放宽 UI 生成代码文件上限

为生成 JavaScript 引入独立的 8 倍 State 大小上限

保留原子写入流程并让错误提示使用实际代码上限

apps/ai-game-creator-shell/src-tauri/src/ui_editor/persistence.rs

@@ -19,6 +19,7 @@ use typed_floats::tf32::StrictlyPositiveFinite;
 
 const UI_DESIGN_STATE_SCHEMA_VERSION: &str = "game-creator-ui-design-state.v1";
 const UI_DESIGN_STATE_MAX_BYTES: usize = 2 * 1024 * 1024;
+const UI_DESIGN_CODE_MAX_BYTES: usize = UI_DESIGN_STATE_MAX_BYTES * 8;
 const UI_DESIGN_STATE_MAX_IMAGES: usize = 4;
 const UI_DESIGN_STATE_MAX_SPRITES: usize = 1_024;
 pub(crate) const UI_DESIGN_STATE_MAX_NODES: usize = 10_000;
@@ -180,7 +181,12 @@ pub(crate) fn generate_ui_design_code_at(
     let (content, tree_exports, node_count) = render_ui_design_state_js(&document.state)?;
     let relative_path = format!("ui/generated-{}.js", generated_file_stem(&asset_id));
     let path = resolve_local_project_path(root, &relative_path)?;
-    write_ui_design_raw_file(&path, "UI 设计生成代码", content.as_bytes())?;
+    write_ui_design_raw_file_with_limit(
+        &path,
+        "UI 设计生成代码",
+        content.as_bytes(),
+        UI_DESIGN_CODE_MAX_BYTES,
+    )?;
     Ok(GenerateUiDesignCodeResult {
         relative_path,
         tree_count: tree_exports.len(),
@@ -438,8 +444,17 @@ fn serialize_ui_design_document(document: &PersistedUiDesignState) -> Result<Vec
 /// runtime sidecar protocol: a stable `.previous` is recoverable after a
 /// process crash, unlike a random `.replace.<pid>.<nonce>` file.
 fn write_ui_design_raw_file(path: &Path, label: &str, bytes: &[u8]) -> Result<(), String> {
-    if bytes.len() > UI_DESIGN_STATE_MAX_BYTES {
-        return Err(format!("{label} 超过 {UI_DESIGN_STATE_MAX_BYTES} 字节上限"));
+    write_ui_design_raw_file_with_limit(path, label, bytes, UI_DESIGN_STATE_MAX_BYTES)
+}
+
+fn write_ui_design_raw_file_with_limit(
+    path: &Path,
+    label: &str,
+    bytes: &[u8],
+    max_bytes: usize,
+) -> Result<(), String> {
+    if bytes.len() > max_bytes {
+        return Err(format!("{label} 超过 {max_bytes} 字节上限"));
     }
     let parent = path.parent().ok_or_else(|| format!("{label} 缺少父目录"))?;
     fs::create_dir_all(parent).map_err(|error| format!("创建 {label} 目录失败：{error}"))?;