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>

data.h

@@ -55,11 +55,14 @@ struct AppRow {
     std::string domain;
     std::string description;
     std::string framework;
+    std::string repo_url;
+    std::string dir_path;
 };
 
 struct AnalysisRow {
     std::string id;
     std::string name;
+    std::string lang;
     std::string domain;
     std::string description;
 };
@@ -73,6 +76,32 @@ struct TypeRow {
     std::string description;
 };
 
+struct VaultRow {
+    std::string id;
+    std::string name;
+    std::string path;
+    std::string description;
+    bool symlink = false;
+};
+
+struct ProjectRow {
+    std::string id;
+    std::string name;
+    std::string description;
+    int apps_count = 0;
+    int analyses_count = 0;
+    int vaults_count = 0;
+};
+
+struct ProjectDetail {
+    std::string id;   // "" si no hay seleccion; "orphans" para huerfanas
+    std::string name;
+    std::string description;
+    std::vector<AppRow> apps;
+    std::vector<AnalysisRow> analyses;
+    std::vector<VaultRow> vaults;
+};
+
 // All data loaded from registry.db in one shot
 struct RegistryData {
     RegistryStats stats;
@@ -84,6 +113,10 @@ struct RegistryData {
     std::vector<AppRow> apps;
     std::vector<AnalysisRow> analyses;
     std::vector<TypeRow> types;
+    std::vector<ProjectRow> projects;
+    int orphan_apps = 0;
+    int orphan_analyses = 0;
+    int orphan_vaults = 0;
 
     // For chart data (populated by prepare_chart_data)
     std::vector<std::string> lang_labels;