feat(capture): bindable capture family — master/tracks/items/razor (M7)

Four wet capture actions route to OfflineRenderBackend (snapshot/restore
RENDER_*, 32-bit float), produce a Sample, add to the bank, persist. Pure
render_settings maps source mode to RENDER_SETTINGS and parses P_RAZOREDITS
(tested). No arrange insertion. True dry deferred to M10.

CMakeLists.txt

@@ -74,6 +74,18 @@ target_link_libraries(view_tree PUBLIC view_mode_model)
 add_library(insert_plan STATIC src/insert_plan.cpp)
 target_include_directories(insert_plan PUBLIC src)
 
+# ---------------------------------------------------------------------------
+# 2f) Pure render_settings library — NO REAPER, NO SWELL. The M7 capture-family
+#     logic: source-mode + wet/dry -> RENDER_SETTINGS bit value, P_RAZOREDITS
+#     string -> time ranges + union bound, and the capture-action taxonomy table.
+#     Split out so the fiddly bit-mapping / razor-parsing is unit-tested outside
+#     the DAW; the render-driving + selection reads stay in capture.cpp / main.cpp.
+#     Depends on bank_model for the pure SourceMode enum.
+# ---------------------------------------------------------------------------
+add_library(render_settings STATIC src/render_settings.cpp)
+target_include_directories(render_settings PUBLIC src)
+target_link_libraries(render_settings PUBLIC bank_model)
+
 # ---------------------------------------------------------------------------
 # 3) Standalone tests for the pure modules (run without launching REAPER).
 # ---------------------------------------------------------------------------
@@ -106,6 +118,10 @@ add_executable(insert_plan_tests tests/test_insert_plan.cpp)
 target_link_libraries(insert_plan_tests PRIVATE insert_plan)
 add_test(NAME insert_plan_tests COMMAND insert_plan_tests)
 
+add_executable(render_settings_tests tests/test_render_settings.cpp)
+target_link_libraries(render_settings_tests PRIVATE render_settings)
+add_test(NAME render_settings_tests COMMAND render_settings_tests)
+
 # ---------------------------------------------------------------------------
 # 4) The REAPER extension — a loadable module (dlopen'd by REAPER, not linked).
 # ---------------------------------------------------------------------------
@@ -133,8 +149,9 @@ add_library(reaper_reasampler MODULE
     src/view.cpp
     src/track_guid.cpp
     src/actions.cpp
+    src/render_settings.cpp
 )
-target_link_libraries(reaper_reasampler PRIVATE bank_model capture_paths peaks bank_grid view_mode_model insert_plan)
+target_link_libraries(reaper_reasampler PRIVATE bank_model capture_paths peaks bank_grid view_mode_model insert_plan render_settings)
 target_include_directories(reaper_reasampler PRIVATE ${SDK_INC} ${WDL_INC})
 set_target_properties(reaper_reasampler PROPERTIES PREFIX "" OUTPUT_NAME "reaper_reasampler")