docs: close three review nits — the build-shape index, a redundant header restatement, and the CMake guard comment

Bump the product doc's track count and list for T3; trim the header's
pre-limiter restatement now that bake_render.cpp carries it; add limiter
to the extension's not-linked enumeration.

src/app/CMakeLists.txt

@@ -52,9 +52,9 @@ add_library(reaper_reasampler MODULE
     ${REASAMPLER_SRC_DIR}/shell/persist/usage_scan.cpp
 )
 target_link_libraries(reaper_reasampler PRIVATE json wire file_bytes bank_model capture_paths capture_name peaks bank_grid mode_switch tab_strip view_mode_model view_tree guid_diff lane_keys solo_cache insert_plan render_settings render_window track_topology batch_capture tail_control capture_realtime bank_book wav_codec origin_ledger tracking_authority prune_reconcile prune_button app_version provenance drag_out instrument_drop theme component_geometry action_bar footer_bar overflow_menu mode_enable tooltip card_meta card_drag assignment_request bank_sync sample_usage bake_wire resample_name)
-# NOT linked here, deliberately: sampler_core / pitch_shift / the filter. The instrument
-# renders its own bake in its own process, which is what keeps the extension's link graph
-# free of the voice engine — a link edge to it here means the design drifted.
+# NOT linked here, deliberately: sampler_core / pitch_shift / the filter / limiter. The
+# instrument renders its own bake in its own process, which is what keeps the extension's
+# link graph free of the voice engine — a link edge to it here means the design drifted.
 target_include_directories(reaper_reasampler PRIVATE ${SDK_INC} ${WDL_INC})
 
 # OUTPUT_NAME is channel-derived; the CMake target name stays "reaper_reasampler" for both