Clean up code. Reorganize files. Port stuff from other branches. + more

This turns the project into a monorepo using pnpm workspaces,
dramatically simplifying the build process. It also fixes a lot of bugs
and just generally makes the codebase a lot cleaner.

example-app/package.json

@@ -1,5 +1,5 @@
 {
-    "name": "hello-nuxt",
+    "name": "example-app",
     "private": true,
     "type": "module",
     "scripts": {
@@ -9,15 +9,13 @@
         "preview": "nuxt preview"
     },
     "dependencies": {
-        "@lit/reactive-element": "^2.1.1",
+        "@impost/lib": "workspace:*",
+        "@impost/widget": "workspace:*",
         "js-toml": "^1.0.2",
-        "lit-element": "^4.2.1",
-        "lit-html": "^3.3.1",
         "nuxt": "latest",
         "nuxt-ssr-lit": "1.6.32",
-        "zod": "^4.1.12",
-        "@impost/lib": "file:../packages/lib",
-        "@impost/widget": "file:../packages/widget"
+        "vue": "^3.5.25",
+        "zod": "^4.1.12"
     },
     "devDependencies": {
         "@types/node": "^24.10.0",