feat(ui/ux): unify typography to Pretendard and enforce read-only view mode as default

- Set global font-family to Pretendard and letter-spacing to -0.02em.
- Standardized table header font-size to var(--fs-sm).
- Fixed table clipping and sticky header behavior at 1920x1080.
- Implemented dynamic select options in search filters.
- Enforced 'view' mode as default for all asset modals (PC, Server, SW, etc.).
- Improved Modal logic to ensure all fields (including dynamic rows) are correctly locked.
- Updated Location View detail button from 'Edit' to 'View'.
- Updated design_rule.md to reflect new typography standards.

src/styles/common.css

@@ -52,12 +52,8 @@
   letter-spacing: -0.02em;
 }
 
-h1, h2, h3, .stat-value {
-  letter-spacing: -0.05em;
-}
-
 body {
-  font-family: 'Inter', 'Geist', 'Pretendard Variable', -apple-system, sans-serif;
+  font-family: 'Pretendard Variable', 'Pretendard', -apple-system, sans-serif;
   color: var(--text-main);
   background-color: var(--bg-color);
   line-height: 1.5;
@@ -140,6 +136,14 @@ input, textarea {
   overflow: hidden;
 }
 
+.view-content-wrapper {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  width: 100%;
+}
+
 /* --- View Toggle (Vercel Tab Style) --- */
 .view-toggle {
   display: inline-flex;
@@ -499,7 +503,7 @@ input:checked + .role-slider:before {
   font-weight: 600;
   color: var(--mute);
   text-transform: uppercase;
-  letter-spacing: 0.05em;
+  letter-spacing: -0.02em;
 }
 
 .search-item input, 
@@ -591,7 +595,7 @@ input:checked + .role-slider:before {
   font-size: var(--fs-md);
   font-weight: 600;
   color: var(--primary);
-  letter-spacing: -0.05em;
+  letter-spacing: -0.02em;
   line-height: 1;
 }
 
@@ -626,6 +630,6 @@ input:checked + .role-slider:before {
 
 .main-footer p {
   margin: 0;
-  letter-spacing: 0.02em;
+  letter-spacing: -0.02em;
 }