Ψ-W2-T1 remediation: scrim the card name over the waveform, hedge two SDK claims, fix a UTF-8-truncation empty-label bug, file the legibility DAW deferral

tests/test_capture_name.cpp

@@ -103,6 +103,26 @@ static void testEmptyNameAndEmptyFallbackStillYieldALegalStem() {
     CHECK(sanitizeStem(n.stemBase) == "capture");
 }
 
+static void testAllWhitespaceNameFallsBackToTheScopeLiteral() {
+    // Distinct path from an empty name: trimmed() is what empties it, before truncation
+    // ever runs.
+    const CaptureName n = composeCaptureName(inputsFor({"   "}, 0, "item"));
+    CHECK(n.label == "item 08-01 1432");
+    CHECK(sanitizeStem(n.stemBase) == "item");
+}
+
+static void testNameThatTruncatesToNothingFallsBackToCapture() {
+    // Over-length and made entirely of a UTF-8 continuation byte (0x80-0xBF): not empty
+    // pre-truncation, so it survives trimmed()/the fallback chain as a real name — but
+    // truncateUtf8 backs off over continuation bytes and walks all the way to 0 (every byte
+    // in the first kMaxSourceNameBytes is a continuation byte), which used to leave an
+    // empty label.
+    const std::string allContinuation(kMaxSourceNameBytes + 10, '\x80');
+    const CaptureName n = composeCaptureName(inputsFor({allContinuation}));
+    CHECK(n.label == "capture 08-01 1432");
+    CHECK(sanitizeStem(n.stemBase) == "capture");
+}
+
 static void testUnnamedTrackUsesReaperTrackNConvention() {
     // What GetTrackName actually hands back for an unnamed track — the deterministic
     // fallback rides in as an ordinary name, no special case in the composer.
@@ -231,6 +251,8 @@ int main() {
     testEmptyNameFallsBackToTheScopeLiteral();
     testNoSourceAtAllFallsBackToTheScopeLiteral();
     testEmptyNameAndEmptyFallbackStillYieldALegalStem();
+    testAllWhitespaceNameFallsBackToTheScopeLiteral();
+    testNameThatTruncatesToNothingFallsBackToCapture();
     testUnnamedTrackUsesReaperTrackNConvention();
     testAllPunctuationNameKeepsTheLabelAndCollapsesTheStem();
     testNonAsciiNameKeepsTheLabelAndCollapsesTheStem();