fix: add blank line after paragraphs before list items

Ensures consistent spacing by always adding a blank line after
standalone paragraphs before list items. This matches the behavior
already implemented for headings and improves readability.

The fix simplifies render_paragraph() to unconditionally set
_suppress_item_break = False, which ensures blank lines are added
before list items in all contexts (top-level and nested).

Also removes docs/ directory containing bug reproduction examples
as both bugs have been fixed.

Related to previous commit fixing blank lines after headings.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: claude

docs/bug1-example.md

@@ -83,13 +83,9 @@ def container(self, prefix: str, second_prefix: str = "") -> Generator[None, Non
         self._prefix, self._second_prefix = old_prefix, old_second_prefix
 
     def render_paragraph(self, element: block.Paragraph) -> str:
-        # Suppress item breaks on list items following a top-level paragraph.
-        if not self._prefix:
-            self._suppress_item_break = True
-        else:
-            # For paragraphs within list items, ensure proper spacing after multi-paragraph items
-            # This handles the case where a paragraph follows a BlankLine within a list item
-            self._suppress_item_break = False
+        # After rendering a paragraph, don't suppress the next item break
+        # This ensures proper spacing before list items that follow paragraphs
+        self._suppress_item_break = False
 
         children: Any = self.render_children(element)