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/models/project.py

@@ -6,6 +6,14 @@ Documentation model representing a project.
 This module defines the `Project` class, the top-level container used by
 doc-forge to represent a documented codebase. A `Project` aggregates multiple
 modules and provides access to them through a unified interface.
+
+---
+
+Notes:
+    - Modules are keyed by their dotted import path.
+    - Objects are renderer-agnostic; the same model feeds every renderer.
+
+---
 """
 
 from collections.abc import Iterable
@@ -24,7 +32,7 @@ class Project:
         name (str):
             Name of the project.
 
-        modules (Dict[str, Module]):
+        modules (dict[str, Module]):
             Mapping of module paths to `Module` instances.
     """
 
@@ -35,6 +43,14 @@ class Project:
         Args:
             name (str):
                 Name used to identify the documentation project.
+
+        Example:
+            Create a project and register a module:
+
+                ```python
+                project = Project("mypackage")
+                project.add_module(module)
+                ```
         """
         self.name = name
         self.modules: dict[str, Module] = {}