fix: P0审查修复 — CLAUDE.md数据更新 + load_module malloc→arena

src/parser/parser.c

@@ -1008,14 +1008,13 @@ static AstNode* load_module(Arena* a, const char* parent_file,
     }
     fseek(f, 0, SEEK_END);
     size_t sz = ftell(f); fseek(f, 0, SEEK_SET);
-    char* src = malloc(sz + 1);
+    char* src = arena_alloc_impl(a, sz + 1);
     if (!src) { fclose(f); return NULL; }
     fread(src, 1, sz, f); src[sz] = '\0'; fclose(f);
 
     size_t tc;
     ErrorInfo lex_err = {0};
     Token* toks = lex(a, src, mod_path, &tc, &lex_err);
-    free(src);
     if (!toks) { *error = lex_err; return NULL; }
 
     AstNode* ast = parse(a, toks, tc, mod_path, error);