feat: add upgrade modal for model upload when private models disabled (#7124)

## Summary
Adds a dedicated upgrade modal that appears when users without private
models access try to upload models, providing a clear path to upgrade
their subscription.

## Changes
- **New upgrade modal**: Created `UploadModelUpgradeModal` with
dedicated body, header, and footer components
- **Conditional rendering**: Modified `AssetBrowserModal` to show
upgrade modal when `privateModelsEnabled` flag is false
- **Subscription integration**: Connected upgrade flow to existing
subscription system via `showSubscriptionDialog()`
- **Localization**: Added localization keys for upgrade messaging

## Review Focus
- Conditional logic in `AssetBrowserModal.handleUploadClick()` based on
feature flags
- Component naming consistency (all upgrade-related components prefixed
with `UploadModelUpgrade`)
- Footer component refactoring maintains existing upload wizard behavior

🤖 Generated with [Claude Code](https://claude.com/claude-code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7124-feat-add-upgrade-modal-for-model-upload-when-private-models-disabled-2be6d73d36508147b72eea8a1d6ab772)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>

src/composables/useFeatureFlags.ts

@@ -11,7 +11,8 @@ export enum ServerFeatureFlag {
   MAX_UPLOAD_SIZE = 'max_upload_size',
   MANAGER_SUPPORTS_V4 = 'extension.manager.supports_v4',
   MODEL_UPLOAD_BUTTON_ENABLED = 'model_upload_button_enabled',
-  ASSET_UPDATE_OPTIONS_ENABLED = 'asset_update_options_enabled'
+  ASSET_UPDATE_OPTIONS_ENABLED = 'asset_update_options_enabled',
+  PRIVATE_MODELS_ENABLED = 'private_models_enabled'
 }
 
 /**
@@ -47,6 +48,13 @@ export function useFeatureFlags() {
           false
         )
       )
+    },
+    get privateModelsEnabled() {
+      // Check remote config first (from /api/features), fall back to websocket feature flags
+      return (
+        remoteConfig.value.private_models_enabled ??
+        api.getServerFeature(ServerFeatureFlag.PRIVATE_MODELS_ENABLED, false)
+      )
     }
   })
 

src/locales/en/main.json

@@ -2121,6 +2121,8 @@
     "modelUploaded": "Model imported! 🎉",
     "findInLibrary": "Find it in the {type} section of the models library.",
     "finish": "Finish",
+    "upgradeToUnlockFeature": "Upgrade to unlock this feature",
+    "upgradeFeatureDescription": "This feature is only available with Creator or Pro plans.",
     "allModels": "All Models",
     "allCategory": "All {category}",
     "unknown": "Unknown",

src/platform/assets/components/UploadModelUpgradeModal.vue

@@ -0,0 +1,30 @@
+<template>
+  <div
+    class="flex flex-col justify-between gap-10 p-4 border-t border-border-default w-auto max-w-[min(500px,90vw)]"
+  >
+    <UploadModelUpgradeModalBody />
+
+    <UploadModelUpgradeModalFooter
+      @close="handleClose"
+      @subscribe="handleSubscribe"
+    />
+  </div>
+</template>
+
+<script setup lang="ts">
+import UploadModelUpgradeModalBody from '@/platform/assets/components/UploadModelUpgradeModalBody.vue'
+import UploadModelUpgradeModalFooter from '@/platform/assets/components/UploadModelUpgradeModalFooter.vue'
+import { useSubscription } from '@/platform/cloud/subscription/composables/useSubscription'
+import { useDialogStore } from '@/stores/dialogStore'
+
+const dialogStore = useDialogStore()
+const { showSubscriptionDialog } = useSubscription()
+
+function handleClose() {
+  dialogStore.closeDialog({ key: 'upload-model-upgrade' })
+}
+
+function handleSubscribe() {
+  showSubscriptionDialog()
+}
+</script>

src/platform/assets/components/UploadModelUpgradeModalBody.vue

@@ -0,0 +1,9 @@
+<template>
+  <div
+    class="flex flex-1 flex-col items-center justify-center text-base text-muted-foreground"
+  >
+    <p class="m-0 max-w-md">
+      {{ $t('assetBrowser.upgradeFeatureDescription') }}
+    </p>
+  </div>
+</template>

src/platform/assets/components/UploadModelUpgradeModalFooter.vue

@@ -0,0 +1,34 @@
+<template>
+  <div class="flex flex-wrap justify-end gap-2 w-full">
+    <a
+      href="https://blog.comfy.org/p/comfy-cloud-new-features-and-pricing"
+      target="_blank"
+      rel="noopener noreferrer"
+      class="text-muted-foreground mr-auto underline flex items-center gap-2"
+    >
+      <i class="icon-[lucide--external-link]" />
+      <span>{{ $t('g.learnMore') }}</span>
+    </a>
+    <TextButton
+      :label="$t('g.close')"
+      type="transparent"
+      size="md"
+      @click="emit('close')"
+    />
+    <TextButton
+      :label="$t('subscription.required.subscribe')"
+      type="secondary"
+      size="md"
+      @click="emit('subscribe')"
+    />
+  </div>
+</template>
+
+<script setup lang="ts">
+import TextButton from '@/components/button/TextButton.vue'
+
+const emit = defineEmits<{
+  close: []
+  subscribe: []
+}>()
+</script>

src/platform/assets/components/UploadModelUpgradeModalHeader.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="flex items-center gap-2 p-4 font-bold">
+    <span>{{ $t('assetBrowser.upgradeToUnlockFeature') }}</span>
+  </div>
+</template>

src/platform/assets/composables/useModelUpload.ts

@@ -1,6 +1,8 @@
 import { useFeatureFlags } from '@/composables/useFeatureFlags'
 import UploadModelDialog from '@/platform/assets/components/UploadModelDialog.vue'
 import UploadModelDialogHeader from '@/platform/assets/components/UploadModelDialogHeader.vue'
+import UploadModelUpgradeModal from '@/platform/assets/components/UploadModelUpgradeModal.vue'
+import UploadModelUpgradeModalHeader from '@/platform/assets/components/UploadModelUpgradeModalHeader.vue'
 import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
 import { useDialogStore } from '@/stores/dialogStore'
 import type { UseAsyncStateReturn } from '@vueuse/core'
@@ -14,22 +16,38 @@ export function useModelUpload(
   const isUploadButtonEnabled = computed(() => flags.modelUploadButtonEnabled)
 
   function showUploadDialog() {
-    dialogStore.showDialog({
-      key: 'upload-model',
-      headerComponent: UploadModelDialogHeader,
-      component: UploadModelDialog,
-      props: {
-        onUploadSuccess: async () => {
-          await execute?.()
+    if (!flags.privateModelsEnabled) {
+      // Show upgrade modal if private models are disabled
+      dialogStore.showDialog({
+        key: 'upload-model-upgrade',
+        headerComponent: UploadModelUpgradeModalHeader,
+        component: UploadModelUpgradeModal,
+        dialogComponentProps: {
+          pt: {
+            header: 'py-0! pl-0!',
+            content: 'p-0!'
+          }
         }
-      },
-      dialogComponentProps: {
-        pt: {
-          header: 'py-0! pl-0!',
-          content: 'p-0!'
+      })
+    } else {
+      // Show regular upload modal
+      dialogStore.showDialog({
+        key: 'upload-model',
+        headerComponent: UploadModelDialogHeader,
+        component: UploadModelDialog,
+        props: {
+          onUploadSuccess: async () => {
+            await execute?.()
+          }
+        },
+        dialogComponentProps: {
+          pt: {
+            header: 'py-0! pl-0!',
+            content: 'p-0!'
+          }
         }
-      }
-    })
+      })
+    }
   }
   return { isUploadButtonEnabled, showUploadDialog }
 }

src/platform/remoteConfig/types.ts

@@ -36,4 +36,5 @@ export type RemoteConfig = {
   telemetry_disabled_events?: TelemetryEventName[]
   model_upload_button_enabled?: boolean
   asset_update_options_enabled?: boolean
+  private_models_enabled?: boolean
 }