fix(mkdocs): rebase cross-kind wiki links under directory URLs

Wiki pages linking to a sibling kind (for example ../lib/...) were emitted verbatim by MkDocs and, with use_directory_urls, resolved into a non-existent <kind>/<kind>/ path. Add a docforge-linkfix plugin (doc-forge 0.0.8) that rebases those links to the repository root.

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "doc-forge"
-version = "0.0.7"
+version = "0.0.8"
 description = "A renderer-agnostic Python documentation compiler"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -56,6 +56,9 @@ dependencies = [
 [project.scripts]
 doc-forge = "docforge.cli.main:main"
 
+[project.entry-points."mkdocs.plugins"]
+docforge-linkfix = "docforge.mkdocs_links:LinkFixPlugin"
+
 [project.optional-dependencies]
 mkdocs = [
     "mkdocs==1.6.1",