fix(design): address PR #97 review — all items

Review fixes:
- Eyebrows moved from Head tab to Hair tab (with brow tint + beard tint)
- Head tab now has skin tone dock only
- Eyebrow names match asset keys (regular, female, teen, thick)
- Added earring L/R and necklace slots to Accessories tab
- Added wrist L/R slot labels already present, shifted grid for 3rd row
- Removed "Other" row label for Child (no gendered framing)
- D-155 cross-reference anchor fixed (was stale "full-360-rotation")
- D-160 segment count corrected 17→18 (added torso_upper)
- D-164 rationale corrected: Superhero mesh retained as muscular type
- Added compositor segment visibility note to implementation section
- D-165 cross-ref clarified (clothing colors only, not skin tones)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/design/wireframes/character-creation/head-tab.json

@@ -269,70 +269,6 @@
       "fontColor": "#c8d0e0", "fontSize": 10
     },
 
-    "eyebrows-label": {
-      "type": "Text",
-      "parent": "tab-content",
-      "left": 756, "top": 414,
-      "text": "EYEBROWS",
-      "fontColor": "#c8d0e0", "fontSize": 12
-    },
-    "brow-1": {
-      "type": "Rectangle",
-      "parent": "tab-content",
-      "left": 756, "top": 432, "width": 80, "height": 52,
-      "fillColor": "#3a4050", "strokeColor": "#c8d8f0",
-      "corners": [4, 4, 4, 4]
-    },
-    "brow-1-label": {
-      "type": "Text",
-      "parent": "brow-1",
-      "left": 770, "top": 464,
-      "text": "Thick",
-      "fontColor": "#c8d8f0", "fontSize": 10
-    },
-    "brow-2": {
-      "type": "Rectangle",
-      "parent": "tab-content",
-      "left": 844, "top": 432, "width": 80, "height": 52,
-      "fillColor": "#3a4050", "strokeColor": "#333340",
-      "corners": [4, 4, 4, 4]
-    },
-    "brow-2-label": {
-      "type": "Text",
-      "parent": "brow-2",
-      "left": 862, "top": 464,
-      "text": "Thin",
-      "fontColor": "#c8d0e0", "fontSize": 10
-    },
-    "brow-3": {
-      "type": "Rectangle",
-      "parent": "tab-content",
-      "left": 932, "top": 432, "width": 80, "height": 52,
-      "fillColor": "#3a4050", "strokeColor": "#333340",
-      "corners": [4, 4, 4, 4]
-    },
-    "brow-3-label": {
-      "type": "Text",
-      "parent": "brow-3",
-      "left": 946, "top": 464,
-      "text": "Arched",
-      "fontColor": "#c8d0e0", "fontSize": 10
-    },
-    "brow-4": {
-      "type": "Rectangle",
-      "parent": "tab-content",
-      "left": 1020, "top": 432, "width": 80, "height": 52,
-      "fillColor": "#3a4050", "strokeColor": "#333340",
-      "corners": [4, 4, 4, 4]
-    },
-    "brow-4-label": {
-      "type": "Text",
-      "parent": "brow-4",
-      "left": 1038, "top": 464,
-      "text": "None",
-      "fontColor": "#c8d0e0", "fontSize": 10
-    },
-
     "scroll-hint": {
       "type": "Text",
       "parent": "tab-content",