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/romm_scraper.py

@@ -120,7 +120,7 @@ SLUG_MAP: dict[str, str] = {
 # Mirrors are per file, not per core: a slug sharing a core with another reads
 # only the firmware that core needs for its own system. The Neo Geo slugs run
 # fbneo, as arcade does (index.ts:410-418), and fbneo boots every Neo Geo
-# game from neogeo.zip; the fixture gives it to arcade alone. None mirrors
+# game from neogeo.zip, but the fixture gives it to arcade alone. None mirrors
 # every file of the slug.
 FIRMWARE_MIRRORS: dict[str, dict[str, tuple[str, ...] | None]] = {
     "tg16": {"turbografx-cd": None},