feat(S8): ingest through the bank — capture/import/drop into bank + assign to active instance

src/persist.cpp

@@ -256,6 +256,23 @@ bool ReaSamplerSession::saveToActiveProject() {
     return true;
 }
 
+bool ReaSamplerSession::writeAssignmentRequest(const std::string& wire) {
+    std::string rppPath;
+    void* proj = readActiveProject(rppPath);
+    if (!proj) return false;           // no active project — nothing to signal
+    if (rppPath.empty()) return false; // unsaved project — no .rpp to store into
+
+    // One-shot write of the ingest assignment request under its own key (S8). Independent
+    // of the book/view/tail blobs — this is a transient signal to the instrument, not
+    // session state that must ride every save. Uses the channel-derived namespace
+    // (projExtNamespace) like every sibling key — V4 isolation applies here too, so a beta
+    // instrument reads only a beta extension's assignment requests.
+    SetProjExtState(static_cast<ReaProject*>(proj), projExtNamespace(),
+                    kProjExtAssignKey, wire.c_str());
+    MarkProjectDirty(static_cast<ReaProject*>(proj));
+    return true;
+}
+
 namespace {
 
 // The dry-run file-list display cap: the orphan COUNT and reclaimed SIZE are always