raw derive PDF: Auszeichnungen auf ein Minimum - Struktur zuerst (Fließtext, Code, Tabellengitter, Vorlagen), ~~ ** * nur wo die Form eindeutig ist, Bildseiten-CHECK nur für Inhaltsbilder (#231); 10.1.0-beta.5

Files changed:
- CHANGES.md
- VERSION
- docs/how-to/ingest-a-source.md
- docs/reference/commands/raw-material-and-uploads.md
- raw/CONTRACT.md
- tools/CONTRACT.md
- tools/chemenu/commands/raw/derive.py
- tools/chemenu/filters/pdf.py
- tools/chemenu/filters/pdf_layout.py
- tools/chemenu/tests/binary_formats.py
- tools/chemenu/tests/test_raw_derive_binary.py

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

docs/how-to/ingest-a-source.md

@@ -46,11 +46,12 @@ pick a directory:
   sheets land beside the text as tab-separated files, with their formulas listed apart. A ZIP is
   unpacked into a folder instead, and a mail's attachments land beside it. A scanned PDF has no
   text to derive - the tool warns, and there is no OCR. A PDF with an outline gets it in the
-  header of the text, each entry with its page and the line where that page starts; text over a
-  coloured background, in another colour than the running text, or struck through is marked in
-  the text (`<mark data-farbe="gelb">`, `*…*`, `~~…~~`) with a legend in the header, and what a
-  colour means is for the reader to take from the document itself. Pages with pictures are
-  named in a `CHECK` line, because the pictures are not in the text.
+  header of the text, each entry with its page and the line where that page starts; struck-through
+  text, highlighted, bold or clearly differently coloured text, and italic text are marked in the
+  text (`~~…~~`, `**…**`, `*…*`) with a legend in the header, and what a colour means is for the
+  reader to take from the document itself. The tool marks sparingly, in running text and
+  not in code or tables. Pages with pictures or drawings that carry content are named in a `CHECK`
+  line, because the pictures are not in the text.
 - **A page behind a paywall or a login** is saved from your browser into `incoming/`, HTML only. The
   agent derives the same text from that file with `raw fetch --html`. For a website you read often,
   sign in once instead and let the wiki fetch it with your session: