refactor(ui): separate diff dots with distinct colors, align modal badges

Replace 2 combined dots with 4 individual dots per diff type:
- CUI/TVA (red), Denumire (orange), Adresa (blue), Pret (green)
- Remove redundant price column from dashboard table
- Add --compare design token (orange) for denomination mismatches
- Align modal badge colors with table dot colors (4 separate CSS classes)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

DESIGN.md

@@ -97,6 +97,10 @@ Every admin tool is blue. This one uses amber — reads as "operational" and "at
 
   --cancelled: #78716C;
   --cancelled-light: #F5F5F4;
+
+  --compare: #EA580C;
+  --compare-light: #FFF7ED;
+  --compare-text: #9A3412;
 }
 ```
 
@@ -140,6 +144,10 @@ Strategy: invert surfaces, reduce accent saturation ~15%, keep semantic colors r
 
   --cancelled: #78716C;
   --cancelled-light: rgba(120,113,108,0.15);
+
+  --compare: #EA580C;
+  --compare-light: rgba(234,88,12,0.15);
+  --compare-text: #FB923C;
 }
 ```