feat(banks): bindable multi-bank action family — create/rename/delete/evacuate/activate/move/copy + full-height toggles (B3)

src/actions.h

@@ -39,4 +39,31 @@ bool designViewHandleCommand(int command);
 // '-'-prefixed strings (per the contract's unload rule). Call once on rec==nullptr.
 void designViewUnregisterActions(reaper_plugin_info_t* rec);
 
+// --- Multi-bank action family (Phase B3) -----------------------------------
+// The bindable action set that drives the multi-bank workflow: create / rename /
+// delete / evacuate a bank, activate a bank (direct pool/design-free + cycle), move /
+// copy the panel's selected samples into a bank, and the two vertical-split
+// full-height toggles. Every mutating action drives the B1 model on
+// g_session.book() and persists via g_session.saveToActiveProject() so the change
+// travels with the .rpp; the toggles flip the B4-rendered layout bit on the panel.
+//
+// Same registration/routing/unload contract as the Design View family above and the
+// same shared g_session. Kept a distinct trio (not folded into the Design View one)
+// because the two families are orthogonal pillars — but they share the single
+// hookcommand main.cpp owns; each family's Handle claims only its own ids.
+
+// Registers the multi-bank family against `rec`. `session` is the live session (must
+// outlive registration). Call exactly once at load. Shares g_session with the Design
+// View family — pass the SAME session pointer.
+void bankRegisterActions(reaper_plugin_info_t* rec, ReaSamplerSession* session);
+
+// Services one fired command for the multi-bank family. True iff it was one of this
+// family's ids (and handled); false otherwise so the caller's hookcommand keeps
+// looking. Safe for any command.
+bool bankHandleCommand(int command);
+
+// Mirror-unregisters the multi-bank family with '-'-prefixed strings. Call once on
+// rec==nullptr (before g_session is torn down).
+void bankUnregisterActions(reaper_plugin_info_t* rec);
+
 }  // namespace reasampler