fix: fence concurrent ZIP archive builds

src/config.rs

@@ -17,6 +17,9 @@ pub struct Config {
     pub worker_task_concurrency: u32,
     pub worker_concurrency: u32,
     pub image_processing_concurrency: u32,
+    pub zip_build_concurrency: u32,
+    pub zip_max_entries: u32,
+    pub zip_max_uncompressed_bytes: u64,
 
     pub jwt_secret: String,
     pub jwt_expiry_hours: i64,
@@ -81,6 +84,15 @@ impl Config {
                     .map(|v| v.get() as u32)
                     .unwrap_or(4)
             });
+        let zip_build_concurrency = env_u32("ZIP_BUILD_CONCURRENCY")
+            .filter(|value| *value > 0)
+            .unwrap_or(2);
+        let zip_max_entries = env_u32("ZIP_MAX_ENTRIES")
+            .filter(|value| *value > 0)
+            .unwrap_or(200);
+        let zip_max_uncompressed_bytes = env_u64("ZIP_MAX_UNCOMPRESSED_BYTES")
+            .filter(|value| *value > 0)
+            .unwrap_or(2 * 1024 * 1024 * 1024);
 
         let jwt_secret = env_string("JWT_SECRET")
             .ok_or_else(|| AppError::new(ErrorCode::InvalidRequest, "缺少环境变量 JWT_SECRET"))?;
@@ -140,6 +152,9 @@ impl Config {
             worker_task_concurrency,
             worker_concurrency,
             image_processing_concurrency,
+            zip_build_concurrency,
+            zip_max_entries,
+            zip_max_uncompressed_bytes,
             jwt_secret,
             jwt_expiry_hours,
             api_key_pepper,