Render in place: a track's output to a new sibling, source to the bench

src/core/capture/capture_name.h

@@ -59,4 +59,16 @@ std::string formatCaptureStamp(const CaptureStamp& stamp);
 
 CaptureName composeCaptureName(const CaptureNameInputs& in);
 
+// Prefixed onto a source track's name to name the track a render-in-place created.
+// A display convention, not a persisted key — unlike a lane prefix or an action-id
+// suffix, changing it later strands nothing.
+inline constexpr const char* kCaptureTrackPrefix = "Capture ";
+
+// The new track's name for a render of `sourceName`. IDEMPOTENT — a fixed point on
+// its own output, so a second render over a result track yields "Capture MONEY"
+// again rather than "Capture Capture MONEY". A counter suffix is deliberately not
+// offered: REAPER does not uniquify track names either, and what distinguishes two
+// renders of one source is their position, not their name.
+std::string captureTrackName(const std::string& sourceName);
+
 } // namespace reasampler::capture