fix(zone-view): Add Zone seeds narrow octave range so new zones survive reconcile

src/vst/reasampler_editor.cpp

@@ -1943,10 +1943,13 @@ void ReaSamplerEditor::onMouseDown(int x, int y) {
     Rect addR{content.left + pad, content.top + 4, content.left + pad + 96,
               content.top + 4 + 20};
     if (contains(addR, x, y)) {
-        // Add a full-keyboard zone for the picked capture (or the first visible sample as a
+        // Add a narrow default zone for the picked capture (or the first visible sample as a
         // sensible seed). No pick -> nothing to add. If a full-keyboard zone for the seed id
-        // already exists, select it rather than appending a duplicate (mirrors the upsert the
-        // root-marker drag path already performs, preventing overlapping identical zones).
+        // already exists (pre-fix bleed survivor), select it rather than appending a duplicate
+        // (mirrors the upsert the root-marker drag path already performs).
+        // NARROW DEFAULT: seed [root-6, root+5] (one octave centred on the bank root, clamped
+        // to [0,127]) so the new zone is immediately "authored" (narrow) and survives
+        // reconcileSingleCaptureZones without being treated as a Sample-face full-range zone.
         std::string seed = !selectedId_.empty() ? selectedId_
                            : (!visible_.empty() ? visible_.front().id : std::string());
         if (seed.empty()) return;
@@ -1958,10 +1961,17 @@ void ReaSamplerEditor::onMouseDown(int x, int y) {
                 return;
             }
         }
+        // Look up the seed's root note from the browser list (absent root defaults to 60).
+        int seedRoot = 60;
+        for (const SampleChoice& sc : samples_) {
+            if (sc.id == seed) { if (sc.rootNote.has_value()) seedRoot = *sc.rootNote; break; }
+        }
+        const int lo = (std::max)(0,   seedRoot - 6);
+        const int hi = (std::min)(127, seedRoot + 5);
         PerformanceZone z;
         z.sampleId = seed;
-        z.lowNote = 0;
-        z.highNote = 127;
+        z.lowNote = lo;
+        z.highNote = hi;
         map_.zones.push_back(z);
         selectedZone_ = static_cast<int>(map_.zones.size()) - 1;
         commitAndReload();