Add pure view_model core (Phase D1): N-mode registry, GUID-keyed membership, folder-tree visibility derivation, snapshot-based park/restore planner, JSON round-trip; new view_model_tests CTest target

CMakeLists.txt

@@ -36,6 +36,15 @@ target_include_directories(peaks PUBLIC src)
 add_library(capture_paths STATIC src/capture_paths.cpp)
 target_include_directories(capture_paths PUBLIC src)
 
+# ---------------------------------------------------------------------------
+# 2c) Pure view_model library — NO REAPER, NO SWELL. The Design View heart
+#     (Phase D1): mode registry + GUID-keyed membership index + folder-tree-aware
+#     visibility derivation + parking/restore planner + JSON round-trip. Mirror of
+#     bank_model; the folder tree is an INPUT supplied by the D2 shell.
+# ---------------------------------------------------------------------------
+add_library(view_model STATIC src/view_model.cpp)
+target_include_directories(view_model PUBLIC src)
+
 # ---------------------------------------------------------------------------
 # 3) Standalone tests for the pure modules (run without launching REAPER).
 # ---------------------------------------------------------------------------
@@ -52,6 +61,10 @@ add_executable(capture_paths_tests tests/test_capture_paths.cpp)
 target_link_libraries(capture_paths_tests PRIVATE capture_paths)
 add_test(NAME capture_paths_tests COMMAND capture_paths_tests)
 
+add_executable(view_model_tests tests/test_view_model.cpp)
+target_link_libraries(view_model_tests PRIVATE view_model)
+add_test(NAME view_model_tests COMMAND view_model_tests)
+
 # ---------------------------------------------------------------------------
 # 4) The REAPER extension — a loadable module (dlopen'd by REAPER, not linked).
 # ---------------------------------------------------------------------------
@@ -59,6 +72,7 @@ add_library(reaper_reasampler MODULE
     src/main.cpp
     src/capture.cpp
     src/persist.cpp
+    src/view_model.cpp
 )
 target_link_libraries(reaper_reasampler PRIVATE bank_model capture_paths)
 target_include_directories(reaper_reasampler PRIVATE ${SDK_INC} ${WDL_INC})