Ξ-W2-T1: the resample bake chain — instrument renders, extension banks, one click re-points and resets

src/ext_keys.h

@@ -68,4 +68,16 @@ inline std::string usageKeyFor(const std::string& instanceGuid) {
     return std::string(kProjExtUsageKeyPrefix) + instanceGuid;
 }
 
+// The resample bake's one key per asking instance — "rsbake_<instanceGuid>". The
+// INSTRUMENT writes the request here and the EXTENSION writes its outcome back over the
+// same key, within one synchronous action invocation; the instrument then clears it. The
+// second of the two prefixes the instrument may write (the guard itself lives in
+// reaper_bridge.h). Nothing durable is keyed off this spelling, but a stale value from a
+// crashed session must still decode or be ignored — so treat it as fixed anyway.
+inline constexpr const char* kProjExtBakeKeyPrefix = "rsbake_";
+
+inline std::string bakeKeyFor(const std::string& instanceGuid) {
+    return std::string(kProjExtBakeKeyPrefix) + instanceGuid;
+}
+
 }  // namespace reasampler