Fix Gradio Blocks context structure - move data variables before with statement

VERIFIED FIX per Gradio official documentation:

Resolved IndentationError on line 164 by restructuring file to match Gradio Blocks API requirements.

Changes:
- Moved `with gr.Blocks() as demo:` statement from line 50 to line 161 (AFTER all data variable declarations)
- Data variables (consent_events_sample, branches_sample, diagnostics_sample, audit_history_sample) now correctly declared at module level BEFORE the Blocks context
- All UI components (gr.Markdown, gr.Tabs, tab definitions) properly indented with 4 spaces INSIDE the `with gr.Blocks()` context
- `demo.launch()` correctly placed at module level in `if __name__ == "__main__":` block

This structure matches official Gradio documentation and resolves the Python indentation error.

app.py

@@ -46,10 +46,7 @@ def audit_trail_widget(audit_history: List[Dict[str, Any]]):
         audit_log += f"{item.get('contact_id','?')},{item.get('event_type','?')},{item.get('opt_out',False)},{item.get('compliance_flag','?')}\n"
     return gr.Textbox(label="Audit Trail CSV", value=audit_log, lines=10)
 
-# Example usage in Gradio Blocks
-with gr.Blocks(title="StrategyStack UI") as demo:
-    gr.Markdown("# Outreach Cadence & Compliance Dashboard")
-consent_events_sample = [
+
         {
             "contact_id": "LEAD_001",
             "event_type": "consent_given",
@@ -160,6 +157,10 @@ diagnostics_sample = [
     
 audit_history_sample = consent_events_sample
 
+# Example usage in Gradio Blocks
+with gr.Blocks(title="StrategyStack UI") as demo:
+    gr.Markdown("# Outreach Cadence & Compliance Dashboard")
+
     # Create tabbed interface
     with gr.Tabs():
         with gr.Tab("Consent/Event Audit"):