[APP-1418] - Create testbed for embed service

bskyembed/README.md

@@ -0,0 +1,31 @@
+## Run / Test
+
+### Prep
+
+#### In `/bskyembed`
+
+    # install deps
+    yarn
+
+#### In `/` (root)
+
+Make sure to follow main setup instructions first.
+
+    # generate embed static files
+    yarn build-embed
+
+### Running
+
+#### In `/bskyweb`
+
+    # run embedr service
+    make run-dev-embedr
+
+#### In `/bskyembed`
+
+    # run dev server
+    yarn dev
+
+Web server will be available at http://localhost:5173.
+
+Navigate to http://localhost:5173/test for a comprehensive live list of embed test cases.

bskyembed/snippet/embed.ts

@@ -3,9 +3,10 @@ interface Window {
   bluesky: {
     scan: (element?: Pick<Element, 'querySelectorAll'>) => void
   }
+  EMBED_URL?: string
 }
 
-const EMBED_URL = 'https://embed.bsky.app'
+const EMBED_URL = window.EMBED_URL || 'https://embed.bsky.app'
 
 window.bluesky = window.bluesky || {
   scan,