Fix model name to T2V-A14B and move theme to launch()

- Correct model ID from Wan2.2-T2V-14B to Wan2.2-T2V-A14B (the actual HF repo)
- Move theme param from Blocks() to launch() for Gradio 6.0 compat

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app.py

@@ -3,7 +3,7 @@ import gradio as gr
 HEADER = """
 # Wan 2.2 — Text to Video Generator
 
-Generate videos from text prompts using **Wan-AI/Wan2.2-T2V-14B**.
+Generate videos from text prompts using **Wan-AI/Wan2.2-T2V-A14B**.
 Powered by the **fal-ai** inference provider. Sign in with your Hugging Face account to get started.
 """
 
@@ -15,11 +15,7 @@ EXAMPLES = [
     "A steaming cup of coffee on a wooden table with rain falling outside the window",
 ]
 
-with gr.Blocks(
-    fill_height=True,
-    theme=gr.themes.Soft(primary_hue="indigo", secondary_hue="purple"),
-    title="Wan 2.2 Text-to-Video",
-) as demo:
+with gr.Blocks(fill_height=True, title="Wan 2.2 Text-to-Video") as demo:
 
     with gr.Sidebar():
         gr.Markdown("## Account")
@@ -30,13 +26,13 @@ with gr.Blocks(
         button = gr.LoginButton("Sign in")
         gr.Markdown("---")
         gr.Markdown(
-            "**Model:** [Wan-AI/Wan2.2-T2V-14B](https://huggingface.co/Wan-AI/Wan2.2-T2V-14B)\n\n"
+            "**Model:** [Wan-AI/Wan2.2-T2V-A14B](https://huggingface.co/Wan-AI/Wan2.2-T2V-A14B)\n\n"
             "**Provider:** fal-ai"
         )
 
     gr.Markdown(HEADER)
     gr.load(
-        "models/Wan-AI/Wan2.2-T2V-14B",
+        "models/Wan-AI/Wan2.2-T2V-A14B",
         accept_token=button,
         provider="fal-ai",
     )
@@ -47,4 +43,4 @@ with gr.Blocks(
         interactive=False,
     )
 
-demo.launch()
+demo.launch(theme=gr.themes.Soft(primary_hue="indigo", secondary_hue="purple"))