fix: bind the access-page bridge call and cover Download all fully

Extracting openModelAccessPage into a local detached it from its receiver, so a
host that reads this on the method would throw and the flow would fall to the
system-browser anchor, stranding provider cookies. Call it on the bridge object.

The Download all test drove a single downloadable model, so it could not tell
"downloads all" from "downloads the first". Drive two models and assert each is
dispatched once with its own arguments; reducing the component to the first
model now fails the call count.

Author: jaeone94

src/platform/missingModel/components/MissingModelCard.test.ts

@@ -359,15 +359,29 @@ describe('MissingModelCard (OSS)', () => {
 
   it('routes Download all through the shared missing-model download handler', async () => {
     mountCard({
-      missingModelGroups: [makeGroup({ withDownloadUrls: true })]
+      missingModelGroups: [
+        makeGroup({
+          withDownloadUrls: true,
+          modelNames: ['first.safetensors', 'second.safetensors']
+        })
+      ]
     })
 
     await userEvent.click(screen.getByTestId('missing-model-download-all'))
 
+    expect(mockDownloadModel).toHaveBeenCalledTimes(2)
+    expect(mockDownloadModel).toHaveBeenCalledWith(
+      {
+        name: 'first.safetensors',
+        url: 'https://huggingface.co/comfy/test/resolve/main/first.safetensors',
+        directory: 'checkpoints'
+      },
+      {}
+    )
     expect(mockDownloadModel).toHaveBeenCalledWith(
       {
-        name: 'model.safetensors',
-        url: 'https://huggingface.co/comfy/test/resolve/main/model.safetensors',
+        name: 'second.safetensors',
+        url: 'https://huggingface.co/comfy/test/resolve/main/second.safetensors',
         directory: 'checkpoints'
       },
       {}

src/platform/missingModel/composables/useMissingModelDownload.ts

@@ -30,10 +30,10 @@ export function useMissingModelDownload() {
   // anchor fallback inside Electron hits shell.openExternal and strands the
   // provider cookies in the system browser.
   async function openModelAccessPage(repoUrl: string): Promise<void> {
-    const openInHost = window.__comfyDesktop2?.openModelAccessPage
-    if (openInHost) {
+    const bridge = window.__comfyDesktop2
+    if (bridge?.openModelAccessPage) {
       try {
-        if ((await openInHost(repoUrl)) === true) return
+        if ((await bridge.openModelAccessPage(repoUrl)) === true) return
       } catch (error: unknown) {
         console.error('Failed to open model access page in Desktop:', error)
       }