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/validate_schemas.py

@@ -134,7 +134,7 @@ def _validate_pack_manifests(dist: Path) -> list[str]:
             return _scan_pack_manifests(dist)
     except ArtifactLockBusy:
         print(
-            f"note: {dist.name} is being written; skipping pack manifests",
+            f"note: {dist.name} is being written, skipping pack manifests",
             file=sys.stderr,
         )
         return []
@@ -340,7 +340,7 @@ def _semantic_install_checks(path: Path, manifest: dict) -> list[str]:
 def unchecked_formats() -> list[str]:
     """Formats the schemas declare that this jsonschema install cannot check.
 
-    date-time and uri need the format extras; without them the ten format
+    date-time and uri need the format extras. Without them the ten format
     constraints of the published schemas were accepted unread.
     """
     used = {