platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/routes_handlers_status.go

@@ -0,0 +1,43 @@
+package app
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"os"
+)
+
+func handleGetStatus(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	data, err := os.ReadFile(statusFilePath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			http.Error(w, "status file not found", http.StatusNotFound)
+			return
+		}
+		http.Error(w, "failed to read status file", http.StatusInternalServerError)
+		return
+	}
+
+	var st Status
+	if err := json.Unmarshal(data, &st); err != nil {
+		http.Error(w, "invalid status.json", http.StatusInternalServerError)
+		return
+	}
+
+	if st.Iface != "" && st.Iface != "-" && st.Table != "" && st.Table != "-" {
+		ok, err := checkPolicyRoute(st.Iface, st.Table)
+		if err != nil {
+			log.Printf("checkPolicyRoute error: %v", err)
+		} else {
+			st.PolicyRouteOK = &ok
+			st.RouteOK = &ok
+		}
+	}
+
+	writeJSON(w, http.StatusOK, st)
+}