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>

views.h

@@ -1,10 +1,15 @@
 #pragma once
 
 #include "data.h"
+#include <string>
 
 // Draw the full dashboard. Call every frame.
 void draw_dashboard(RegistryData& data);
 
+// Called once from main.cpp after parsing --api to share the URL with the
+// views (for triggering reindex/add mutations).
+void views_set_api_url(const std::string& url);
+
 // Individual views (called by draw_dashboard)
 void draw_kpi_row(const RegistryStats& stats);
 void draw_charts(RegistryData& data, float height = 250.0f);
@@ -12,3 +17,4 @@ void draw_recent_functions(const std::vector<FunctionRow>& funcs);
 void draw_apps_list(const std::vector<AppRow>& apps);
 void draw_analysis_list(const std::vector<AnalysisRow>& analyses);
 void draw_types_list(const std::vector<TypeRow>& types);
+void draw_projects_list(RegistryData& data);