test: migrate 24 residual carriers into the fixture corpus

Audit-driven migrate-and-retire wave (one read-only auditor per
carrier batch, verdicts row-checked through the full corpus gate):
every retired carrier's assertions are now owned by declarative
fixtures or an existing owner. 238 new fixtures land (corpus 1,239 ->
1,477; cells 2,954), covering enum/str/slice/tagged array elements,
inferred-length arrays, global slice/str zero-init and literals,
global array/pointer field reads and stores, struct-literal slice
fields, struct returns, float arithmetic, size/int limits, sort and
log-vstream behavior, place-addressed stores, and append places.
Rejection rows STRENGTHEN the old nonzero-exit checks to required
diagnostic fragments; all byte-id claims fold into the blanket
test-data-byteid sweep (now 1,142 compared, 0 pinned-divergent).
Four carriers were fully redundant with existing fixtures/lang tests
(749, 722, 765, and 771's byteid rows) and retire without new rows.
Native carriers 171 -> 147 (residual 135 -> 111).

test/wcc/data/r805_c4_range_edges/case.ww

@@ -0,0 +1,22 @@
+//ww:run-exit 74
+package main;
+type th = struct { pc: size, matched: bool };
+type t12 = struct { x: u32, y: u32, z: u32 };
+export fn main() i32 = {
+	let es: []th = [];
+	for (let t .. es) { return 1; };
+	let xs: []th = [];
+	append(xs, th { pc = 7, matched = true });
+	let cnt: size = 0;
+	for (let t2 .. xs) { t2.pc = 99; t2.matched = false; cnt += 1; };
+	if (cnt != 1) { return 2; };
+	if (xs[0].pc != 7) { return 3; };
+	if (!xs[0].matched) { return 4; };
+	let ns: []t12 = [];
+	append(ns, t12 { x = 1u32, y = 2u32, z = 3u32 });
+	append(ns, t12 { x = 4u32, y = 5u32, z = 6u32 });
+	let sum: size = 0;
+	for (let n .. ns) { sum += n.x: size; sum += n.y: size; sum += n.z: size; };
+	if (sum != 21) { return 5; };
+	return 74;
+};