Normalize artifact filenames and register new runs (#17)

Rename all output artifacts to their canonical case-id names
(mythos-craft.html / pelican-cycling.svg / skeleton-watch.html, with
-2 suffixes for variants) and drop the now-redundant "file" overrides
from the corresponding models/*.json runs.

Register new Claude Code runs for Opus 4.6 and 4.7 (new model JSONs),
add the GPT-5.5 Pro skeleton-watch run, and regenerate the README
registry tables. Remove stray .DS_Store files from outputs/.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

models/claude-opus-4-8-cc.json

@@ -39,6 +39,13 @@
         },
         "contributor": "OHMFOHS"
       }
-    ]
+    ],
+    "skeleton-watch": {
+      "note": {
+        "zh": "在 Claude Code 中以 Claude Opus 4.8（Max 思考配额）一次生成，本页为未经修改的原始产出。基于 Three.js 的交互式 3D 镂空机械表：可旋转、切换爆炸视图、零件标签高亮与机芯信息面板，含擒纵机构、摆轮等机芯结构。",
+        "en": "Generated in one shot by Claude Opus 4.8 (Max effort) inside Claude Code; unmodified original output. An interactive 3D skeleton mechanical watch on Three.js — orbit rotation, exploded view, highlighted part labels and a movement info panel, with escapement, balance wheel and other movement parts."
+      },
+      "contributor": "Nagi-ovo"
+    }
   }
 }