diff --git a/apps/esp32_lvgl/CMakeLists.txt b/apps/esp32_lvgl/CMakeLists.txt
index 4f6dc180..9e969be5 100644
--- a/apps/esp32_lvgl/CMakeLists.txt
+++ b/apps/esp32_lvgl/CMakeLists.txt
@@ -13,7 +13,6 @@ include(CTest)
 add_library(trailmate_esp32_lvgl_app_shell
     src/esp32_lvgl_idf_app_runtime_access.cpp
     src/esp32_lvgl_app_shell.cpp
-    src/esp32_lvgl_historical_source_descriptor.cpp
     src/esp32_lvgl_startup_runtime.cpp
     src/esp32_lvgl_loop_runtime.cpp
     src/esp32_lvgl_runtime_config.cpp
@@ -40,13 +39,6 @@ if(BUILD_TESTING)
     add_test(NAME trailmate_esp32_lvgl_app_shell_smoke
              COMMAND trailmate_esp32_lvgl_app_shell_smoke)
 
-    add_executable(trailmate_esp32_lvgl_historical_source_descriptor_smoke
-        tests/esp32_lvgl_historical_source_descriptor_smoke.cpp)
-    target_link_libraries(trailmate_esp32_lvgl_historical_source_descriptor_smoke
-        PRIVATE trailmate_esp32_lvgl_app_shell)
-    add_test(NAME trailmate_esp32_lvgl_historical_source_descriptor_smoke
-             COMMAND trailmate_esp32_lvgl_historical_source_descriptor_smoke)
-
     add_executable(trailmate_esp32_lvgl_startup_runtime_smoke
         tests/esp32_lvgl_startup_runtime_smoke.cpp)
     target_link_libraries(trailmate_esp32_lvgl_startup_runtime_smoke
diff --git a/apps/esp32_lvgl/README.md b/apps/esp32_lvgl/README.md
index 425147fe..8aabb3cb 100644
--- a/apps/esp32_lvgl/README.md
+++ b/apps/esp32_lvgl/README.md
@@ -19,7 +19,8 @@ UX Pack presents.
 
 Build entrypoint = `builds/esp_idf`
 
-Historical source identity = `removed root esp_idf`
+Removed root history is documented only in
+`docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 Component source list = `builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake`
 
@@ -59,9 +60,6 @@ target_family = esp32_lvgl
 default_ux_pack_id = compatibility
 build_entrypoint = builds/esp_idf
 component_sources = builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake
-historical_root_name = removed root esp_idf
-historical_role = pre-refactor ESP-IDF/LVGL implementation root
-replacement_owner = apps/esp32_lvgl + builds/esp_idf
 ```
 
 Runtime owner files:
diff --git a/apps/esp32_lvgl/src/esp32_lvgl_app_shell.cpp b/apps/esp32_lvgl/src/esp32_lvgl_app_shell.cpp
index 9c3f04c2..549ac75b 100644
--- a/apps/esp32_lvgl/src/esp32_lvgl_app_shell.cpp
+++ b/apps/esp32_lvgl/src/esp32_lvgl_app_shell.cpp
@@ -43,10 +43,7 @@ bool Esp32LvglAppShell::validate() const
            std::strcmp(config_.default_ux_pack_id, activeUxPackId()) == 0 &&
            ui_lvgl_ux::findUxPackById(activeUxPackId()) != nullptr &&
            config_.build_entrypoint != nullptr &&
-           config_.component_sources != nullptr &&
-           config_.historical_root_name != nullptr &&
-           config_.historical_role != nullptr &&
-           config_.replacement_owner != nullptr;
+           config_.component_sources != nullptr;
 }
 
 } // namespace esp32_lvgl
diff --git a/apps/esp32_lvgl/src/esp32_lvgl_app_shell.h b/apps/esp32_lvgl/src/esp32_lvgl_app_shell.h
index 5bc8da45..520cd8d7 100644
--- a/apps/esp32_lvgl/src/esp32_lvgl_app_shell.h
+++ b/apps/esp32_lvgl/src/esp32_lvgl_app_shell.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include "esp32_lvgl_historical_source_descriptor.h"
-
 #include "product_composition/target_profile.h"
 
 namespace trailmate
@@ -18,12 +16,6 @@ struct Esp32LvglAppShellConfig
     const char* default_ux_pack_id = "compatibility";
     const char* build_entrypoint = "builds/esp_idf";
     const char* component_sources = "builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake";
-    const char* historical_root_name =
-        esp32LvglHistoricalSourceDescriptor().historical_root_name;
-    const char* historical_role =
-        esp32LvglHistoricalSourceDescriptor().historical_role;
-    const char* replacement_owner =
-        esp32LvglHistoricalSourceDescriptor().replacement_owner;
 };
 
 class Esp32LvglAppShell
diff --git a/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.cpp b/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.cpp
deleted file mode 100644
index 310eb44a..00000000
--- a/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-#include "esp32_lvgl_historical_source_descriptor.h"
-
-namespace trailmate::apps::esp32_lvgl
-{
-
-const Esp32LvglHistoricalSourceDescriptor&
-esp32LvglHistoricalSourceDescriptor()
-{
-    static const Esp32LvglHistoricalSourceDescriptor descriptor{};
-    return descriptor;
-}
-
-} // namespace trailmate::apps::esp32_lvgl
diff --git a/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.h b/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.h
deleted file mode 100644
index 23ece452..00000000
--- a/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#pragma once
-
-namespace trailmate::apps::esp32_lvgl
-{
-
-struct Esp32LvglHistoricalSourceDescriptor
-{
-    const char* historical_root_name = "removed root esp_idf";
-    const char* historical_role = "pre-refactor ESP-IDF/LVGL implementation root";
-    const char* replacement_owner = "apps/esp32_lvgl + builds/esp_idf";
-};
-
-const Esp32LvglHistoricalSourceDescriptor&
-esp32LvglHistoricalSourceDescriptor();
-
-} // namespace trailmate::apps::esp32_lvgl
diff --git a/apps/esp32_lvgl/tests/esp32_lvgl_app_shell_smoke.cpp b/apps/esp32_lvgl/tests/esp32_lvgl_app_shell_smoke.cpp
index 5b18af32..9db39588 100644
--- a/apps/esp32_lvgl/tests/esp32_lvgl_app_shell_smoke.cpp
+++ b/apps/esp32_lvgl/tests/esp32_lvgl_app_shell_smoke.cpp
@@ -23,12 +23,6 @@ int main()
     assert(std::strcmp(config.build_entrypoint, "builds/esp_idf") == 0);
     assert(std::strcmp(config.component_sources,
                        "builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake") == 0);
-    assert(std::strcmp(config.historical_root_name,
-                       "removed root esp_idf") == 0);
-    assert(std::strcmp(config.historical_role,
-                       "pre-refactor ESP-IDF/LVGL implementation root") == 0);
-    assert(std::strcmp(config.replacement_owner,
-                       "apps/esp32_lvgl + builds/esp_idf") == 0);
     assert(ui_lvgl_ux::findUxPackById(shell.activeUxPackId()) != nullptr);
 
     ui::menu::MenuModel menu;
diff --git a/apps/esp32_lvgl/tests/esp32_lvgl_historical_source_descriptor_smoke.cpp b/apps/esp32_lvgl/tests/esp32_lvgl_historical_source_descriptor_smoke.cpp
deleted file mode 100644
index cf724071..00000000
--- a/apps/esp32_lvgl/tests/esp32_lvgl_historical_source_descriptor_smoke.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "esp32_lvgl_historical_source_descriptor.h"
-
-#include <cassert>
-#include <cstring>
-
-int main()
-{
-    const auto& descriptor =
-        trailmate::apps::esp32_lvgl::esp32LvglHistoricalSourceDescriptor();
-
-    assert(std::strcmp(descriptor.historical_root_name,
-                       "removed root esp_idf") == 0);
-    assert(std::strcmp(descriptor.historical_role,
-                       "pre-refactor ESP-IDF/LVGL implementation root") == 0);
-    assert(std::strcmp(descriptor.replacement_owner,
-                       "apps/esp32_lvgl + builds/esp_idf") == 0);
-    return 0;
-}
diff --git a/apps/linux_sim_shell/CMakeLists.txt b/apps/linux_sim_shell/CMakeLists.txt
index 856f3f74..d99216f3 100644
--- a/apps/linux_sim_shell/CMakeLists.txt
+++ b/apps/linux_sim_shell/CMakeLists.txt
@@ -13,7 +13,6 @@ trailmate_add_ui_lvgl_ux_packs(trailmate_ui_lvgl_ux_packs)
 
 add_library(trailmate_linux_sim_shell
     src/linux_sim_app_shell.cpp
-    src/linux_sim_historical_source_descriptor.cpp
     src/linux_sim_runtime_entry.cpp
     src/linux_sim_runtime_entry_adoption_probe.cpp
     src/linux_sim_runtime_renderer.cpp
@@ -48,13 +47,6 @@ if(BUILD_TESTING)
     add_test(NAME trailmate_linux_sim_app_shell_smoke
              COMMAND trailmate_linux_sim_app_shell_smoke)
 
-    add_executable(trailmate_linux_sim_historical_source_descriptor_smoke
-        tests/linux_sim_historical_source_descriptor_smoke.cpp)
-    target_link_libraries(trailmate_linux_sim_historical_source_descriptor_smoke
-        PRIVATE trailmate_linux_sim_shell)
-    add_test(NAME trailmate_linux_sim_historical_source_descriptor_smoke
-             COMMAND trailmate_linux_sim_historical_source_descriptor_smoke)
-
     add_executable(trailmate_linux_sim_runtime_entry_adoption_probe_smoke
         tests/linux_sim_runtime_entry_adoption_probe_smoke.cpp)
     target_link_libraries(trailmate_linux_sim_runtime_entry_adoption_probe_smoke
diff --git a/apps/linux_sim_shell/README.md b/apps/linux_sim_shell/README.md
index 1f6ff002..c10e91c1 100644
--- a/apps/linux_sim_shell/README.md
+++ b/apps/linux_sim_shell/README.md
@@ -20,7 +20,8 @@ UX Pack presents.
 
 Build entrypoint = `builds/linux_cmake`
 
-Historical source identity = `removed root linux_sim`
+Removed root history is documented only in
+`docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 ## Future Responsibilities
 
@@ -52,7 +53,6 @@ Current source:
 ```text
 target_id = linux_sim
 ux_pack_id = simulator_full
-historical_source = removed root linux_sim
 ```
 
-No simulator runtime behavior changes in Phase 8 Correction.
+No simulator runtime behavior changes in the app shell baseline.
diff --git a/apps/linux_sim_shell/src/linux_sim_app_shell.cpp b/apps/linux_sim_shell/src/linux_sim_app_shell.cpp
index 45703f17..66fcd5a0 100644
--- a/apps/linux_sim_shell/src/linux_sim_app_shell.cpp
+++ b/apps/linux_sim_shell/src/linux_sim_app_shell.cpp
@@ -40,17 +40,12 @@ const char* LinuxSimAppShell::activeUxPackId() const
 
 bool LinuxSimAppShell::validate() const
 {
-    const auto& historical_source = linuxSimHistoricalSourceDescriptor();
     return config_.target_id != nullptr &&
            targetProfile() != nullptr &&
            product_composition::findTargetUxBinding(targetId()) != nullptr &&
            config_.ux_pack_id != nullptr &&
            std::strcmp(config_.ux_pack_id, activeUxPackId()) == 0 &&
-           ui_lvgl_ux::findUxPackById(activeUxPackId()) != nullptr &&
-           config_.historical_source != nullptr &&
-           historical_source.historical_root_name != nullptr &&
-           historical_source.historical_role != nullptr &&
-           historical_source.replacement_owner != nullptr;
+           ui_lvgl_ux::findUxPackById(activeUxPackId()) != nullptr;
 }
 
 } // namespace linux_sim_shell
diff --git a/apps/linux_sim_shell/src/linux_sim_app_shell.h b/apps/linux_sim_shell/src/linux_sim_app_shell.h
index d97380d9..a159a12b 100644
--- a/apps/linux_sim_shell/src/linux_sim_app_shell.h
+++ b/apps/linux_sim_shell/src/linux_sim_app_shell.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include "linux_sim_historical_source_descriptor.h"
-
 #include "product_composition/target_profile.h"
 
 namespace trailmate
@@ -15,8 +13,6 @@ struct LinuxSimAppShellConfig
 {
     const char* target_id = "linux_sim";
     const char* ux_pack_id = "simulator_full";
-    const char* historical_source =
-        linuxSimHistoricalSourceDescriptor().historical_root_name;
 };
 
 class LinuxSimAppShell
diff --git a/apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.cpp b/apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.cpp
deleted file mode 100644
index 50762d91..00000000
--- a/apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.cpp
+++ /dev/null
@@ -1,12 +0,0 @@
-#include "linux_sim_historical_source_descriptor.h"
-
-namespace trailmate::apps::linux_sim_shell
-{
-
-const LinuxSimHistoricalSourceDescriptor& linuxSimHistoricalSourceDescriptor()
-{
-    static const LinuxSimHistoricalSourceDescriptor descriptor{};
-    return descriptor;
-}
-
-} // namespace trailmate::apps::linux_sim_shell
diff --git a/apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.h b/apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.h
deleted file mode 100644
index b6505550..00000000
--- a/apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-
-namespace trailmate::apps::linux_sim_shell
-{
-
-struct LinuxSimHistoricalSourceDescriptor
-{
-    const char* historical_root_name = "removed root linux_sim";
-    const char* historical_role = "pre-refactor Linux simulator implementation root";
-    const char* replacement_owner = "apps/linux_sim_shell + modules/ui_ascii_runtime";
-};
-
-const LinuxSimHistoricalSourceDescriptor& linuxSimHistoricalSourceDescriptor();
-
-} // namespace trailmate::apps::linux_sim_shell
diff --git a/apps/linux_sim_shell/tests/linux_sim_app_shell_smoke.cpp b/apps/linux_sim_shell/tests/linux_sim_app_shell_smoke.cpp
index 9127cfa0..856794f8 100644
--- a/apps/linux_sim_shell/tests/linux_sim_app_shell_smoke.cpp
+++ b/apps/linux_sim_shell/tests/linux_sim_app_shell_smoke.cpp
@@ -1,5 +1,4 @@
 #include "linux_sim_app_shell.h"
-#include "linux_sim_historical_source_descriptor.h"
 
 #include "ui_lvgl_ux_packs/ux/ux_menu_provider.h"
 #include "ui_lvgl_ux_packs/ux/ux_pack_registry.h"
@@ -22,14 +21,6 @@ int main()
     assert(std::strcmp(shell.targetProfile()->app_shell, "apps/linux_sim_shell") == 0);
     assert(shell.targetProfile()->status ==
            product_composition::TargetSupportStatus::Active);
-    const auto& descriptor =
-        trailmate::apps::linux_sim_shell::linuxSimHistoricalSourceDescriptor();
-    assert(std::strcmp(config.historical_source,
-                       descriptor.historical_root_name) == 0);
-    assert(std::strcmp(descriptor.historical_role,
-                       "pre-refactor Linux simulator implementation root") == 0);
-    assert(std::strcmp(descriptor.replacement_owner,
-                       "apps/linux_sim_shell + modules/ui_ascii_runtime") == 0);
     assert(ui_lvgl_ux::findUxPackById(shell.activeUxPackId()) != nullptr);
 
     ui::menu::MenuModel menu;
diff --git a/apps/linux_sim_shell/tests/linux_sim_historical_source_descriptor_smoke.cpp b/apps/linux_sim_shell/tests/linux_sim_historical_source_descriptor_smoke.cpp
deleted file mode 100644
index 8aafe025..00000000
--- a/apps/linux_sim_shell/tests/linux_sim_historical_source_descriptor_smoke.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "linux_sim_historical_source_descriptor.h"
-
-#include <cassert>
-#include <cstring>
-
-int main()
-{
-    const auto& descriptor =
-        trailmate::apps::linux_sim_shell::linuxSimHistoricalSourceDescriptor();
-
-    assert(std::strcmp(descriptor.historical_root_name,
-                       "removed root linux_sim") == 0);
-    assert(std::strcmp(descriptor.historical_role,
-                       "pre-refactor Linux simulator implementation root") == 0);
-    assert(std::strcmp(descriptor.replacement_owner,
-                       "apps/linux_sim_shell + modules/ui_ascii_runtime") == 0);
-    return 0;
-}
diff --git a/apps/linux_uconsole_gtk/CMakeLists.txt b/apps/linux_uconsole_gtk/CMakeLists.txt
index 7969b2e8..92d4641a 100644
--- a/apps/linux_uconsole_gtk/CMakeLists.txt
+++ b/apps/linux_uconsole_gtk/CMakeLists.txt
@@ -41,7 +41,6 @@ set(TRAIL_MATE_UCONSOLE_REAL_GTK_SOURCES
 
 add_library(trailmate_linux_uconsole_gtk_shell
     src/linux_uconsole_gtk_app_shell.cpp
-    src/linux_uconsole_gtk_historical_source_descriptor.cpp
     src/linux_uconsole_gtk_page_registry_adoption.cpp
     src/linux_uconsole_gtk_page_registry_renderer.cpp
     src/linux_uconsole_gtk_runtime_entry_adoption_probe.cpp
@@ -203,13 +202,6 @@ if(BUILD_TESTING)
     add_test(NAME trailmate_linux_uconsole_gtk_app_shell_smoke
              COMMAND trailmate_linux_uconsole_gtk_app_shell_smoke)
 
-    add_executable(trailmate_linux_uconsole_gtk_historical_source_descriptor_smoke
-        tests/linux_uconsole_gtk_historical_source_descriptor_smoke.cpp)
-    target_link_libraries(trailmate_linux_uconsole_gtk_historical_source_descriptor_smoke
-        PRIVATE trailmate_linux_uconsole_gtk_shell)
-    add_test(NAME trailmate_linux_uconsole_gtk_historical_source_descriptor_smoke
-             COMMAND trailmate_linux_uconsole_gtk_historical_source_descriptor_smoke)
-
     add_executable(trailmate_linux_uconsole_gtk_runtime_entry_adoption_probe_smoke
         tests/linux_uconsole_gtk_runtime_entry_adoption_probe_smoke.cpp)
     target_link_libraries(trailmate_linux_uconsole_gtk_runtime_entry_adoption_probe_smoke
diff --git a/apps/linux_uconsole_gtk/README.md b/apps/linux_uconsole_gtk/README.md
index 85f5009d..8d3a26ee 100644
--- a/apps/linux_uconsole_gtk/README.md
+++ b/apps/linux_uconsole_gtk/README.md
@@ -21,7 +21,8 @@ UX Pack presents.
 
 Build entrypoint = `builds/linux_cmake`
 
-Historical source identity = `removed root linux_uconsole`
+Removed root history is documented only in
+`docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 ## Future Responsibilities
 
@@ -53,7 +54,6 @@ Current source:
 ```text
 target_id = uconsole
 ux_pack_id = uconsole_desktop
-historical_source = removed root linux_uconsole
 ```
 
-No GTK runtime behavior changes in Phase 8 Correction.
+No GTK runtime behavior changes in the app shell baseline.
diff --git a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.cpp b/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.cpp
index 90806301..d09cb669 100644
--- a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.cpp
+++ b/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.cpp
@@ -41,18 +41,12 @@ const char* LinuxUConsoleGtkAppShell::activeUxPackId() const
 
 bool LinuxUConsoleGtkAppShell::validate() const
 {
-    const auto& historical_source =
-        linuxUConsoleGtkHistoricalSourceDescriptor();
     return config_.target_id != nullptr &&
            targetProfile() != nullptr &&
            product_composition::findTargetUxBinding(targetId()) != nullptr &&
            config_.ux_pack_id != nullptr &&
            std::strcmp(config_.ux_pack_id, activeUxPackId()) == 0 &&
-           ui_lvgl_ux::findUxPackById(activeUxPackId()) != nullptr &&
-           config_.historical_source != nullptr &&
-           historical_source.historical_root_name != nullptr &&
-           historical_source.historical_role != nullptr &&
-           historical_source.replacement_owner != nullptr;
+           ui_lvgl_ux::findUxPackById(activeUxPackId()) != nullptr;
 }
 
 } // namespace linux_uconsole_gtk
diff --git a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.h b/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.h
index bfe2c837..cc92f7ab 100644
--- a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.h
+++ b/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include "linux_uconsole_gtk_historical_source_descriptor.h"
-
 #include "product_composition/target_profile.h"
 
 namespace trailmate
@@ -15,8 +13,6 @@ struct LinuxUConsoleGtkAppShellConfig
 {
     const char* target_id = "uconsole";
     const char* ux_pack_id = "uconsole_desktop";
-    const char* historical_source =
-        linuxUConsoleGtkHistoricalSourceDescriptor().historical_root_name;
 };
 
 class LinuxUConsoleGtkAppShell
diff --git a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.cpp b/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.cpp
deleted file mode 100644
index 8eeb9e83..00000000
--- a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-#include "linux_uconsole_gtk_historical_source_descriptor.h"
-
-namespace trailmate::apps::linux_uconsole_gtk
-{
-
-const LinuxUConsoleGtkHistoricalSourceDescriptor&
-linuxUConsoleGtkHistoricalSourceDescriptor()
-{
-    static const LinuxUConsoleGtkHistoricalSourceDescriptor descriptor{};
-    return descriptor;
-}
-
-} // namespace trailmate::apps::linux_uconsole_gtk
diff --git a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.h b/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.h
deleted file mode 100644
index b9fe96f3..00000000
--- a/apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#pragma once
-
-namespace trailmate::apps::linux_uconsole_gtk
-{
-
-struct LinuxUConsoleGtkHistoricalSourceDescriptor
-{
-    const char* historical_root_name = "removed root linux_uconsole";
-    const char* historical_role = "pre-refactor uConsole GTK implementation root";
-    const char* replacement_owner = "apps/linux_uconsole_gtk + modules/ui_gtk_runtime";
-};
-
-const LinuxUConsoleGtkHistoricalSourceDescriptor&
-linuxUConsoleGtkHistoricalSourceDescriptor();
-
-} // namespace trailmate::apps::linux_uconsole_gtk
diff --git a/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_app_shell_smoke.cpp b/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_app_shell_smoke.cpp
index a66f03df..b3feceb9 100644
--- a/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_app_shell_smoke.cpp
+++ b/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_app_shell_smoke.cpp
@@ -1,5 +1,4 @@
 #include "linux_uconsole_gtk_app_shell.h"
-#include "linux_uconsole_gtk_historical_source_descriptor.h"
 
 #include "ui_lvgl_ux_packs/ux/ux_menu_provider.h"
 #include "ui_lvgl_ux_packs/ux/ux_pack_registry.h"
@@ -21,15 +20,6 @@ int main()
     assert(shell.targetProfile() != nullptr);
     assert(shell.targetProfile()->renderer ==
            product_composition::TargetRenderer::Gtk);
-    const auto& descriptor =
-        trailmate::apps::linux_uconsole_gtk::
-            linuxUConsoleGtkHistoricalSourceDescriptor();
-    assert(std::strcmp(config.historical_source,
-                       descriptor.historical_root_name) == 0);
-    assert(std::strcmp(descriptor.historical_role,
-                       "pre-refactor uConsole GTK implementation root") == 0);
-    assert(std::strcmp(descriptor.replacement_owner,
-                       "apps/linux_uconsole_gtk + modules/ui_gtk_runtime") == 0);
     assert(ui_lvgl_ux::findUxPackById(shell.activeUxPackId()) != nullptr);
 
     ui::menu::MenuModel menu;
diff --git a/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_historical_source_descriptor_smoke.cpp b/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_historical_source_descriptor_smoke.cpp
deleted file mode 100644
index b28e2ed9..00000000
--- a/apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_historical_source_descriptor_smoke.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "linux_uconsole_gtk_historical_source_descriptor.h"
-
-#include <cassert>
-#include <cstring>
-
-int main()
-{
-    const auto& descriptor =
-        trailmate::apps::linux_uconsole_gtk::
-            linuxUConsoleGtkHistoricalSourceDescriptor();
-
-    assert(std::strcmp(descriptor.historical_root_name,
-                       "removed root linux_uconsole") == 0);
-    assert(std::strcmp(descriptor.historical_role,
-                       "pre-refactor uConsole GTK implementation root") == 0);
-    assert(std::strcmp(descriptor.replacement_owner,
-                       "apps/linux_uconsole_gtk + modules/ui_gtk_runtime") == 0);
-    return 0;
-}
diff --git a/apps/nrf52_node/APP_SHELL_MANIFEST.md b/apps/nrf52_node/APP_SHELL_MANIFEST.md
index 4e5a14b3..772efdd9 100644
--- a/apps/nrf52_node/APP_SHELL_MANIFEST.md
+++ b/apps/nrf52_node/APP_SHELL_MANIFEST.md
@@ -18,10 +18,8 @@ Future authoritative build entrypoint:
 
 - `builds/pio_nrf52`
 
-Historical source identities:
-
-- `removed root esp_pio`
-- `removed root gat562_mesh_evb_pro`
+Removed root history is documented only in
+`docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 ## Future Responsibilities
 
@@ -66,8 +64,4 @@ UX Pack Runtime Binding:
   product-composition target UX binding. The nRF52 shell stays independent of
   LVGL UX pack runtime code.
 
-Historical source descriptor:
-
-- `nrf52_historical_source_descriptor`
-
 No behavior change in Phase 8 Build/AppShell Executable Convergence.
diff --git a/apps/nrf52_node/README.md b/apps/nrf52_node/README.md
index 88402141..29f7da22 100644
--- a/apps/nrf52_node/README.md
+++ b/apps/nrf52_node/README.md
@@ -19,7 +19,8 @@ UX Pack presents.
 
 Build entrypoint = `builds/pio_nrf52`
 
-Historical source identity = `removed root esp_pio` and `removed root gat562_mesh_evb_pro`
+Removed root history is documented only in
+`docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 ## Future Responsibilities
 
@@ -55,10 +56,6 @@ Current config:
 ```text
 target_family = nrf52_node
 default_ux_pack_id = tiny_node_status
-historical_generic_root_name = removed root esp_pio
-historical_board_root_name = removed root gat562_mesh_evb_pro
-historical_role = pre-refactor PlatformIO/nRF52 implementation roots
-replacement_owner = apps/nrf52_node + builds/pio_nrf52 + boards/gat562_mesh_evb_pro
 ```
 
-No behavior change in Phase 8 Build/AppShell Executable Convergence.
+No behavior change in the app shell baseline.
diff --git a/apps/nrf52_node/library.json b/apps/nrf52_node/library.json
index fe70b40c..c3afc42f 100644
--- a/apps/nrf52_node/library.json
+++ b/apps/nrf52_node/library.json
@@ -6,7 +6,6 @@
     "srcDir": "src",
     "srcFilter": [
       "-<*>",
-      "+<nrf52_historical_source_descriptor.cpp>",
       "+<nrf52_node_app_facade_runtime.cpp>",
       "+<nrf52_node_app_runtime_access.cpp>",
       "+<nrf52_node_app_shell.cpp>",
diff --git a/apps/nrf52_node/src/nrf52_historical_source_descriptor.cpp b/apps/nrf52_node/src/nrf52_historical_source_descriptor.cpp
deleted file mode 100644
index 7bb9bec9..00000000
--- a/apps/nrf52_node/src/nrf52_historical_source_descriptor.cpp
+++ /dev/null
@@ -1,12 +0,0 @@
-#include "nrf52_historical_source_descriptor.h"
-
-namespace trailmate::apps::nrf52_node
-{
-
-const Nrf52HistoricalSourceDescriptor& nrf52HistoricalSourceDescriptor()
-{
-    static const Nrf52HistoricalSourceDescriptor descriptor{};
-    return descriptor;
-}
-
-} // namespace trailmate::apps::nrf52_node
diff --git a/apps/nrf52_node/src/nrf52_historical_source_descriptor.h b/apps/nrf52_node/src/nrf52_historical_source_descriptor.h
deleted file mode 100644
index 0f0f48ca..00000000
--- a/apps/nrf52_node/src/nrf52_historical_source_descriptor.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#pragma once
-
-namespace trailmate::apps::nrf52_node
-{
-
-struct Nrf52HistoricalSourceDescriptor
-{
-    const char* historical_generic_root_name = "removed root esp_pio";
-    const char* historical_board_root_name = "removed root gat562_mesh_evb_pro";
-    const char* historical_role = "pre-refactor PlatformIO/nRF52 implementation roots";
-    const char* replacement_owner =
-        "apps/nrf52_node + builds/pio_nrf52 + boards/gat562_mesh_evb_pro";
-};
-
-const Nrf52HistoricalSourceDescriptor& nrf52HistoricalSourceDescriptor();
-
-} // namespace trailmate::apps::nrf52_node
diff --git a/apps/nrf52_node/src/nrf52_node_app_shell.cpp b/apps/nrf52_node/src/nrf52_node_app_shell.cpp
index c031ebdf..cf36852c 100644
--- a/apps/nrf52_node/src/nrf52_node_app_shell.cpp
+++ b/apps/nrf52_node/src/nrf52_node_app_shell.cpp
@@ -39,11 +39,7 @@ bool Nrf52NodeAppShell::validate() const
            product_composition::findTargetUxBinding(targetId()) != nullptr &&
            config_.target_family != nullptr &&
            config_.default_ux_pack_id != nullptr &&
-           std::strcmp(config_.default_ux_pack_id, activeUxPackId()) == 0 &&
-           config_.historical_generic_root_name != nullptr &&
-           config_.historical_board_root_name != nullptr &&
-           config_.historical_role != nullptr &&
-           config_.replacement_owner != nullptr;
+           std::strcmp(config_.default_ux_pack_id, activeUxPackId()) == 0;
 }
 
 } // namespace nrf52_node
diff --git a/apps/nrf52_node/src/nrf52_node_app_shell.h b/apps/nrf52_node/src/nrf52_node_app_shell.h
index 07452b55..dd8f4077 100644
--- a/apps/nrf52_node/src/nrf52_node_app_shell.h
+++ b/apps/nrf52_node/src/nrf52_node_app_shell.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include "nrf52_historical_source_descriptor.h"
-
 #include "product_composition/target_profile.h"
 
 namespace trailmate
@@ -16,14 +14,6 @@ struct Nrf52NodeAppShellConfig
     const char* target_id = "gat562_mesh_evb_pro";
     const char* target_family = "nrf52_node";
     const char* default_ux_pack_id = "tiny_node_status";
-    const char* historical_generic_root_name =
-        nrf52HistoricalSourceDescriptor().historical_generic_root_name;
-    const char* historical_board_root_name =
-        nrf52HistoricalSourceDescriptor().historical_board_root_name;
-    const char* historical_role =
-        nrf52HistoricalSourceDescriptor().historical_role;
-    const char* replacement_owner =
-        nrf52HistoricalSourceDescriptor().replacement_owner;
 };
 
 class Nrf52NodeAppShell
diff --git a/apps/nrf52_node/tests/nrf52_historical_source_descriptor_smoke.cpp b/apps/nrf52_node/tests/nrf52_historical_source_descriptor_smoke.cpp
deleted file mode 100644
index b8417f2c..00000000
--- a/apps/nrf52_node/tests/nrf52_historical_source_descriptor_smoke.cpp
+++ /dev/null
@@ -1,20 +0,0 @@
-#include "nrf52_historical_source_descriptor.h"
-
-#include <cassert>
-#include <cstring>
-
-int main()
-{
-    const auto& descriptor =
-        trailmate::apps::nrf52_node::nrf52HistoricalSourceDescriptor();
-
-    assert(std::strcmp(descriptor.historical_generic_root_name,
-                       "removed root esp_pio") == 0);
-    assert(std::strcmp(descriptor.historical_board_root_name,
-                       "removed root gat562_mesh_evb_pro") == 0);
-    assert(std::strcmp(descriptor.historical_role,
-                       "pre-refactor PlatformIO/nRF52 implementation roots") == 0);
-    assert(std::strcmp(descriptor.replacement_owner,
-                       "apps/nrf52_node + builds/pio_nrf52 + boards/gat562_mesh_evb_pro") == 0);
-    return 0;
-}
diff --git a/apps/nrf52_node/tests/nrf52_node_app_shell_smoke.cpp b/apps/nrf52_node/tests/nrf52_node_app_shell_smoke.cpp
index 7e0b431f..f98b6437 100644
--- a/apps/nrf52_node/tests/nrf52_node_app_shell_smoke.cpp
+++ b/apps/nrf52_node/tests/nrf52_node_app_shell_smoke.cpp
@@ -16,13 +16,5 @@ int main()
     assert(std::strcmp(shell.activeUxPackId(), "tiny_node_status") == 0);
     assert(shell.targetProfile() != nullptr);
     assert(shell.targetProfile()->renderer == product_composition::TargetRenderer::Headless);
-    assert(std::strcmp(config.historical_generic_root_name,
-                       "removed root esp_pio") == 0);
-    assert(std::strcmp(config.historical_board_root_name,
-                       "removed root gat562_mesh_evb_pro") == 0);
-    assert(std::strcmp(config.historical_role,
-                       "pre-refactor PlatformIO/nRF52 implementation roots") == 0);
-    assert(std::strcmp(config.replacement_owner,
-                       "apps/nrf52_node + builds/pio_nrf52 + boards/gat562_mesh_evb_pro") == 0);
     return 0;
 }
diff --git a/builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake b/builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake
index 6e4b5c24..af16aa49 100644
--- a/builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake
+++ b/builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake
@@ -10,7 +10,6 @@ set(TRAILMATE_ESP_IDF_APP_SHELL_SOURCES
     "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_idf_app_registry.cpp"
     "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_idf_app_runtime_access.cpp"
     "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_app_shell.cpp"
-    "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.cpp"
     "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_startup_runtime.cpp"
     "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_loop_runtime.cpp"
     "${TRAILMATE_ROOT}/apps/esp32_lvgl/src/esp32_lvgl_runtime_config.cpp")
diff --git a/builds/pio_nrf52/src/nrf52_node_wrapper_baseline.cpp b/builds/pio_nrf52/src/nrf52_node_wrapper_baseline.cpp
index 60660c80..ee11ac2d 100644
--- a/builds/pio_nrf52/src/nrf52_node_wrapper_baseline.cpp
+++ b/builds/pio_nrf52/src/nrf52_node_wrapper_baseline.cpp
@@ -1,4 +1,3 @@
-#include "nrf52_historical_source_descriptor.h"
 #include "nrf52_node_app_shell.h"
 
 namespace
@@ -11,13 +10,7 @@ bool g_wrapper_valid = false;
 extern "C" void setup()
 {
     trailmate::apps::nrf52_node::Nrf52NodeAppShell shell;
-    const auto& historical_source =
-        trailmate::apps::nrf52_node::nrf52HistoricalSourceDescriptor();
-    g_wrapper_valid = shell.validate() &&
-                      historical_source.historical_generic_root_name != nullptr &&
-                      historical_source.historical_board_root_name != nullptr &&
-                      historical_source.historical_role != nullptr &&
-                      historical_source.replacement_owner != nullptr;
+    g_wrapper_valid = shell.validate();
 }
 
 extern "C" void loop()
diff --git a/docs/audits/ESP_IDF_FINAL_OWNER_MIGRATION_PLAN.md b/docs/audits/ESP_IDF_FINAL_OWNER_MIGRATION_PLAN.md
index 4b9b263a..24320f31 100644
--- a/docs/audits/ESP_IDF_FINAL_OWNER_MIGRATION_PLAN.md
+++ b/docs/audits/ESP_IDF_FINAL_OWNER_MIGRATION_PLAN.md
@@ -44,8 +44,7 @@ entrypoints must not compile or include it.
 ## Delete Condition For `esp_idf_legacy_implementation_adapter`
 
 - no new calls are added;
-- `apps/esp32_lvgl` uses `esp32_lvgl_historical_source_descriptor` for
-  historical identity;
+- historical descriptor retired from active app shell;
 - build/component/source ownership no longer requires compiling
   `esp_idf_legacy_implementation_adapter.cpp`;
 - active checker forbids new ESP-IDF legacy adapter callers.
diff --git a/docs/audits/LEGACY_COMPAT_TEMP_SURFACE_INVENTORY.md b/docs/audits/LEGACY_COMPAT_TEMP_SURFACE_INVENTORY.md
index 8646a6d0..da7066f7 100644
--- a/docs/audits/LEGACY_COMPAT_TEMP_SURFACE_INVENTORY.md
+++ b/docs/audits/LEGACY_COMPAT_TEMP_SURFACE_INVENTORY.md
@@ -258,8 +258,7 @@ Current location:
 
 Current callers:
 - docs and checkers recognize it as archive-only.
-- final app shell records it through
-  `apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.*`.
+- active app shells do not retain source-descriptor metadata for it.
 
 Current responsibility:
 - archive-only historical simulator source and scripts.
@@ -284,7 +283,8 @@ Delete condition:
 - Satisfied by Batch 4 Root Legacy Elimination.
 
 Risk:
-- medium; source is archive-only but still referenced by descriptors and docs.
+- low-medium; source is archive-only and now referenced only by historical
+  documentation and retirement checkers.
 
 ## Surface: legacy/app_implementations/linux_uconsole
 
@@ -299,8 +299,7 @@ Current location:
 
 Current callers:
 - docs and checkers recognize it as archive-only.
-- final app shell records it through
-  `apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.*`.
+- active app shells do not retain source-descriptor metadata for it.
 
 Current responsibility:
 - archive-only historical uConsole GTK source, packaging files, scripts, and
@@ -327,7 +326,8 @@ Delete condition:
 
 Risk:
 - high; this archive still contains real business/page/packaging history that
-  must be migrated or deliberately replaced before deletion.
+  must be migrated or deliberately replaced before deletion, but no active app
+  shell descriptor keeps it alive.
 
 ## Surface: legacy/app_implementations/linux_unoq
 
@@ -379,7 +379,6 @@ Current location:
 
 Current callers:
 - docs and inventory only after Batch 2.
-- `apps/esp32_lvgl` uses `esp32_lvgl_historical_source_descriptor.*`.
 - `builds/esp_idf/ESP_IDF_COMPONENT_SOURCES.cmake` owns migrated ESP-IDF
   source lists.
 
@@ -390,8 +389,8 @@ Is this final architecture?
 - No.
 
 Final owner:
-- `apps/esp32_lvgl` for app shell metadata and `builds/esp_idf` for build
-  entrypoint wiring.
+- `apps/esp32_lvgl` for app shell/runtime ownership and `builds/esp_idf` for
+  build entrypoint wiring.
 
 Disposition:
 - Deleted.
@@ -419,8 +418,6 @@ Current location:
 
 Current callers:
 - docs and inventory only after Batch 1.
-- `builds/pio_nrf52/src/nrf52_node_wrapper_baseline.cpp` now uses
-  `apps/nrf52_node/src/nrf52_historical_source_descriptor.*`.
 - `builds/pio_nrf52/platformio.ini` no longer adds the legacy root include path.
 
 Current responsibility:
@@ -527,144 +524,152 @@ Risk:
 ## Surface: linux_sim_historical_source_descriptor (formerly linux_sim_legacy_source_descriptor)
 
 Category:
-- transitional descriptors
+- retired descriptors
 
 Current location:
-- `apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.*`
-- `apps/linux_sim_shell/tests/linux_sim_historical_source_descriptor_smoke.cpp`
+- removed from active app source and tests.
 
 Current callers:
-- `apps/linux_sim_shell/src/linux_sim_app_shell.*`
-- `apps/linux_sim_shell/CMakeLists.txt`
-- `tools/architecture/check_legacy_app_roots_burndown_ready.py`
-- `tools/architecture/check_phase8_layout_ready.py`
+- none from active app or build code.
+- `tools/architecture/check_legacy_disposition_execution_ready.py` and
+  `tools/architecture/check_no_root_legacy_ready.py` assert it stays retired.
 
 Current responsibility:
-- records `historical_root_name`, `historical_role`, and replacement owner
-  metadata for the final LinuxSim app shell.
+- Historical descriptor retired from active app shell. Removed root history is
+  documented only in `docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 Is this final architecture?
-- No.
+- Yes.
 
 Final owner:
-- `apps/linux_sim_shell` as historical source metadata, not runtime-reachable
-  legacy root path.
+- `apps/linux_sim_shell` owns the app shell; docs/archive owns removed root
+  history.
 
 Disposition:
-- Must Rename.
+- Deleted.
+
+Final status:
+- Historical descriptor retired from active app shell.
 
 Delete condition:
-- rename to historical source descriptor or delete once docs/archive records
-  the legacy root history; remove the concrete `legacy/...` root_path field.
-  Batch 1 completed the rename and removed the `root_path` field.
+- Satisfied once docs/archive records removed root history and active app/build
+  code has no descriptor files, targets, includes, or fields.
 
 Risk:
-- medium; app shell validation currently reads this descriptor.
+- low; app shell validation no longer reads this descriptor.
 
 ## Surface: linux_uconsole_gtk_historical_source_descriptor (formerly linux_uconsole_gtk_legacy_source_descriptor)
 
 Category:
-- transitional descriptors
+- retired descriptors
 
 Current location:
-- `apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.*`
-- `apps/linux_uconsole_gtk/tests/linux_uconsole_gtk_historical_source_descriptor_smoke.cpp`
+- removed from active app source and tests.
 
 Current callers:
-- `apps/linux_uconsole_gtk/src/linux_uconsole_gtk_app_shell.*`
-- `apps/linux_uconsole_gtk/CMakeLists.txt`
-- `tools/architecture/check_legacy_app_roots_burndown_ready.py`
-- `tools/architecture/check_phase8_layout_ready.py`
+- none from active app or build code.
+- `tools/architecture/check_legacy_disposition_execution_ready.py` and
+  `tools/architecture/check_no_root_legacy_ready.py` assert it stays retired.
 
 Current responsibility:
-- records `historical_root_name`, `historical_role`, and replacement owner
-  metadata for the final uConsole GTK app shell.
+- Historical descriptor retired from active app shell. Removed root history is
+  documented only in `docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 Is this final architecture?
-- No.
+- Yes.
 
 Final owner:
-- `apps/linux_uconsole_gtk` as historical source metadata, plus
-  `builds/linux_cmake` for package/build metadata.
+- `apps/linux_uconsole_gtk` owns the app shell; `builds/linux_cmake` owns
+  build metadata; docs/archive owns removed root history.
 
 Disposition:
-- Must Rename.
+- Deleted.
+
+Final status:
+- Historical descriptor retired from active app shell.
 
 Delete condition:
-- rename to historical source descriptor or delete once docs/archive records
-  the legacy root history; remove the concrete `legacy/...` root_path field.
-  Batch 1 completed the rename and removed the `root_path` field.
+- Satisfied once docs/archive records removed root history and active app/build
+  code has no descriptor files, targets, includes, or fields.
 
 Risk:
-- high; it currently hides the fact that uConsole archive still contains
-  page and packaging material that may need migration.
+- medium; uConsole history is still important, but no descriptor keeps it in
+  the active app shell.
 
 ## Surface: nrf52_historical_source_descriptor
 
 Category:
-- transitional descriptors
+- retired descriptors
 
 Current location:
-- `apps/nrf52_node/src/nrf52_historical_source_descriptor.*`
-- `apps/nrf52_node/tests/nrf52_historical_source_descriptor_smoke.cpp`
+- removed from active app source and tests.
 
 Current callers:
-- `apps/nrf52_node/src/nrf52_node_app_shell.*`
-- `builds/pio_nrf52/src/nrf52_node_wrapper_baseline.cpp`
+- none from active app or build code.
+- `tools/architecture/check_legacy_disposition_execution_ready.py` and
+  `tools/architecture/check_no_root_legacy_ready.py` assert it stays retired.
 
 Current responsibility:
-- records historical PIO and GAT562 root identity after active wrapper stopped
-  including `nrf52_pio_legacy_implementation_adapter.h`.
+- Historical descriptor retired from active app shell. Removed root history is
+  documented only in `docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 Is this final architecture?
-- No as a permanent source descriptor; yes as a short-lived historical record
-  during root deletion preparation.
+- Yes.
 
 Final owner:
-- `apps/nrf52_node`, `builds/pio_nrf52`, and `boards/gat562_mesh_evb_pro`.
+- `apps/nrf52_node`, `builds/pio_nrf52`, and
+  `boards/gat562_mesh_evb_pro`; docs/archive owns removed root history.
 
 Disposition:
-- Must Rename.
+- Deleted.
+
+Final status:
+- Historical descriptor retired from active app shell.
 
 Delete condition:
-- delete once `docs/archive` records removed root history and PIO/GAT562 source
-  ownership no longer requires historical source identity in app/runtime code.
+- Satisfied once docs/archive records removed root history and active app/build
+  code has no descriptor files, targets, includes, or fields.
 
 Risk:
-- medium; it is intentionally metadata-only and does not expose a root path
-  field, but it still names historical roots.
+- low-medium; the wrapper no longer compiles or includes this descriptor.
 
 ## Surface: esp32_lvgl_historical_source_descriptor
 
 Category:
-- transitional descriptors
+- retired descriptors
 
 Current location:
-- `apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.*`
-- `apps/esp32_lvgl/tests/esp32_lvgl_historical_source_descriptor_smoke.cpp`
+- removed from active app source and tests.
 
 Current callers:
-- `apps/esp32_lvgl/src/esp32_lvgl_app_shell.*`
+- none from active app or build code.
+- `tools/architecture/check_legacy_disposition_execution_ready.py` and
+  `tools/architecture/check_no_root_legacy_ready.py` assert it stays retired.
 
 Current responsibility:
-- records historical ESP-IDF root identity while the ESP-IDF final owner
-  migration plan is established.
+- Historical descriptor retired from active app shell. Removed root history is
+  documented only in `docs/archive/REMOVED_LEGACY_ROOTS.md`.
 
 Is this final architecture?
-- No as a permanent source descriptor; it is a migration landing record only.
+- Yes.
 
 Final owner:
-- `apps/esp32_lvgl` and `builds/esp_idf`.
+- `apps/esp32_lvgl` and `builds/esp_idf`; docs/archive owns removed root
+  history.
 
 Disposition:
-- Must Rename.
+- Deleted.
+
+Final status:
+- Historical descriptor retired from active app shell.
 
 Delete condition:
-- delete once ESP-IDF component/source ownership has moved out of
-  `legacy/app_implementations/esp_idf` and historical root removal is recorded.
+- Satisfied once docs/archive records removed root history and active app/build
+  code has no descriptor files, targets, includes, or fields.
 
 Risk:
-- medium-high; ESP-IDF is still an active build dependency.
+- medium; ESP-IDF remains an active build path, but descriptor metadata is no
+  longer part of the app shell contract.
 
 ## Surface: ui_headless_runtime descriptor consumer
 
diff --git a/tools/architecture/check_legacy_disposition_execution_ready.py b/tools/architecture/check_legacy_disposition_execution_ready.py
index ea7d305f..2d452dde 100644
--- a/tools/architecture/check_legacy_disposition_execution_ready.py
+++ b/tools/architecture/check_legacy_disposition_execution_ready.py
@@ -8,9 +8,13 @@ from pathlib import Path
 
 ROOT = Path(__file__).resolve().parents[2]
 INVENTORY = "docs/audits/LEGACY_COMPAT_TEMP_SURFACE_INVENTORY.md"
+GENERATED_BUILD_PREFIXES = (
+    "builds/linux_cmake/build/",
+    "builds/pio_nrf52/.pio/",
+)
 
 
-HISTORICAL_DESCRIPTOR_FILES = [
+RETIRED_HISTORICAL_DESCRIPTOR_FILES = [
     "apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.h",
     "apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.cpp",
     "apps/linux_sim_shell/tests/linux_sim_historical_source_descriptor_smoke.cpp",
@@ -57,8 +61,12 @@ def iter_files(base: Path):
     if not base.exists():
         return
     for path in base.rglob("*"):
-        if path.is_file():
-            yield path
+        if not path.is_file():
+            continue
+        rel = path.relative_to(ROOT).as_posix()
+        if rel.startswith(GENERATED_BUILD_PREFIXES):
+            continue
+        yield path
 
 
 def check_no_legacy_source_descriptor_files(failures: list[str]) -> None:
@@ -66,66 +74,37 @@ def check_no_legacy_source_descriptor_files(failures: list[str]) -> None:
         rel = path.relative_to(ROOT).as_posix()
         if "legacy_source_descriptor" in rel:
             failures.append(f"apps/ still contains legacy_source_descriptor file: {rel}")
+        if "historical_source_descriptor" in rel:
+            failures.append(f"apps/ still contains historical_source_descriptor file: {rel}")
 
 
-def check_historical_descriptors(failures: list[str]) -> None:
-    for rel in HISTORICAL_DESCRIPTOR_FILES:
-        require_file(rel, failures)
+def check_historical_descriptors_retired(failures: list[str]) -> None:
+    for rel in RETIRED_HISTORICAL_DESCRIPTOR_FILES:
+        if (ROOT / rel).exists():
+            failures.append(
+                f"historical descriptor must stay retired from active app surface: {rel}"
+            )
 
     forbidden = [
-        'root_path = "legacy/',
-        "active_root",
-        "source_root_path",
+        "historical_source_descriptor",
+        "HistoricalSourceDescriptor",
+        "historical_root_name",
+        "historical_generic_root_name",
+        "historical_board_root_name",
+        "replacement_owner",
     ]
-    for rel in HISTORICAL_DESCRIPTOR_FILES:
-        path = ROOT / rel
-        if not path.is_file():
-            continue
-        text = read(rel)
-        for token in forbidden:
-            if token in text:
-                failures.append(f"{rel} contains forbidden historical descriptor token: {token}")
-
-    require_tokens(
-        "apps/linux_sim_shell/src/linux_sim_historical_source_descriptor.h",
-        [
-            "LinuxSimHistoricalSourceDescriptor",
-            "historical_root_name",
-            "historical_role",
-            "replacement_owner",
-        ],
-        failures,
-    )
-    require_tokens(
-        "apps/linux_uconsole_gtk/src/linux_uconsole_gtk_historical_source_descriptor.h",
-        [
-            "LinuxUConsoleGtkHistoricalSourceDescriptor",
-            "historical_root_name",
-            "historical_role",
-            "replacement_owner",
-        ],
-        failures,
-    )
-    require_tokens(
-        "apps/nrf52_node/src/nrf52_historical_source_descriptor.h",
-        [
-            "Nrf52HistoricalSourceDescriptor",
-            "historical_generic_root_name",
-            "historical_board_root_name",
-            "replacement_owner",
-        ],
-        failures,
-    )
-    require_tokens(
-        "apps/esp32_lvgl/src/esp32_lvgl_historical_source_descriptor.h",
-        [
-            "Esp32LvglHistoricalSourceDescriptor",
-            "historical_root_name",
-            "historical_role",
-            "replacement_owner",
-        ],
-        failures,
-    )
+    scanned_suffixes = {".h", ".hpp", ".cpp", ".cc", ".cxx", ".cmake", ".ini", ".json"}
+    for root_name in ["apps", "builds", "cmake"]:
+        for path in iter_files(ROOT / root_name):
+            if path.suffix not in scanned_suffixes and path.name != "CMakeLists.txt":
+                continue
+            rel = path.relative_to(ROOT).as_posix()
+            text = path.read_text(encoding="utf-8", errors="ignore")
+            for token in forbidden:
+                if token in text:
+                    failures.append(
+                        f"{rel} contains retired historical descriptor token: {token}"
+                    )
 
 
 def check_nrf52_gat562_final_owner_surface(failures: list[str]) -> None:
@@ -217,6 +196,7 @@ def check_esp_idf_landing_plan(failures: list[str]) -> None:
             "team_ui_store",
             "idf_entry",
             "esp_idf_legacy_implementation_adapter",
+            "historical descriptor retired from active app shell",
             "no ESP-IDF legacy root is deleted",
         ],
         failures,
@@ -231,7 +211,7 @@ def check_inventory_updated(failures: list[str]) -> None:
     for token in [
         "linux_sim_historical_source_descriptor (formerly linux_sim_legacy_source_descriptor)",
         "linux_uconsole_gtk_historical_source_descriptor (formerly linux_uconsole_gtk_legacy_source_descriptor)",
-        "Batch 1 completed the rename and removed the `root_path` field",
+        "Historical descriptor retired from active app shell",
         "nrf52_historical_source_descriptor",
         "esp32_lvgl_historical_source_descriptor",
         "ui_headless_runtime descriptor consumer",
@@ -262,7 +242,7 @@ def main() -> int:
     failures: list[str] = []
 
     check_no_legacy_source_descriptor_files(failures)
-    check_historical_descriptors(failures)
+    check_historical_descriptors_retired(failures)
     check_nrf52_gat562_final_owner_surface(failures)
     check_pio_nrf52_legacy_dependency_extracted(failures)
     check_esp_idf_landing_plan(failures)
diff --git a/tools/architecture/check_no_root_legacy_ready.py b/tools/architecture/check_no_root_legacy_ready.py
index a517fd46..00358b76 100644
--- a/tools/architecture/check_no_root_legacy_ready.py
+++ b/tools/architecture/check_no_root_legacy_ready.py
@@ -14,14 +14,22 @@ ACTIVE_ROOTS = [
     "boards",
     "cmake",
 ]
+GENERATED_BUILD_PREFIXES = (
+    "builds/linux_cmake/build/",
+    "builds/pio_nrf52/.pio/",
+)
 
 
 def iter_files(base: Path):
     if not base.exists():
         return
     for path in base.rglob("*"):
-        if path.is_file():
-            yield path
+        if not path.is_file():
+            continue
+        rel = path.relative_to(ROOT).as_posix()
+        if rel.startswith(GENERATED_BUILD_PREFIXES):
+            continue
+        yield path
 
 
 def read(path: Path) -> str:
@@ -30,6 +38,14 @@ def read(path: Path) -> str:
 
 def main() -> int:
     failures: list[str] = []
+    retired_historical_descriptor_tokens = [
+        "historical_source_descriptor",
+        "HistoricalSourceDescriptor",
+        "historical_root_name",
+        "historical_generic_root_name",
+        "historical_board_root_name",
+        "replacement_owner",
+    ]
 
     if (ROOT / "legacy").exists():
         failures.append("root legacy/ directory must not exist")
@@ -46,6 +62,16 @@ def main() -> int:
                 failures.append(
                     f"{rel} contains forbidden legacy_source_descriptor filename"
                 )
+            if root_name in {"apps", "builds", "cmake"}:
+                if "historical_source_descriptor" in rel:
+                    failures.append(
+                        f"{rel} contains forbidden historical_source_descriptor filename"
+                    )
+                for token in retired_historical_descriptor_tokens:
+                    if token in text:
+                        failures.append(
+                            f"{rel} contains retired historical descriptor token: {token}"
+                        )
 
     if not (ROOT / "docs/archive/REMOVED_LEGACY_ROOTS.md").is_file():
         failures.append("missing docs/archive/REMOVED_LEGACY_ROOTS.md")