feat: add community marketplace for custom widgets and CSS

Adds a PocketBase-backed marketplace where users can share custom widgets
and CSS themes. Includes a Docusaurus storefront with GitHub OAuth login,
submission/voting/comments, and a PocketBase SQL view that computes author
names, vote counts, and comment counts without fragile hooks. The Next.js
app gets a modal browser for one-click install from the marketplace plus
clipboard paste-to-import on the custom widgets pages.

apps/docs/package.json

@@ -21,6 +21,7 @@
     "verify:search": "node ./scripts/verify-algolia-search.mjs"
   },
   "dependencies": {
+    "@base-ui/react": "catalog:",
     "@docusaurus/core": "^3.10.1",
     "@docusaurus/faster": "^3.10.1",
     "@docusaurus/plugin-content-docs": "^3.10.1",
@@ -33,10 +34,12 @@
     "@signalwire/docusaurus-plugin-llms-txt": "^1.2.2",
     "@tabler/icons-react": "catalog:",
     "@tailwindcss/postcss": "^4.3.1",
+    "class-variance-authority": "catalog:",
     "clsx": "catalog:",
     "dayjs": "catalog:",
     "docusaurus-plugin-image-zoom": "^3.0.1",
     "leader-line-new": "^1.1.9",
+    "pocketbase": "catalog:",
     "postcss": "^8.5.15",
     "posthog-docusaurus": "^2.0.5",
     "prism-react-renderer": "^2.4.1",
@@ -44,7 +47,9 @@
     "react": "catalog:",
     "react-dom": "catalog:",
     "swiper": "^12.2.0",
-    "tailwindcss": "^4.3.1"
+    "tailwind-merge": "catalog:",
+    "tailwindcss": "^4.3.1",
+    "zod": "catalog:"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "^3.10.1",
@@ -55,8 +60,7 @@
     "@types/react": "catalog:",
     "@types/react-dom": "catalog:",
     "cheerio": "^1.2.0",
-    "typescript": "catalog:",
-    "zod": "catalog:"
+    "typescript": "catalog:"
   },
   "peerDependencies": {
     "@docusaurus/theme-common": "^3.10.1",