refactor(ui): deprecated accent.amber->main 91건 + 매직 리터럴 토큰화 (WS3)

- accent.amber/amberDim/amberGlow -> accent.main/dim/glow 91건 (34파일).
  theme.ts의 @deprecated 별칭 참조 제거 (본체 main 사용).
- inline fontSize/fontWeight -> d3roTypo, borderRadius -> d3roRadius 토큰 37건.
- P4: 화면 고유 수치(스탯 fontSize, 레이아웃 width)는 토큰화 제외.
정책: docs/REFACTOR_POLICY.md DP1, 이식 인사이트 P4

apps/desktop/src/renderer/components/FileDropZone.tsx

@@ -127,11 +127,11 @@ export function FileDropZone(): React.ReactElement {
           sx={{
             p: 4,
             textAlign: 'center',
-            border: `2px dashed ${dragging ? d3roPalette.accent.amber : d3roPalette.border.subtle}`,
-            borderRadius: '8px',
+            border: `2px dashed ${dragging ? d3roPalette.accent.main : d3roPalette.border.subtle}`,
+            borderRadius: d3roRadius.small,
             cursor: 'pointer',
             transition: 'border-color 0.2s',
-            '&:hover': { borderColor: d3roPalette.accent.amber },
+            '&:hover': { borderColor: d3roPalette.accent.main },
           }}
         >
           <FileUp size={40} style={{ color: d3roPalette.text.inactive, marginBottom: 8 }} />
@@ -175,7 +175,7 @@ export function FileDropZone(): React.ReactElement {
                   height: 6,
                   borderRadius: 3,
                   bgcolor: d3roPalette.bg.inset,
-                  '& .MuiLinearProgress-bar': { bgcolor: d3roPalette.accent.amber },
+                  '& .MuiLinearProgress-bar': { bgcolor: d3roPalette.accent.main },
                 }}
               />
               <PhosphorText variant="dim">
@@ -214,7 +214,7 @@ export function FileDropZone(): React.ReactElement {
             <Box sx={{ display: 'flex', gap: 0.5 }}>
               <Tooltip title={copied ? 'Copied!' : t('fileTranscription.copyAll')}>
                 <IconButton size="small" onClick={handleCopy}>
-                  <Copy size={16} style={{ color: copied ? d3roPalette.accent.amber : d3roPalette.text.inactive }} />
+                  <Copy size={16} style={{ color: copied ? d3roPalette.accent.main : d3roPalette.text.inactive }} />
                 </IconButton>
               </Tooltip>
               <IconButton size="small" onClick={handleReset}>
@@ -229,7 +229,7 @@ export function FileDropZone(): React.ReactElement {
               overflow: 'auto',
               p: 2,
               bgcolor: d3roPalette.bg.inset,
-              borderRadius: '6px',
+              borderRadius: d3roRadius.xs,
               fontSize: d3roTypo.compact.size,
               lineHeight: d3roTypo.compact.line,
               color: d3roPalette.text.primary,