sites: raw fetch gets site handlers - standard URL form, per-website cleanup and CHECK hints as a code registry, learn.microsoft.com first, plus a sites settings section (#200); 10.0.0-beta.3

Files changed:
- tools/chemenu/sites/ (registry, learn-microsoft handlers), web_capture.py, commands/raw/fetch.py, config_shapes.py
- tests, fixture, raw/CONTRACT.md, tools/README.md, docs, CHANGES.md, VERSION

Files changed:
- CHANGES.md
- VERSION
- docs/how-to/ingest-a-source.md
- docs/reference/commands/README.md
- docs/reference/commands/raw-material-and-uploads.md
- docs/reference/configuration.md
- raw/CONTRACT.md
- tools/CONTRACT.md
- tools/README.md
- tools/chemenu/commands/raw/fetch.py
- tools/chemenu/config_shapes.py
- tools/chemenu/reference_doc.py
- tools/chemenu/sites/__init__.py
- tools/chemenu/sites/learn_microsoft.py
- tools/chemenu/tests/fixtures/learn_microsoft/oslicense-module.html
- tools/chemenu/tests/test_config_shapes.py
- tools/chemenu/tests/test_sites.py
- tools/chemenu/web_capture.py

Co-Authored-By: Claude Code <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SnAJ7Z3CpVD3PRbN73QtU2

docs/reference/commands/README.md

@@ -79,7 +79,7 @@ Full records: [provenance.md](provenance.md)
 
 Full records: [raw-material-and-uploads.md](raw-material-and-uploads.md)
 
-- [`raw fetch`](raw-material-and-uploads.md#raw-fetch) - Capture a web page the user names into `incoming/`: the HTML as received plus a derived text, for `raw accept` to promote.
+- [`raw fetch`](raw-material-and-uploads.md#raw-fetch) - Capture a web page the user names into `incoming/`: the HTML as received plus a derived text, for `raw accept` to promote. Pages of a known website are fetched in the website's standard form and cleaned of its page furniture.
 - [`raw derive`](raw-material-and-uploads.md#raw-derive) - Derive reading text from a PDF, e-mail, Office file or web page in `incoming/`, or unpack a ZIP, and leave the original beside it, for `raw accept` to promote.
 - [`raw capture`](raw-material-and-uploads.md#raw-capture) - Capture documentation from a git repository into `incoming/<bundle>/`, with a manifest naming the repository, ref rule and commit, for `raw accept` to promote.
 - [`raw status`](raw-material-and-uploads.md#raw-status) - Report which captured bundles under `raw/` have fallen behind their repository, with each changed file as `A`/`M`/`D`.