Read this board's subjects rather than counting them beside the switch

.github/workflows/shared-hygiene.yml

@@ -12,12 +12,29 @@
 # standardising by losing coverage, so the local gate loses a rule only once the
 # shared one is shown to cover it, one rule at a time.
 #
-# THE SUBJECT RULE IS OFF. This board writes the issue number in the body rather
-# than in the subject, which is what its own gate reads: of the last fifty-two
-# authored subjects here not one is in the square brackets the fleet rule wants,
-# and the twelve most recent carry no reference at all. Switching that one rule
-# off says the board does not meet it yet. Not calling the check at all would
-# say nothing.
+# THE SUBJECT RULE IS OFF, AND THIS BOARD'S OWN GATE READS THE BODY. Whether the
+# subjects here carry the reference the fleet rule wants is a count, so it is
+# read rather than written down:
+#
+#     git log origin/main --no-merges --format='%s' -52 | grep -c '\[#[0-9]'
+#
+# Switching that one rule off says the board does not meet it yet. Not calling
+# the check at all would say nothing.
+#
+# THE NUMBERS THAT STOOD HERE ARE DELETED RATHER THAN CORRECTED. This paragraph
+# said that of the last fifty-two authored subjects not one was in those
+# brackets, and that the twelve most recent carried no reference at all. The
+# first was true on 2026-08-23, when it was written, and stopped being true on
+# 2026-09-05, when the first bracketed subject landed. The second was refuted at
+# the moment it was written: of the twelve most recent then, the one carrying a
+# reference was the commit that wrote this sentence. No route on this board
+# reads a count in a comment, so both stood unanswered from the day they were
+# written, and the command above stands in their place.
+#
+# WHAT WOULD DECIDE THE INPUT IS NOT IN THIS FILE. The called workflow is pinned
+# by hash in another repository, and which subject it reads is not read here, so
+# turning the rule on needs that answer beside the count above rather than the
+# sentence this paragraph replaced.
 #
 # PINNED BY HASH, NOT BY BRANCH. A moving reference would let the called
 # repository change what executes here without anybody reviewing it, and the