Name captures after their source track: label and filename both, on every interactive mint site, and show the name on the panel card

src/shell/capture/capture.cpp

@@ -201,6 +201,32 @@ std::string makeUniqueTag(const std::string& prefix) {
            std::to_string(++counter);
 }
 
+CaptureName captureNameFor(const std::vector<std::string>& sourceNames,
+                           int ordinal, const std::string& fallback) {
+    CaptureNameInputs in;
+    in.sourceNames = sourceNames;
+    in.ordinal     = ordinal;
+    in.fallback    = fallback;
+
+    // localtime, not gmtime: the discriminator is read by the person who made the
+    // capture, so it must match the clock on their wall. A failed conversion leaves the
+    // stamp zeroed, which composeCaptureName renders as no discriminator at all.
+    const std::time_t now = std::time(nullptr);
+    std::tm local{};
+#ifdef _WIN32
+    const bool ok = (localtime_s(&local, &now) == 0);
+#else
+    const bool ok = (localtime_r(&now, &local) != nullptr);
+#endif
+    if (ok) {
+        in.stamp.month  = local.tm_mon + 1;   // tm_mon is 0-based
+        in.stamp.day    = local.tm_mday;
+        in.stamp.hour   = local.tm_hour;
+        in.stamp.minute = local.tm_min;
+    }
+    return composeCaptureName(in);
+}
+
 void stampCaptureSample(Sample& s, const CaptureRequest& req,
                         ReaProject* rateProj, ReaProject* timeSigProj,
                         const std::string& absolutePath) {
@@ -452,7 +478,7 @@ CaptureResult OfflineRenderBackend::capture(const CaptureRequest& request) {
     // Same uniqueTag that named the file — calling makeUniqueTag() again could
     // yield a different value and desync Sample.id from the file name.
     s.id            = "cap-" + uniqueTag + "-" + paths.fileName;
-    s.displayName   = request.baseName;
+    s.displayName   = request.label();
     s.relativePath  = paths.relativePath;  // project-relative (invariant)
     s.sourceMode    = request.sourceMode;
     s.sourceRange.startSeconds = request.startSeconds;