Enhances event layout engine with advanced rendering logic

Introduces sophisticated event layout algorithm for handling complex scheduling scenarios

Adds support for:
- Grid and stacked event rendering
- Automatic column allocation
- Nested event stacking
- Threshold-based event grouping

Improves visual representation of overlapping and concurrent events

.claude/settings.local.json

@@ -11,7 +11,8 @@
       "WebFetch(domain:github.com)",
       "Bash(npm install:*)",
       "WebFetch(domain:raw.githubusercontent.com)",
-      "Bash(npm run css:analyze:*)"
+      "Bash(npm run css:analyze:*)",
+      "Bash(npm run test:run:*)"
     ],
     "deny": [],
     "ask": []