EchoScript : app.py, Bug Fixing for Cascading language filtering, Transcript caching, Per-language translation caching, Tab visibility

app.py

@@ -302,6 +302,8 @@ with gr.Blocks(title="EchoScript") as demo:
 # EchoScript
 
 **Upload Audio → Generate Canonical Transcript → Preview Results → Generate Outputs → Copy / Download**
+
+<sub>build: 2026-06-26 19:40 UTC &middot; cascading-languages + caching</sub>
         """
     )
 
@@ -345,6 +347,11 @@ with gr.Blocks(title="EchoScript") as demo:
                 label="Outputs",
             )
 
+            api_key_input.input(
+                fn=_on_key_or_source_change,
+                inputs=[api_key_input, language_input, outputs_input],
+                outputs=[outputs_input],
+            )
             api_key_input.change(
                 fn=_on_key_or_source_change,
                 inputs=[api_key_input, language_input, outputs_input],