fix: PageHead header alignment, analytics proxy, and infra improvements (#64)

🤖 Pull request created from `various-fixes` containing PageHead
breadcrumbs and navigation alignment fixes, Umami analytics proxy, and
infrastructure updates.

packages/stl/tsconfig.json

@@ -1,6 +1,7 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
+    "rootDir": "./src",
     "outDir": "./dist",
     "declaration": true,
     "declarationMap": true,