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/scraper/romset_dat_importer.py

@@ -2,7 +2,7 @@
 
 A DAT states, per set, the members an emulator version expects: name, size
 and CRC32. That is a recipe, and TorrentZip turns a recipe plus the ROM bytes
-into the exact archive. Profiles document a few hundred sets by hand; a DAT
+into the exact archive. Profiles document a few hundred sets by hand, while a DAT
 documents every set of one version at once.
 
 MAME ships its ``-listxml`` output as a release asset and FBNeo keeps its DATs
@@ -463,7 +463,7 @@ def main() -> int:
         nargs="?",
         const="latest",
         help="download upstream instead of using --pack "
-        "(a MAME tag such as mame0289; bare, the newest release)",
+        "(a MAME tag such as mame0289, or bare for the newest release)",
     )
     parser.add_argument(
         "--cache-dir", default=".cache/dats",