diff --git a/cpp/apps/chart_demo/main.cpp b/cpp/apps/chart_demo/main.cpp
index f75f5c4d..fa50fae9 100644
--- a/cpp/apps/chart_demo/main.cpp
+++ b/cpp/apps/chart_demo/main.cpp
@@ -77,5 +77,12 @@ static void render() {
 }
 
 int main() {
-    return fn::run_app({.title = "fn_registry — Chart Demo", .width = 1400, .height = 900}, render);
+    return fn::run_app({
+        .title  = "fn_registry — Chart Demo",
+        .width  = 1400,
+        .height = 900,
+        .about  = {.name        = "chart demo",
+                   .version     = "0.1.0",
+                   .description = "Demo de primitivos viz: line, scatter, bar, heatmap"}
+    }, render);
 }
diff --git a/cpp/apps/primitives_gallery/main.cpp b/cpp/apps/primitives_gallery/main.cpp
index 3c15cdd3..f6e2488e 100644
--- a/cpp/apps/primitives_gallery/main.cpp
+++ b/cpp/apps/primitives_gallery/main.cpp
@@ -14,7 +14,6 @@
 #include "core/page_header.h"
 #include "core/toast.h"
 #include "core/app_menubar.h"
-#include "gfx/gl_loader.h"
 
 #include "demos.h"
 #include "demo.h"
@@ -124,15 +123,8 @@ static void draw_sidebar() {
 }
 
 static void render() {
-    static bool init_done = false;
-    if (!init_done) {
-        fn_tokens::apply_dark_theme();
-        // En Linux es no-op; en Windows resuelve los punteros GL via wglGetProcAddress.
-        // Imprescindible antes de invocar primitivos que usen OpenGL 2.0+ (graph_viewport,
-        // shader_canvas, etc).
-        fn::gfx::gl_loader_init();
-        init_done = true;
-    }
+    // Theme y gl_loader gestionados por fn::run_app (theme=FnDark por defecto,
+    // init_gl_loader=true en AppConfig).
 
     // MainMenuBar (solo Settings — la gallery no tiene paneles toggleables ni layouts)
     fn_ui::app_menubar(nullptr, 0, nullptr);
@@ -171,8 +163,14 @@ static void render() {
 
 int main(int /*argc*/, char** /*argv*/) {
     return fn::run_app(
-        {.title = "fn_registry · Primitives Gallery",
-         .width = 1400, .height = 900, .viewports = true},
+        {.title          = "fn_registry · Primitives Gallery",
+         .width          = 1400,
+         .height         = 900,
+         .viewports      = true,
+         .about          = {.name        = "Primitives Gallery",
+                            .version     = "0.1.0",
+                            .description = "Visual catalog of fn_registry C++ UI primitives"},
+         .init_gl_loader = true},
         render
     );
 }
diff --git a/cpp/apps/shaders_lab/main.cpp b/cpp/apps/shaders_lab/main.cpp
index 6c3d4067..c7ccb01f 100644
--- a/cpp/apps/shaders_lab/main.cpp
+++ b/cpp/apps/shaders_lab/main.cpp
@@ -16,7 +16,6 @@
 #include "gfx/shaderlab_db.h"
 #include "core/panel_menu.h"
 #include "core/layouts_menu.h"
-#include "core/app_menubar.h"
 #include "core/layout_storage.h"
 
 #include "compiler.h"
@@ -24,7 +23,6 @@
 #include <chrono>
 #include <cctype>
 #include <cstring>
-#include <iterator>
 #include <string>
 #include <utility>
 #include <vector>
@@ -73,6 +71,18 @@ static bool g_show_controls  = true;
 static bool g_show_functions = true;
 static bool g_show_generated = true;
 
+// Tabla de paneles toggleables que fn::run_app pasa a app_menubar cada frame.
+// Vive en el ambito del archivo para poder referenciarse desde main().
+static constexpr fn_ui::PanelToggle k_panels[] = {
+    {"Code",          "Ctrl+1", &g_show_code},
+    {"DAG Pipeline",  "Ctrl+2", &g_show_dag},
+    {"Canvas Code",   "Ctrl+3", &g_show_canvas_c},
+    {"Canvas DAG",    "Ctrl+4", &g_show_canvas_d},
+    {"Controls",      "Ctrl+5", &g_show_controls},
+    {"Functions",     "Ctrl+6", &g_show_functions},
+    {"Generated GLSL","Ctrl+7", &g_show_generated},
+};
+
 // ── Layouts (named ImGui ini snapshots persisted in shaders_lab.db) ───────
 // El storage opaco encapsula la BD y el blob pendiente. Los callbacks
 // envuelven save/apply/delete/reset y se pasan a app_menubar tal cual.
@@ -220,17 +230,8 @@ static void render() {
 
     ImGui::DockSpaceOverViewport(0, ImGui::GetMainViewport());
 
-    // --- Menubar (View + Layouts) ---
-    fn_ui::PanelToggle toggles[] = {
-        {"Code",          "Ctrl+1", &g_show_code},
-        {"DAG Pipeline",  "Ctrl+2", &g_show_dag},
-        {"Canvas Code",   "Ctrl+3", &g_show_canvas_c},
-        {"Canvas DAG",    "Ctrl+4", &g_show_canvas_d},
-        {"Controls",      "Ctrl+5", &g_show_controls},
-        {"Functions",     "Ctrl+6", &g_show_functions},
-        {"Generated GLSL","Ctrl+7", &g_show_generated},
-    };
-    fn_ui::app_menubar(toggles, std::size(toggles), &g_layout_cb);
+    // Menubar (View + Layouts + Settings + About) la invoca fn::run_app a
+    // partir de AppConfig::panels y AppConfig::layouts_cb.
 
     // --- Code window ---
     if (g_show_code) {
@@ -402,9 +403,15 @@ int main() {
     };
 
     fn::AppConfig cfg;
-    cfg.title  = "shaders_lab";
-    cfg.width  = 1600;
-    cfg.height = 900;
+    cfg.title       = "shaders_lab";
+    cfg.width       = 1600;
+    cfg.height      = 900;
+    cfg.about       = {.name        = "shaders_lab",
+                       .version     = "0.1.0",
+                       .description = "Live GLSL shader playground with DAG pipeline"};
+    cfg.panels      = k_panels;
+    cfg.panel_count = sizeof(k_panels) / sizeof(k_panels[0]);
+    cfg.layouts_cb  = &g_layout_cb;
     int rc = fn::run_app(cfg, render);
 
     fn::gfx::canvas_destroy(g_canvas_code);
diff --git a/dev/issues/0043-cpp-apps-standardize-shell.md b/dev/issues/completed/0043-cpp-apps-standardize-shell.md
similarity index 100%
rename from dev/issues/0043-cpp-apps-standardize-shell.md
rename to dev/issues/completed/0043-cpp-apps-standardize-shell.md