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

src/persist.h

@@ -207,6 +207,21 @@ public:
     // shown the confirm; this method does NOT prompt.
     PruneDeletionResult pruneReclaim(const std::vector<std::string>& confirmed) const;
 
+    // Write the S8 ingest ASSIGNMENT REQUEST to the active project's ext state (the
+    // `assign_request` key, namespace "reasampler"): the extension telling the active
+    // sampler instance "play THIS sample now." `wire` is the pure assignment_request
+    // encoding (assignment_request.h); this method only routes the already-encoded value
+    // to ext state + MarkProjectDirty — the (bankId, sampleId, generation) shaping and
+    // the encode live in the ingest shell (the pure module) so persist stays a thin bridge.
+    //
+    // A SIBLING one-shot write, NOT part of saveToActiveProject's book/view/tail blob: an
+    // assignment request is a transient "just assigned" signal the instrument reads and
+    // acts on, so it rides its own key and is written only at ingest time, never on every
+    // book save. Returns true iff written (an active, SAVED project existed); false on a
+    // no-active / unsaved project (nothing to write into — the assign is dropped, matching
+    // the book/manifest quiet-persist idiom the ingest add-path already tolerates).
+    bool writeAssignmentRequest(const std::string& wire);
+
     // Poll the active project. Detects a project load (active project changed)
     // and a Save-As (active project's .rpp path changed) and reacts accordingly.
     // Intended to be driven by REAPER's "timer" register. Idempotent per tick.