fix(execution): reimplemented the builtins

src/execution/execution.c

@@ -14,32 +14,7 @@
 #include "../utils/ast/ast.h"
 #include "../utils/hash_map/hash_map.h"
 
-// --- Helpers ---
 
-/**
- * @brief converts a linked list of command arguments to an argv array. Don't
- * forget to free the result
- *
- * @param command_list Linked list of command arguments
- * @return char** Array of command arguments suitable for execvp. Terminated by
- * NULL
- */
-
-/**
- * @brief Tries to execute a builtin command if the command matches a builtin
- *
- * @param argv Array of command arguments
- * @return int Exit status of the builtin command, or -1 if not a builtin
- */
-
-// --- Execution Core ---
-
-/**
- * @brief Executes a command represented by an ast_command structure
- *
- * @param command The command to execute
- * @return int The exit status of the command
- */
 
 // Refactored: delegates to helpers in execution_helpers.c
 #include "execution_helpers.h"