chore(release): 0.0.3

Squash-merge lib-standardisation: adopt repo standards across packaging,
tooling, docs, and CI.

- standardize pyproject.toml (canonical packaging, lint config, extras, GSDFC pydoclint)
- add py.typed marker, modernize type hints and Google-style docstrings
- nest generated docs under docs/lib and docs/mcp; add hand-written wiki
- adopt standard Type A PyPI CI pipeline (tag==version guard + quality gate)
- promote generated CHANGELOG.md; bump version to 0.0.3

docforge.nav.yml

@@ -1,16 +1,31 @@
-home: index.md
+home: lib/index.md
 groups:
   Core API:
-    - core/index.md
-    - core/content.md
-    - core/parser.md
-    - core/scraper.md
+    - lib/core/index.md
+    - lib/core/content.md
+    - lib/core/parser.md
+    - lib/core/scraper.md
   HTML Handling:
-    - html/index.md
-    - html/parser.md
-    - html/scraper.md
+    - lib/html/index.md
+    - lib/html/parser.md
+    - lib/html/scraper.md
   PDF Handling:
-    - pdf/index.md
-    - pdf/client.md
-    - pdf/parser.md
-    - pdf/scraper.md
+    - lib/pdf/index.md
+    - lib/pdf/client.md
+    - lib/pdf/parser.md
+    - lib/pdf/scraper.md
+  CSV Handling:
+    - lib/csv/index.md
+    - lib/csv/client.md
+    - lib/csv/parser_base.md
+    - lib/csv/parser.md
+    - lib/csv/scraper.md
+  XLSX Handling:
+    - lib/xlsx/index.md
+    - lib/xlsx/client.md
+    - lib/xlsx/parser_base.md
+    - lib/xlsx/parser.md
+    - lib/xlsx/scraper.md
+icon:
+  logo: material/book-open-page-variant
+  repo: fontawesome/brands/github