docs: write prose without dashes or semicolons

Profiles, the wiki, comments, docstrings, command output and schema descriptions carried em-dashes, clause-joining semicolons, unicode arrows, box-drawing banners and check-mark glyphs. Each sentence was rewritten rather than having its character swapped. Hashes, paths, source_ref values and every cited file:line are unchanged, which a comparison of each parsed profile against the previous revision confirms.

validate_pr comments now say PASS and FAIL in words, and source_ref values in a profile's structured blocks render as code. test_prose_style fails if any of these comes back, in tracked files or in the generated site.

scripts/safeparse.py

@@ -102,7 +102,7 @@ def yaml_load(stream: str | TextIO) -> Any:
 def yaml_load_upstream(stream: str | TextIO) -> Any:
     """Parse a third party's YAML the way its own PyYAML code reads it.
 
-    Our files refuse a repeated key; a platform's file is data we transcribe,
+    Our files refuse a repeated key, but a platform's file is data we transcribe,
     and its code keeps the last value. Batocera 43.1's configgen-defaults.yml
     names rtcw's core twice, and refusing it stopped the rescrape.
     """