burn-down: R-423 site page walk (exemption dropped); STATUS Part C list (45 rows for the operator); REPORT; register 336 -> 291 (0 opened, 45 closed)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

scripts/test_gate_decoys.py

@@ -53,6 +53,7 @@ COVERS = {
                         "(2026-10-03) an old-shape row under the new header, a near-miss category, an "
                         "old rank tag as Sev, an undefined state word, and a pipe outside backticks"),
     "decoy-coverage":  "a gate registered in a runner with no decoy and no exemption (its red-proof)",
+    "site":            "R-423: a NEW page under website/ that PAGES does not list (the gate used to scan 7 of 9)",
     "script-tests":    ("R-885: FIVE cases in scripts/test_script_tests_gate.py, run from here: a suite that PRINTS "
                         "OK and exits 1 (label without fact), a failing suite three levels deep (scope is a walk), "
                         "an empty scripts/ tree (checked nothing), the genuine article (must pass), the nested mark"),
@@ -371,6 +372,12 @@ else:
     _n = _gq.stdout.strip().splitlines()[-1] if _gq.stdout.strip() else "?"
     print("  ok  %-20s %s" % ("guide-quote", _n))
 
+# ── site (R-423) ─────────────────────────────────────────────────────────────────────────────────
+# A page that exists but is not in PAGES. The content is a perfectly valid page, so only the scope rule can convict.
+decoy("site/unlisted-page", "site_gates.py",
+      plant_file(os.path.join(ROOT, "website", "zz-r423-decoy.html"),
+                 u"\ufeff<!DOCTYPE html><html><body><nav></nav><footer></footer></body></html>\n"))
+
 # ── script-tests (R-885) ─────────────────────────────────────────────────────────────────────────
 #
 # Its decoys are whole fake repos, so they live in their own file and are RUN from here (guide-quote's shape).