Merge Ε-W2: bank export and bank import, both verbs and both panel rows

Union of two parallel tracks. Both action rows, both menu rows, both link
edges survive; the two package CLAUDE.md files now describe the post-merge
reality rather than either side's pre-merge scope.

src/shell/panel/panel_bank_ops.cpp

@@ -17,6 +17,7 @@
 #include "shell/panel/panel_bank_ops.h"
 
 #include "shell/actions/package_export_action.h"  // doBankPackageExport — the export skin
+#include "shell/actions/package_import_action.h"  // doImportBankPackage — the menu's import row
 #include "shell/bank_ops/bank_ops.h"    // bankOp* promptless verbs
 #include "shell/persist/session.h"      // ReaSamplerSession — the live session the ops mutate
 
@@ -244,6 +245,7 @@ enum : unsigned int {
     kMenuCreate,
     kMenuExport,            // export this bank as a .rsbank package
     kMenuRemove,            // remove selected sample(s) from the source bank
+    kMenuImportPackage,     // land a .rsbank as a NEW bank (never merges into this one)
     kMenuMoveBase = 1000,   // move-to-bank: kMenuMoveBase + destination index
     kMenuCopyBase = 2000,   // copy-to-bank: kMenuCopyBase + destination index
 };
@@ -270,6 +272,7 @@ void showTabMenu(int screenX, int screenY, const std::string& bankId) {
     menuAppend(menu, kMenuExport, "Export as package...");
     menuSeparator(menu);
     menuAppend(menu, kMenuCreate, "New bank...");
+    menuAppend(menu, kMenuImportPackage, "Import bank package...");
 
     const int cmd = TrackPopupMenu(menu, TPM_RETURNCMD, screenX, screenY, 0,
                                    g_panel.hwnd, nullptr);
@@ -282,6 +285,18 @@ void showTabMenu(int screenX, int screenY, const std::string& bankId) {
         case kMenuDelete:   doDeleteBank(bankId); break;
         case kMenuExport:   doBankPackageExport(*g_panel.session, bankId); break;
         case kMenuCreate:   doCreateBank(); break;
+        // Always a NEW bank, never a merge into the right-clicked one — the row sits
+        // here because this is the panel's bank menu, not because it targets this bank.
+        case kMenuImportPackage:
+            if (g_panel.session) {
+                const std::string id = doImportBankPackage(*g_panel.session);
+                if (!id.empty()) {  // landed — show the freshly-imported bank
+                    g_panel.shownBankId = id;
+                    g_panel.focusedRegion = Region::Banks;
+                    invalidatePanel();
+                }
+            }
+            break;
         default: break;
     }
 }