refactor: 迁移 server_utils 到独立 proxycast-server-utils crate

- 创建 crates/server-utils/ 独立 crate (1403 行, 0 Tauri 依赖)
- 包含响应解析、字符串处理、响应构建等工具函数
- 12 个测试全部通过 (3 单元测试 + 9 属性测试)
- src/server_utils.rs 改为 re-export 层

src-tauri/Cargo.lock

@@ -6675,6 +6675,7 @@ dependencies = [
  "proxycast-infra",
  "proxycast-processor",
  "proxycast-providers",
+ "proxycast-server-utils",
  "proxycast-services",
  "proxycast-terminal",
  "proxycast-websocket",
@@ -6867,6 +6868,21 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "proxycast-server-utils"
+version = "0.60.0"
+dependencies = [
+ "axum 0.7.9",
+ "futures",
+ "proptest",
+ "proxycast-core",
+ "regex",
+ "serde_json",
+ "tokio",
+ "tracing",
+ "uuid",
+]
+
 [[package]]
 name = "proxycast-services"
 version = "0.60.0"

src-tauri/Cargo.toml

@@ -20,6 +20,7 @@ proxycast-terminal = { path = "crates/terminal" }
 proxycast-credential = { path = "crates/credential" }
 proxycast-websocket = { path = "crates/websocket" }
 proxycast-processor = { path = "crates/processor" }
+proxycast-server-utils = { path = "crates/server-utils" }
 voice-core = { path = "crates/voice-core" }
 
 # 序列化
@@ -199,6 +200,7 @@ proxycast-terminal.workspace = true
 proxycast-credential.workspace = true
 proxycast-websocket.workspace = true
 proxycast-processor.workspace = true
+proxycast-server-utils.workspace = true
 voice-core.workspace = true
 
 # Tauri

src-tauri/crates/server-utils/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "proxycast-server-utils"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+proxycast-core = { path = "../core" }
+serde_json = { workspace = true }
+axum = { workspace = true }
+futures = { workspace = true }
+tracing = { workspace = true }
+uuid = { workspace = true }
+regex = { workspace = true }
+
+[dev-dependencies]
+proptest = { workspace = true }
+tokio = { workspace = true }