feat(app): redesign magazine grid, improve article views and proxy

- Redesign MagazineGrid with editorial New Yorker-inspired layout
- Simplify ArticleDetail and ArticleOverlay components
- Enhance claude-proxy with improved content extraction
- Add HTML utility for content processing
- Update NewsCard styling and chat message handling
- Clean up worktree references

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -14,7 +14,7 @@
     "clean": "turbo clean"
   },
   "devDependencies": {
-    "turbo": "latest",
+    "turbo": "^2.8.12",
     "typescript": "~5.8.0"
   },
   "packageManager": "pnpm@10.30.3",