Add Type B slide pipeline and recipe rendering updates

src/renderer.py

@@ -367,7 +367,7 @@ def render_multi_page(layout_concept: dict[str, Any]) -> str:
             "page_number": page_idx + 1,
         })
 
-    base_template = env.get_template("slide-base.html")
+    base_template = env.get_template("blocks/slide-base.html")
     html = base_template.render(
         slide_title=title,
         pages=pages_rendered,
@@ -425,7 +425,7 @@ def render_slide(layout: dict[str, Any]) -> str:
 
     blocks_grouped = _group_blocks_by_area(blocks_raw)
 
-    base_template = env.get_template("slide-base.html")
+    base_template = env.get_template("blocks/slide-base.html")
     html = base_template.render(
         slide_title=layout.get("title", ""),
         pages=[{