chore: auto-commit (8 archivos)

- CMakeLists.txt
- app.md
- data_http.cpp
- data_http.h
- main.cpp
- tabs.cpp
- tabs.h
- appicon.ico

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

data_http.h

@@ -54,6 +54,20 @@ struct DagStepRow {
     std::string finished_at;
     long long   duration_ms = 0;
     std::string error;
+    std::string function_id;   // "" if not a function step
+};
+
+// Metadata de una funcion del registry (response shape de GET /api/functions/{id}).
+struct FnInfo {
+    std::string              id;
+    std::string              name;
+    std::string              description;
+    std::string              signature;
+    std::string              purity;       // "pure" | "impure"
+    std::string              domain;
+    std::string              lang;
+    std::vector<std::string> uses_functions;
+    std::vector<std::string> uses_types;
 };
 
 struct DagRunDetail {
@@ -86,4 +100,10 @@ bool get_run_http(const std::string& api_url, const std::string& run_id,
 bool trigger_dag_http(const std::string& api_url, const std::string& name,
                       std::string& out_run_id, std::string& out_error);
 
+// GET /api/functions/{function_id} -> rellena out con metadata del registry.
+// Devuelve false si red falla, status != 2xx, o JSON no parseable.
+bool get_function_http(const std::string& api_url,
+                       const std::string& function_id,
+                       FnInfo& out);
+
 } // namespace dag_ui