feat: Settings submenu (Settings.../About...), git column, projects tab

- main.cpp: registrar info About via fn_ui::about_window_set_info
- views.cpp: nueva columna "Git" en la tabla Apps (remote/local/-)
- data.h/cpp + data_http.cpp: AppRow gana repo_url + dir_path
- views.cpp: actions bar (Reindex / + Add / Reload / inbox) y modal Add
- views.cpp: tab Projects con tree + detalle anidado
- data_http.cpp: load_projects_http, load_project_detail_http, http_post_*
- http_client.cpp: SO_RCVTIMEO en Windows como DWORD ms (timeout 5 ms bug)
- CMakeLists: limpieza de srcs duplicados con fn_framework
- app.md: notas operativas y estado actual

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

CMakeLists.txt

@@ -1,4 +1,5 @@
-# SQLite3: use system library on Linux, vendored amalgamation on Windows cross-compile
+# SQLite3: prefer the target created by the top-level CMakeLists. If running
+# stand-alone (without the parent project), fall back to building the amalgamation.
 find_package(SQLite3 QUIET)
 if(NOT SQLite3_FOUND AND NOT TARGET sqlite3_vendored)
     # Build from amalgamation
@@ -10,7 +11,6 @@ if(NOT SQLite3_FOUND AND NOT TARGET sqlite3_vendored)
         SQLITE_ENABLE_FTS5
         SQLITE_ENABLE_JSON1
     )
-    # Alias so we can use the same target name
     add_library(SQLite::SQLite3 ALIAS sqlite3_vendored)
 endif()
 
@@ -27,13 +27,21 @@ add_imgui_app(registry_dashboard
     ${CMAKE_SOURCE_DIR}/functions/viz/sparkline.cpp
     ${CMAKE_SOURCE_DIR}/functions/core/dashboard_panel.cpp
     ${CMAKE_SOURCE_DIR}/functions/core/dashboard_grid.cpp
-    ${CMAKE_SOURCE_DIR}/functions/core/fps_overlay.cpp
+    # fps_overlay y tokens viven en fn_framework
     ${CMAKE_SOURCE_DIR}/functions/core/fullscreen_window.cpp
-    # Design tokens + primitives (fase 1 y 2 del plan del dashboard)
-    ${CMAKE_SOURCE_DIR}/functions/core/tokens.cpp
     ${CMAKE_SOURCE_DIR}/functions/core/badge.cpp
     ${CMAKE_SOURCE_DIR}/functions/core/empty_state.cpp
     ${CMAKE_SOURCE_DIR}/functions/core/page_header.cpp
+    # Fase 3: UI primitives (projects + reindex + add modals)
+    ${CMAKE_SOURCE_DIR}/functions/core/button.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/icon_button.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/toolbar.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/modal_dialog.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/text_input.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/select.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/toast.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/process_runner.cpp
+    ${CMAKE_SOURCE_DIR}/functions/core/tree_view.cpp
 )
 
 target_include_directories(registry_dashboard PRIVATE