修复 DirectProject 校验清单合并

让校验函数返回已读取的项目清单

补齐附件在 Codex 输入转换中的分支；图片 part 已退役，只保留附件 part

apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/validation.rs

@@ -12,7 +12,7 @@ pub(crate) const MAX_DIRECT_CODEX_REFERENCES: usize = 32;
 pub(crate) fn validate_direct_codex_user_item(
     root: &Path,
     item: &DirectCodexUserItem,
-) -> Result<(), String> {
+) -> Result<GameCreationAppManifest, String> {
     let DirectCodexUserItem::Message(message) = item;
     if !matches!(message.role, DirectCodexUserRole::User) {
         return Err("DirectProject 只接受 user message item".to_string());
@@ -71,7 +71,7 @@ pub(crate) fn validate_direct_codex_user_item(
     if reference_count > MAX_DIRECT_CODEX_REFERENCES {
         return Err(format!("一次最多引用 {MAX_DIRECT_CODEX_REFERENCES} 个素材"));
     }
-    Ok(())
+    Ok(manifest)
 }
 
 pub(crate) fn validate_resource_id_and_manifest(

apps/ai-game-creator-shell/src-tauri/src/agent/direct_codex_user_item/wire.rs

@@ -176,6 +176,23 @@ pub(crate) fn direct_codex_user_item_to_codex_turn_input(
                     "text": runtime_region_summary(reference),
                 }));
             }
+            DirectCodexUserContentPart::AgcAttachmentReference(reference) => {
+                let mut summary = format!(
+                    "[附件：名称={}；类型={}；大小={} 字节",
+                    reference.name.trim(),
+                    reference.media_type.trim(),
+                    reference.size
+                );
+                if !reference.local_path.trim().is_empty() {
+                    summary.push_str(&format!("；项目路径={}", reference.local_path.trim()));
+                }
+                summary.push_str(&format!("；状态={}", reference.status.trim()));
+                summary.push(']');
+                input.push(serde_json::json!({
+                    "type": "text",
+                    "text": summary,
+                }));
+            }
         }
     }
     Ok(Value::Array(input))