Clean up fake colors and add missing Bambu Lab colors

- Add migration 023: delete 67 fake colors, rename IronGray typo, add 16 missing real colors from spreadsheet
- Fix frontend color mappings: remove typo duplicates, rename Silk prefixed colors to match catalog
- Add Translucent Teal, Phantom Blue, Mystic Magenta mappings
- Remove non-existent ABS GF, TPU 95A HF entries
- Update tests for corrected color names

__tests__/data/bambuLabColors.test.ts

@@ -33,9 +33,9 @@ describe('Bambu Lab Colors Data', () => {
       });
     });
 
-    it('should have Unknown fallback color', () => {
-      expect(bambuLabColors).toHaveProperty('Unknown');
-      expect(bambuLabColors.Unknown.hex).toBe('#CCCCCC');
+    it('should return fallback for unknown colors', () => {
+      const result = getFilamentColor('NonExistentColor');
+      expect(result.hex).toBe('#CCCCCC');
     });
   });
 

__tests__/data/bambuLabColorsComplete.test.ts

@@ -21,9 +21,9 @@ describe('Bambu Lab Colors Complete Data', () => {
   });
 
   it('should have silk colors', () => {
-    expect(bambuLabColors).toHaveProperty('Silk Aurora Purple');
-    expect(bambuLabColors).toHaveProperty('Silk Phantom Blue');
-    expect(bambuLabColors).toHaveProperty('Silk Mystic Magenta');
+    expect(bambuLabColors).toHaveProperty('Aurora Purple');
+    expect(bambuLabColors).toHaveProperty('Phantom Blue');
+    expect(bambuLabColors).toHaveProperty('Mystic Magenta');
   });
 
   it('should have valid hex colors', () => {