S8 fix - help centre glossary classes leaked onto the Issue (hold) status pill

help.js injects its stylesheet on every page, and its glossary pills used bare
class selectors (.pill-draft ... .pill-hold). The creator's Issue (hold) status
radio also carries the class pill-hold, so the injected rule painted that radio
error-red at ALL times - selected or not. Reported by Nick ('why is the issues
(hold) button illuminated at all times'), 2026-08-20.

Pre-existing, not from this branch: help.js has had the bare selectors since
the login-portal commit, and the creator's pill-hold class predates the R2
branch. Every glossary rule is now scoped to .ui-help-pill.pill-*, which the
glossary markup already carries. Verified live: unselected, the hold pill's
computed style now matches its neighbours exactly; selected, it is still the
red fill; the glossary's own Hold pill keeps its tint. helptip_check gains the
pin (13 -> 14): no bare .pill-* selector in help.js, ever again.

Item: S8 (the help component's app-wide surface).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/reference/file-map.md

@@ -302,7 +302,7 @@ Wave 9 adds these:
 python tests/export_check.py         # CR-008/CR-017 - export walk + hours guard   20 checks
 python tests/sample_check.py         # S7 - one sample affordance, confirmed+fenced 10 checks
 python tests/icon_check.py           # S6 - one icon system, no emoji, mapped        5 checks
-python tests/helptip_check.py        # C1/S8 - tips by keyboard+touch, audit greps  13 checks
+python tests/helptip_check.py        # C1/S8 - tips by keyboard+touch, audit greps  14 checks
 python tests/mobile_check.py         # C2 - all 7 pages at 390px, targets + fit    24 checks
 python tests/archived_check.py       # D7 - archived projects, admins only, frozen 15 checks
 python tests/color_check.py          # C4 - zero literals outside theme-light      5 checks