chore(web): @pi/ui 0.0.4, initial bundle down to 1.88 MB

The library no longer registers Chart.js on import nor depends on lodash,
so the size warning is gone. Chapter 10 updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -34,7 +34,7 @@
     "@ngrx/signals": "^22.0.1",
     "@ngx-translate/core": "^18.0.0",
     "@ngx-translate/http-loader": "^18.0.0",
-    "@pi/ui": "^0.0.2",
+    "@pi/ui": "^0.0.4",
     "apollo-angular": "^14.2.0",
     "chart.js": "^4.5.1",
     "class-transformer": "^0.5.1",