid-header-height: 30px;       /* Grid Header 30px */
   --ks-content-max: 100%;              /* Full Screen Utilization */