Merge dev into phase-b-multibank (integrate parallel M7/8 + Phase D work before dev promotion)

# Conflicts:
#	CLAUDE.md
#	CMakeLists.txt
#	src/actions.cpp
#	src/bank_panel.cpp
#	src/persist.h

CMakeLists.txt

@@ -74,6 +74,10 @@ target_include_directories(tab_strip PUBLIC src)
 # ---------------------------------------------------------------------------
 add_library(view_mode_model STATIC src/view_mode_model.cpp)
 target_include_directories(view_mode_model PUBLIC src)
+# The pure lane-minting decision (planLaneMinting) names managed lanes via the ONE
+# durable-key convention in lane_keys (laneNameForMode), so the model depends on that
+# pure sibling. PUBLIC so every consumer (tests + module) resolves the symbol.
+target_link_libraries(view_mode_model PUBLIC lane_keys)
 
 # ---------------------------------------------------------------------------
 # 2d) Pure view_tree library — NO REAPER, NO SWELL. The one testable-outside-DAW
@@ -86,6 +90,28 @@ add_library(view_tree STATIC src/view_tree.cpp)
 target_include_directories(view_tree PUBLIC src)
 target_link_libraries(view_tree PUBLIC view_mode_model)
 
+# ---------------------------------------------------------------------------
+# 2d'') Pure guid_diff library — NO REAPER, NO SWELL. The D2 Wave-2 new-content
+#       detection core: current \ previous GUID diff + the first-poll-after-open
+#       baseline guard (and per-project reset). Split out so the fiddly baseline/diff
+#       logic is unit-tested outside the DAW; the bank_panel timer that reads REAPER's
+#       live track/item GUID set and applies the tags is DAW-verified. Mirror of
+#       view_tree splitting the folder-depth walk out of view.cpp.
+# ---------------------------------------------------------------------------
+add_library(guid_diff STATIC src/guid_diff.cpp)
+target_include_directories(guid_diff PUBLIC src)
+
+# ---------------------------------------------------------------------------
+# 2d''') Pure lane_keys library — NO REAPER, NO SWELL. The managed/manual fixed-lane
+#        heuristic (D2 Wave-2): a lane whose durable P_LANENAME:n carries the
+#        "reasampler:" prefix is tool-managed and keyed by that stable name; any other
+#        lane is user-minted manual and off-limits. Resolves design point #1 (auto-tag
+#        exemption) and #2 (name-keyed identity survives ordinal renumber). Split out
+#        so the prefix rule is unit-tested; view.cpp reads the names from REAPER.
+# ---------------------------------------------------------------------------
+add_library(lane_keys STATIC src/lane_keys.cpp)
+target_include_directories(lane_keys PUBLIC src)
+
 # ---------------------------------------------------------------------------
 # 2e) Pure insert_plan library — NO REAPER, NO SWELL. The InsertMedia `mode`
 #     bitmask arithmetic behind the `insert` shell (M6). Split out so the
@@ -143,6 +169,20 @@ add_library(realtime_record STATIC src/realtime_record.cpp)
 target_include_directories(realtime_record PUBLIC src)
 target_link_libraries(realtime_record PUBLIC bank_model)
 
+# ---------------------------------------------------------------------------
+# 2h) Pure wav_trim library — NO REAPER, NO SWELL. The realtime tail's (T2) PCM
+#     decay-scan trim needs to TRUNCATE the recorded 32-bit-float WAV at a frame
+#     boundary without corrupting the RIFF container. This module holds the fiddly,
+#     easy-to-get-wrong part unit-tested outside the DAW: parse the WAV geometry
+#     (fmt/data chunk walk + 32-bit-float verification), extract the tail-region
+#     floats to scan, and compute the truncate plan (kept byte length + the two
+#     patched RIFF/data size fields). The file read/write/truncate I/O stays in the
+#     realtime shell. Depends on peaks for the AudioSample float alias.
+# ---------------------------------------------------------------------------
+add_library(wav_trim STATIC src/wav_trim.cpp)
+target_include_directories(wav_trim PUBLIC src)
+target_link_libraries(wav_trim PUBLIC peaks)
+
 # ---------------------------------------------------------------------------
 # 3) Standalone tests for the pure modules (run without launching REAPER).
 # ---------------------------------------------------------------------------
@@ -179,6 +219,14 @@ add_executable(view_tree_tests tests/test_view_tree.cpp)
 target_link_libraries(view_tree_tests PRIVATE view_tree)
 add_test(NAME view_tree_tests COMMAND view_tree_tests)
 
+add_executable(guid_diff_tests tests/test_guid_diff.cpp)
+target_link_libraries(guid_diff_tests PRIVATE guid_diff)
+add_test(NAME guid_diff_tests COMMAND guid_diff_tests)
+
+add_executable(lane_keys_tests tests/test_lane_keys.cpp)
+target_link_libraries(lane_keys_tests PRIVATE lane_keys)
+add_test(NAME lane_keys_tests COMMAND lane_keys_tests)
+
 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)
@@ -199,6 +247,10 @@ add_executable(bank_book_tests tests/test_bank_book.cpp)
 target_link_libraries(bank_book_tests PRIVATE bank_book)
 add_test(NAME bank_book_tests COMMAND bank_book_tests)
 
+add_executable(wav_trim_tests tests/test_wav_trim.cpp)
+target_link_libraries(wav_trim_tests PRIVATE wav_trim)
+add_test(NAME wav_trim_tests COMMAND wav_trim_tests)
+
 # ---------------------------------------------------------------------------
 # 4) The REAPER extension — a loadable module (dlopen'd by REAPER, not linked).
 # ---------------------------------------------------------------------------
@@ -229,10 +281,13 @@ add_library(reaper_reasampler MODULE
     src/view_tree.cpp
     src/view.cpp
     src/track_guid.cpp
+    src/guid_diff.cpp
+    src/lane_keys.cpp
+    src/item_read.cpp
     src/actions.cpp
     src/bank_book.cpp
 )
-target_link_libraries(reaper_reasampler PRIVATE bank_model capture_paths peaks bank_grid mode_switch tab_strip view_mode_model insert_plan render_settings tail_control realtime_record bank_book)
+target_link_libraries(reaper_reasampler PRIVATE bank_model capture_paths peaks bank_grid mode_switch tab_strip view_mode_model insert_plan render_settings tail_control realtime_record bank_book wav_trim)
 target_include_directories(reaper_reasampler PRIVATE ${SDK_INC} ${WDL_INC})
 set_target_properties(reaper_reasampler PROPERTIES PREFIX "" OUTPUT_NAME "reaper_reasampler")