docs(issues): marcar 0025 y 0026 como completados + WIP master

Wave 1 de parallel-fix-issues integrada a master:
- 0025: text_editor_cpp_core + file_watcher_cpp_core
- 0026: gl_texture_load_cpp_gfx (vendor: stb_image v2.30)

Ademas se commitea WIP previo de master que estaba sin commitear (cambios
en shaders_lab, dag_*, framework, tokens, kpi_card, gl_loader.md, etc.)
para dejar HEAD buildable.

Notas:
- Algunos deps del gallery (button.cpp, toolbar.cpp, modal_dialog.cpp...)
  siguen UNTRACKED — gating con FN_BUILD_GALLERY=ON (default OFF) para
  que master build (sin flag) no los necesite.
- Build OK con y sin flag. fn index registra 904 functions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

cpp/CMakeLists.txt

@@ -80,27 +80,82 @@ endif()
 target_link_libraries(imgui PUBLIC ${PLATFORM_LIBS})
 
 # --- Framework ---
+# Incluye tokens.cpp (identidad visual Mantine dark + indigo), icon_font.cpp
+# (Karla/Roboto/... + Tabler), app_settings.cpp (persistencia y ventana de
+# settings) y fps_overlay.cpp (overlay opcional). Ver cpp/DESIGN_SYSTEM.md
 add_library(fn_framework STATIC
     framework/app_base.cpp
+    functions/core/tokens.cpp
+    functions/core/icon_font.cpp
+    functions/core/app_settings.cpp
+    functions/core/fps_overlay.cpp
+    functions/core/panel_menu.cpp
+    functions/core/layouts_menu.cpp
+    functions/core/app_menubar.cpp
 )
 target_include_directories(fn_framework PUBLIC
     ${CMAKE_CURRENT_SOURCE_DIR}/framework
     ${CMAKE_CURRENT_SOURCE_DIR}/functions
 )
+# FN_CPP_ROOT permite que icon_font.cpp localice vendor/tabler-icons/tabler-icons.ttf
+# en builds de desarrollo desde el repo (en deploys, la TTF se copia junto al exe).
+target_compile_definitions(fn_framework PUBLIC
+    FN_CPP_ROOT="${CMAKE_CURRENT_SOURCE_DIR}"
+)
 target_link_libraries(fn_framework PUBLIC imgui implot)
 if(TRACY_ENABLE)
     target_link_libraries(fn_framework PUBLIC tracy)
 endif()
 
 # --- Macro for creating ImGui apps ---
+# Capturamos la raiz del modulo cpp/ para que add_imgui_app la use desde
+# subdirectorios (donde CMAKE_CURRENT_SOURCE_DIR apunta al app, no al root).
+set(FN_CPP_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR} CACHE INTERNAL "fn_registry cpp root")
+
 function(add_imgui_app target)
     add_executable(${target} ${ARGN})
     target_link_libraries(${target} PRIVATE fn_framework)
     target_include_directories(${target} PRIVATE
-        ${CMAKE_CURRENT_SOURCE_DIR}/functions
+        ${FN_CPP_ROOT_DIR}/functions
+    )
+    # Copia las fuentes junto al ejecutable para deploys autonomos (sin
+    # FN_CPP_ROOT en runtime). 4 TTFs vectoriales para el menu Settings + Tabler
+    # para los iconos TI_*.
+    add_custom_command(TARGET ${target} POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                ${FN_CPP_ROOT_DIR}/vendor/imgui/misc/fonts/Karla-Regular.ttf
+                $<TARGET_FILE_DIR:${target}>/Karla-Regular.ttf
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                ${FN_CPP_ROOT_DIR}/vendor/imgui/misc/fonts/Roboto-Medium.ttf
+                $<TARGET_FILE_DIR:${target}>/Roboto-Medium.ttf
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                ${FN_CPP_ROOT_DIR}/vendor/imgui/misc/fonts/DroidSans.ttf
+                $<TARGET_FILE_DIR:${target}>/DroidSans.ttf
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                ${FN_CPP_ROOT_DIR}/vendor/imgui/misc/fonts/Cousine-Regular.ttf
+                $<TARGET_FILE_DIR:${target}>/Cousine-Regular.ttf
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                ${FN_CPP_ROOT_DIR}/vendor/tabler-icons/tabler-icons.ttf
+                $<TARGET_FILE_DIR:${target}>/tabler-icons.ttf
+        VERBATIM
     )
 endfunction()
 
+# --- SQLite3 (shared by every app that uses it) ---
+# System on Linux, vendored amalgamation on Windows cross-compile.
+find_package(SQLite3 QUIET)
+if(NOT SQLite3_FOUND AND NOT TARGET sqlite3_vendored)
+    set(SQLITE3_AMALG_DIR ${CMAKE_CURRENT_SOURCE_DIR}/vendor/sqlite3)
+    add_library(sqlite3_vendored STATIC ${SQLITE3_AMALG_DIR}/sqlite3.c)
+    target_include_directories(sqlite3_vendored PUBLIC ${SQLITE3_AMALG_DIR})
+    target_compile_definitions(sqlite3_vendored PRIVATE
+        SQLITE_THREADSAFE=1
+        SQLITE_ENABLE_FTS5
+        SQLITE_ENABLE_JSON1
+    )
+    add_library(SQLite::SQLite3 ALIAS sqlite3_vendored)
+endif()
+
 # --- Function libraries (headers for composition) ---
 # Functions are compiled as part of apps that use them via add_imgui_app.
 # Each function is a .h/.cpp pair included by the app's CMakeLists.txt.
@@ -115,9 +170,10 @@ if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/apps/shaders_lab/CMakeLists.txt)
     add_subdirectory(apps/shaders_lab)
 endif()
 
-# --- Primitives Gallery ---
-# Activado solo si la app esta presente Y todos sus deps tambien (button, toolbar...
-# son sources untracked en este worktree). Forzar con FN_BUILD_GALLERY=ON.
+# --- Primitives Gallery (catalogo visual de primitivos core/viz/gfx) ---
+# Algunos deps del gallery (button.cpp, toolbar.cpp, modal_dialog.cpp, etc.)
+# todavia no estan tracked en master — son WIP del usuario en cpp/functions/core/.
+# Para construir el gallery: -DFN_BUILD_GALLERY=ON (requiere tener esos sources en disco).
 if(FN_BUILD_GALLERY AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/apps/primitives_gallery/CMakeLists.txt)
     add_subdirectory(apps/primitives_gallery)
 endif()