fix(hub-ui): read import.meta.url through a variable so Vite doesn't inline the module

Vite's lib build recognizes the literal `new URL('...', import.meta.url)`
asset pattern and was inlining the embedded/standalone entry's own source
as a `data:video/mp2t` URL — so at runtime the dock resolved its hub base
from that data URL instead of the served script URL, and connection-meta
discovery failed. Assigning import.meta.url to a variable first sidesteps
the pattern matcher; the base stays the real runtime URL.

Author: antfubot

packages/hub-ui/src/client/embedded/index.ts

@@ -25,7 +25,13 @@ async function mountDock(): Promise<void> {
   // The hub base is wherever this script was served from: the page origin's
   // copy first (the common same-origin mount), the serving origin second
   // (a host page on another backend loading the script cross-origin).
-  const baseUrl = new URL('./', import.meta.url)
+  //
+  // Read import.meta.url through a variable: Vite's lib build rewrites the
+  // literal `new URL('...', import.meta.url)` asset pattern (inlining the
+  // module as a `data:` URL), which would make the base the data URL instead
+  // of the runtime script URL.
+  const moduleUrl = import.meta.url
+  const baseUrl = new URL('./', moduleUrl)
   const rpc = await getDevframeRpcClient({
     baseURL: [baseUrl.pathname, baseUrl.href],
     // The dock ships its own authorization view; skip devframe's native

packages/hub-ui/src/client/standalone/main.ts

@@ -20,9 +20,12 @@ watchEffect(() => {
 
 async function main(): Promise<void> {
   // Served at the hub base with relative assets: `./__connection.json`
-  // resolves against the page URL first, the module URL second.
+  // resolves against the page URL first, the module URL second. Read
+  // import.meta.url through a variable so Vite's build doesn't rewrite the
+  // literal `new URL('...', import.meta.url)` asset pattern into a data URL.
+  const moduleUrl = import.meta.url
   const rpc = await getDevframeRpcClient({
-    baseURL: ['./', new URL('./', import.meta.url).href],
+    baseURL: ['./', new URL('./', moduleUrl).href],
     simpleAuth: false,
   })