Add root index generation

scripts/generate_reports.py

@@ -128,6 +128,26 @@ def _generate_all_domains(interval: str) -> None:
         _generate_interval(interval, domain)
 
 
+def _generate_root_index() -> None:
+    """Render the top-level index listing all intervals and domains."""
+    intervals = [p.name for p in OUTPUT_DIR.iterdir() if p.is_dir() and p.name != "domains"]
+    intervals.sort()
+
+    domains_dir = OUTPUT_DIR / "domains"
+    domains: List[str] = []
+    if domains_dir.is_dir():
+        domains = [p.name for p in domains_dir.iterdir() if p.is_dir()]
+        domains.sort()
+
+    env = Environment(loader=FileSystemLoader(TEMPLATE_DIR))
+    template = env.get_template("index.html")
+
+    OUTPUT_DIR.mkdir(parents=True, exist_ok=True)
+    out_path = OUTPUT_DIR / "index.html"
+    out_path.write_text(template.render(intervals=intervals, domains=domains))
+    typer.echo(f"Generated root index at {out_path}")
+
+
 @app.command()
 def hourly(
     domain: Optional[str] = typer.Option(
@@ -192,5 +212,11 @@ def monthly(
         _generate_interval("monthly", domain)
 
 
+@app.command()
+def index() -> None:
+    """Generate the root index page linking all reports."""
+    _generate_root_index()
+
+
 if __name__ == "__main__":
     app()