docs: bring docforge docstrings and wiki to GSDFC standard

- fix GSDFC spec contradictions in __init__ docstring (parenthesized types, fenced-block rule) and sync generated README
- rewrite docstrings across loaders, models, nav, servers, renderers, cli; sync .pyi stubs
- add pydoclint (google style) gate to dev extras and pyproject config
- fix mcp nav resources doc:// -> docs://
- refresh docs/lib and docs/mcp, drop stale docforge/ duplicate group
- update wiki pages and add GSDFC + MCP guides under 05_development

docforge/renderers/mcp_renderer.py

@@ -49,7 +49,7 @@ class MCPRenderer:
             nav.append(
                 {
                     "module": module.path,
-                    "resource": f"doc://modules/{module.path}",
+                    "resource": f"docs://modules/{module.path}",
                 }
             )
 
@@ -101,7 +101,7 @@ class MCPRenderer:
                 Module instance to convert.
 
         Returns:
-            Dict:
+            dict:
                 Dictionary representing the module and its documented objects.
         """
         data: dict = {
@@ -124,7 +124,7 @@ class MCPRenderer:
                 Documentation object to convert.
 
         Returns:
-            Dict:
+            dict:
                 Dictionary describing the object and any nested members.
         """
         data: dict = {
@@ -149,7 +149,7 @@ class MCPRenderer:
         Serialize data to formatted JSON.
 
         Args:
-            data (Dict):
+            data (dict):
                 Dictionary to serialize.
 
         Returns: