Q-W4: split actions.cpp into design_view_actions/bank_actions/prune_action + shared action_registry; bank verbs deduped into promptless bankOp* inner verbs in panel_bank_ops (one mutation home, two UX skins); command-id strings byte-identical; actions.h shim carrier retired

CMakeLists.txt

@@ -365,7 +365,7 @@ target_include_directories(app_version PUBLIC src ${CMAKE_CURRENT_BINARY_DIR}/ge
 #     FX-chain identity fold, and the pure parent-detection decision (resample-from-
 #     sample by resolved file path). Split out so the encoding + decision logic are
 #     unit-tested outside the DAW; the FX-chain query, capture re-run, and action
-#     registration stay in the shell (main.cpp / actions.cpp). No dependency on
+#     registration stay in the shell (main.cpp / shell/actions/). No dependency on
 #     bank_model — it takes plain strings/values at its boundary.
 # ---------------------------------------------------------------------------
 add_library(provenance STATIC src/core/model/provenance.cpp)
@@ -1123,7 +1123,10 @@ add_library(reaper_reasampler MODULE
     src/core/view/guid_diff.cpp
     src/core/view/lane_keys.cpp
     src/shell/capture/item_read.cpp
-    src/actions.cpp
+    src/shell/actions/action_registry.cpp
+    src/shell/actions/design_view_actions.cpp
+    src/shell/actions/bank_actions.cpp
+    src/shell/actions/prune_action.cpp
     src/ingest.cpp
     src/core/model/bank_book.cpp
     src/core/model/owned_manifest.cpp