Implement file system API and add shutdown functionality for desktop builds

core/src/wasm_runner.c

@@ -1,6 +1,8 @@
 #include "wasm_runner.h"
+#include "nova64_fs.h"
 #include "nova64_internal.h"
 #include "wasm_export.h"
+#include <stdlib.h>
 
 struct wasm_runner_instance {
   void *native_instance;
@@ -9,8 +11,40 @@ struct wasm_runner_instance {
   wasm_runner_instance_t *next;
 };
 
+char error_buf[128];
+uint32_t stack_size = 8092, heap_size = 8092;
+
 bool wasm_runner_initialize(void) {
+
   wasm_runtime_init();
   nova64_log("WASM runtime initialized successfully.\n");
+
+  const char *module_file = "SYS:/init.wasm";
+  int32_t file_size = nova64_get_file_size(module_file);
+  if (file_size <= 0) {
+    nova64_log("Failed to determine WASM module size.\n");
+    return false;
+  }
+
+  unsigned char *buffer = malloc((size_t)file_size);
+  if (!buffer) {
+    nova64_log("Failed to allocate WASM module buffer.\n");
+    return false;
+  }
+
+  if (!nova64_read_file_to_buffer(module_file, buffer, (size_t)file_size)) {
+    nova64_log("Failed to read WASM module into buffer.\n");
+    free(buffer);
+    return false;
+  }
+
+  wasm_module_t module = wasm_runtime_load(buffer, (uint32_t)file_size,
+                                           error_buf, sizeof(error_buf));
+
+  wasm_module_inst_t module_inst = wasm_runtime_instantiate(
+      module, stack_size, heap_size, error_buf, sizeof(error_buf));
+
+  wasm_exec_env_t exec_env = wasm_runtime_create_exec_env(module_inst, stack_size);
+  
   return true;
 }