Decouple parser from CommitRequest

tools/debug_arena.cpp

@@ -1,4 +1,5 @@
 #include "commit_request.hpp"
+#include "json_commit_request_parser.hpp"
 #include <cstring>
 #include <fstream>
 #include <iomanip>
@@ -361,19 +362,19 @@ int main(int argc, char *argv[]) {
 
   // Parse the commit request
   CommitRequest commit_request;
+  JsonCommitRequestParser parser;
 
   // Make a mutable copy for parsing (weaseljson requires mutable data)
   std::vector<char> mutable_json(json_content.begin(), json_content.end());
   mutable_json.push_back('\0'); // Null terminate for safety
 
-  bool parse_success =
-      commit_request.parse_json(mutable_json.data(), mutable_json.size() - 1);
+  bool parse_success = parser.parse(commit_request, mutable_json.data(),
+                                    mutable_json.size() - 1);
 
-  if (!parse_success || !commit_request.is_parse_complete()) {
+  if (!parse_success) {
     std::cerr << "Error: Failed to parse JSON" << std::endl;
-    if (commit_request.has_parse_error()) {
-      std::cerr << "Parse error: " << commit_request.get_parse_error()
-                << std::endl;
+    if (parser.has_parse_error()) {
+      std::cerr << "Parse error: " << parser.get_parse_error() << std::endl;
     }
     return 1;
   }