diff --git a/.trinity/seals/claw_ClawGates.json b/.trinity/seals/claw_ClawGates.json
index 13c30cb979..9beed58429 100644
--- a/.trinity/seals/claw_ClawGates.json
+++ b/.trinity/seals/claw_ClawGates.json
@@ -7,23 +7,23 @@
     }
   ],
   "config": "gen=c,rust,verilog,zig;tests=zig",
-  "gen_hash_c": "sha256:ce0738bca2f5180ee4534277adba4c639bfbcd3f996d67aed18f8b11c046f683",
-  "gen_hash_rust": "sha256:39159b221533f17be9fb1ff4eb4ce7354436fb594275513c4e435fd1b2824df2",
-  "gen_hash_verilog": "sha256:e41e2a573f0a4bab0fe16018391059a845bd636c600364c4fdb011aa2ae6f516",
-  "gen_hash_zig": "sha256:9b9d65386abd4c7eaffac3508cd2881b01863d0769d2f28066cc1cd51b892dfc",
+  "gen_hash_c": "sha256:723a598914ee23e57be303db50d42531cc4e060b0dc2f4cb56234e53ef1f545c",
+  "gen_hash_rust": "sha256:a959e6e61dbce9d00050932baed8e74633a5ce6e4a6dc376f9ee3c5494445473",
+  "gen_hash_verilog": "sha256:27185ecb4aa7e109f3c9fb7280863ac2fff7f4262bf8b02b9c3177612079580f",
+  "gen_hash_zig": "sha256:d96163a4182c592c121c7cf497d5770791f41fb7fb382300b2d79dee3ef3c79e",
   "module": "ClawGates",
   "ring": 12,
   "seal_schema": 2,
-  "sealed_at": "2026-10-18T21:37:24Z",
+  "sealed_at": "2026-10-18T22:24:12Z",
   "sealed_by": "t27c-bootstrap@0.5.2",
-  "spec_hash": "sha256:96a1d6b79b1832f7ee063270a9c851793fe1100b7981d6d3985c881b61e60bcb",
+  "spec_hash": "sha256:1976cf9af48f8799d5d7584648c3cca97ca35d0ccd31b5019b0a1fed909f1e90",
   "spec_path": "specs/claw/gates.t27",
   "tests": {
     "failed": 0,
     "failing": [],
     "forced": false,
-    "passed": 20,
-    "total": 20,
+    "passed": 23,
+    "total": 23,
     "vacuous": 0
   },
   "toolchain": {
diff --git a/gen/c/claw/gates.c b/gen/c/claw/gates.c
index 37b48b03c5..a1f4491a12 100644
--- a/gen/c/claw/gates.c
+++ b/gen/c/claw/gates.c
@@ -53,8 +53,11 @@ uint8_t class_of(const char* name, size_t name_len);
 bool is_blocking(const char* name, size_t name_len);
 const char* events_of(const char* name, size_t name_len);
 uint32_t count_class(uint8_t c);
+bool rows_filled(const char* names[static 67], const char* events[static 67]);
 bool every_row_filled(void);
+bool names_unique_in(const char* names[static 67], size_t lens[static 67]);
 bool all_names_unique(void);
+bool classes_known(uint8_t cl[static 67]);
 bool all_classes_known(void);
 size_t line_len(uint8_t* dir_text, size_t dir_len, size_t start);
 bool line_eq_name(uint8_t* dir_text, size_t start, size_t len, const char* name, size_t name_len);
@@ -104,22 +107,26 @@ uint32_t count_class(uint8_t c) {
     return n;
 }
 
-bool every_row_filled(void) {
+bool rows_filled(const char* names[static 67], const char* events[static 67]) {
     for (size_t i = 0; i < 67; i++) {
-        if ((NAMES[i] == "")) {
+        if ((names[i] == "")) {
             return false;
         }
-        if ((EVENTS[i] == "")) {
+        if ((events[i] == "")) {
             return false;
         }
     }
     return true;
 }
 
-bool all_names_unique(void) {
+bool every_row_filled(void) {
+    return rows_filled(NAMES, EVENTS);
+}
+
+bool names_unique_in(const char* names[static 67], size_t lens[static 67]) {
     for (size_t i = 0; i < 67; i++) {
         for (size_t j = (i + 1); j < 67; j++) {
-            if (str_eq(NAMES[i], NAME_LENS[i], NAMES[j], NAME_LENS[j])) {
+            if (str_eq(names[i], lens[i], names[j], lens[j])) {
                 return false;
             }
         }
@@ -127,11 +134,15 @@ bool all_names_unique(void) {
     return true;
 }
 
-bool all_classes_known(void) {
+bool all_names_unique(void) {
+    return names_unique_in(NAMES, NAME_LENS);
+}
+
+bool classes_known(uint8_t cl[static 67]) {
     for (size_t i = 0; i < 67; i++) {
-        if ((CLASSES[i] != G_BLOCKING)) {
-            if ((CLASSES[i] != G_SOFT)) {
-                if ((CLASSES[i] != G_REPORTING)) {
+        if ((cl[i] != G_BLOCKING)) {
+            if ((cl[i] != G_SOFT)) {
+                if ((cl[i] != G_REPORTING)) {
                     return false;
                 }
             }
@@ -140,6 +151,10 @@ bool all_classes_known(void) {
     return true;
 }
 
+bool all_classes_known(void) {
+    return classes_known(CLASSES);
+}
+
 size_t line_len(uint8_t* dir_text, size_t dir_len, size_t start) {
     size_t i = start;
     while ((i < dir_len)) {
@@ -588,6 +603,63 @@ void test_coverage_report_lines_are_exact(void) {
     assert((buf_has(&out, w, "G_REPORTING n=2 blocking=false e.g. auto-merge-ready-prs, queen-publish\n", 72) == true));
 }
 
+void test_a_hole_in_either_column_fails_the_filled_check(void) {
+    assert((rows_filled(NAMES, EVENTS) == true));
+    const char* n[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        n[i] = NAMES[i];
+    }
+    n[66] = "";
+    assert((rows_filled(n, EVENTS) == false));
+    const char* e[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        e[i] = EVENTS[i];
+    }
+    e[0] = "";
+    assert((rows_filled(NAMES, e) == false));
+}
+
+void test_a_repeated_name_is_caught_wherever_it_sits(void) {
+    const char* n[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        n[i] = NAMES[i];
+    }
+    size_t l[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        l[i] = NAME_LENS[i];
+    }
+    n[5] = n[4];
+    l[5] = l[4];
+    assert((names_unique_in(n, l) == false));
+    const char* m[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        m[i] = NAMES[i];
+    }
+    size_t k[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        k[i] = NAME_LENS[i];
+    }
+    m[66] = m[0];
+    k[66] = k[0];
+    assert((names_unique_in(m, k) == false));
+}
+
+void test_a_class_outside_the_three_is_unknown(void) {
+    assert((classes_known(CLASSES) == true));
+    uint8_t c[67] = {0};
+    for (size_t i = 0; i < 67; i++) {
+        c[i] = CLASSES[i];
+    }
+    c[66] = G_UNKNOWN;
+    assert((classes_known(c) == false));
+    c[66] = G_BLOCKING;
+    assert((classes_known(c) == true));
+    c[66] = G_SOFT;
+    assert((classes_known(c) == true));
+    c[66] = G_REPORTING;
+    assert((classes_known(c) == true));
+}
+
 
 /* -------------------------------------------------------
    Test runner (compile with -DT27_TEST_MAIN to execute)
@@ -616,7 +688,10 @@ int main(void) {
     test_coverage_report_carries_every_class();
     test_audit_tail_line_matches_the_count();
     test_coverage_report_lines_are_exact();
-    printf("All %d tests passed.\n", 20);
+    test_a_hole_in_either_column_fails_the_filled_check();
+    test_a_repeated_name_is_caught_wherever_it_sits();
+    test_a_class_outside_the_three_is_unknown();
+    printf("All %d tests passed.\n", 23);
     return 0;
 }
 #endif /* T27_TEST_MAIN */
diff --git a/specs/claw/gates.t27 b/specs/claw/gates.t27
index f0b0256d33..1ede4a9be4 100644
--- a/specs/claw/gates.t27
+++ b/specs/claw/gates.t27
@@ -149,30 +149,42 @@ pub fn count_class(c: u8) -> u32 {
     return n;
 }
 
-/// Every row has a name and a recorded trigger set.
-pub fn every_row_filled() -> bool {
+/// Every row of a table shaped like this one has a name and a recorded trigger set. The
+/// columns are parameters so a test can hand in a copy with one hole: a check that only reads
+/// the constant table can never fail, and no mutant of it can die (#10686).
+pub fn rows_filled(names: [67]str, events: [67]str) -> bool {
     for i in 0..67 {
-        if NAMES[i] == "" { return false; }
-        if EVENTS[i] == "" { return false; }
+        if names[i] == "" { return false; }
+        if events[i] == "" { return false; }
     }
     return true;
 }
 
-pub fn all_names_unique() -> bool {
+/// Every row of the inventory has a name and a recorded trigger set.
+pub fn every_row_filled() -> bool {
+    return rows_filled(NAMES, EVENTS);
+}
+
+/// No name appears twice in a name column (with its length column).
+pub fn names_unique_in(names: [67]str, lens: [67]usize) -> bool {
     for i in 0..67 {
         for j in (i + 1)..67 {
-            if str_eq(NAMES[i], NAME_LENS[i], NAMES[j], NAME_LENS[j]) { return false; }
+            if str_eq(names[i], lens[i], names[j], lens[j]) { return false; }
         }
     }
     return true;
 }
 
-/// Every class literal in CLASSES is one of the three real classes.
-pub fn all_classes_known() -> bool {
+pub fn all_names_unique() -> bool {
+    return names_unique_in(NAMES, NAME_LENS);
+}
+
+/// Every class in a class column is one of the three real classes.
+pub fn classes_known(cl: [67]u8) -> bool {
     for i in 0..67 {
-        if CLASSES[i] != G_BLOCKING {
-            if CLASSES[i] != G_SOFT {
-                if CLASSES[i] != G_REPORTING {
+        if cl[i] != G_BLOCKING {
+            if cl[i] != G_SOFT {
+                if cl[i] != G_REPORTING {
                     return false;
                 }
             }
@@ -181,6 +193,11 @@ pub fn all_classes_known() -> bool {
     return true;
 }
 
+/// Every class literal in CLASSES is one of the three real classes.
+pub fn all_classes_known() -> bool {
+    return classes_known(CLASSES);
+}
+
 // ---------------------------------------------------------------------------
 // The audit law (T2, Refs #9271): does the live .github/workflows directory
 // agree with this inventory? The runner the gate-topology workflow compiles
@@ -597,3 +614,47 @@ test coverage_report_lines_are_exact {
     assert buf_has(&out, w, "G_SOFT n=3 blocking=false e.g. oracle-nightly, queen-doctor, rings-rust\n", 72) == true;
     assert buf_has(&out, w, "G_REPORTING n=2 blocking=false e.g. auto-merge-ready-prs, queen-publish\n", 72) == true;
 }
+
+test a_hole_in_either_column_fails_the_filled_check {
+    assert rows_filled(NAMES, EVENTS) == true;
+    var n : [67]str = undefined;
+    for i in 0..67 { n[i] = NAMES[i]; }
+    n[66] = "";
+    assert rows_filled(n, EVENTS) == false;
+    var e : [67]str = undefined;
+    for i in 0..67 { e[i] = EVENTS[i]; }
+    e[0] = "";
+    assert rows_filled(NAMES, e) == false;
+}
+
+test a_repeated_name_is_caught_wherever_it_sits {
+    var n : [67]str = undefined;
+    for i in 0..67 { n[i] = NAMES[i]; }
+    var l : [67]usize = undefined;
+    for i in 0..67 { l[i] = NAME_LENS[i]; }
+    n[5] = n[4];
+    l[5] = l[4];
+    assert names_unique_in(n, l) == false;
+    var m : [67]str = undefined;
+    for i in 0..67 { m[i] = NAMES[i]; }
+    var k : [67]usize = undefined;
+    for i in 0..67 { k[i] = NAME_LENS[i]; }
+    m[66] = m[0];
+    k[66] = k[0];
+    assert names_unique_in(m, k) == false;
+}
+
+test a_class_outside_the_three_is_unknown {
+    assert classes_known(CLASSES) == true;
+    var c : [67]u8 = undefined;
+    for i in 0..67 { c[i] = CLASSES[i]; }
+    c[66] = G_UNKNOWN;
+    assert classes_known(c) == false;
+    // Each of the three real classes passes on its own, so no one of the three checks is spare.
+    c[66] = G_BLOCKING;
+    assert classes_known(c) == true;
+    c[66] = G_SOFT;
+    assert classes_known(c) == true;
+    c[66] = G_REPORTING;
+    assert classes_known(c) == true;
+}