refactor bug report handlers to use centralized JSON response functions and add delete functionality

internal/handlers/response.go

@@ -0,0 +1,26 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// jsonError writes a JSON error response with the given status code and message.
+func jsonError(w http.ResponseWriter, status int, msg string) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(map[string]string{"error": msg})
+}
+
+// jsonOK writes a 200 JSON response with the given payload.
+func jsonOK(w http.ResponseWriter, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(v)
+}
+
+// jsonCreated writes a 201 JSON response with the given payload.
+func jsonCreated(w http.ResponseWriter, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	_ = json.NewEncoder(w).Encode(v)
+}