新增: df-relay binary 入口(main.rs axum WS Server :8080)

Phase3 联调链补 relay 启动入口:src/main.rs 调 DefaultRelayServer::start(listen 0.0.0.0:8080,DF_RELAY_ADDR env 覆盖)+ tracing-subscriber 日志。cargo run -p df-relay 启动,提供 /ws/device + /ws/miniapp 端点。cargo check EXIT=0。

Cargo.lock

@@ -977,6 +977,7 @@ dependencies = [
  "tokio",
  "tokio-tungstenite 0.23.1",
  "tracing",
+ "tracing-subscriber",
 ]
 
 [[package]]
@@ -2363,6 +2364,12 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "leb128fmt"
 version = "0.1.0"
@@ -2486,6 +2493,15 @@ dependencies = [
  "web_atoms",
 ]
 
+[[package]]
+name = "matchers"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
+dependencies = [
+ "regex-automata",
+]
+
 [[package]]
 name = "matchit"
 version = "0.7.3"
@@ -2631,6 +2647,15 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.50.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "num"
 version = "0.4.3"
@@ -3997,6 +4022,15 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "shlex"
 version = "2.0.1"
@@ -4657,6 +4691,15 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "time"
 version = "0.3.47"
@@ -5001,6 +5044,36 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
 dependencies = [
  "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex-automata",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
 ]
 
 [[package]]
@@ -5205,6 +5278,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "valuable"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"

crates/df-relay/Cargo.toml

@@ -12,6 +12,8 @@ async-trait = { workspace = true }
 thiserror = { workspace = true }
 anyhow = { workspace = true }
 tracing = { workspace = true }
+# binary 入口(main.rs)日志初始化
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 
 # HTTP + WS 服务端
 axum = { version = "0.7", features = ["ws"] }

crates/df-relay/src/main.rs

@@ -0,0 +1,21 @@
+//! df-relay binary 入口 — 启动跨端 AI Chat 云中继 axum WS Server。
+//!
+//! 监听 `0.0.0.0:8080`(`DF_RELAY_ADDR` env 覆盖),提供两个 WS 端点:
+//! - `/ws/device`:桌面端 df-tunnel 连入(Hello device 鉴权)
+//! - `/ws/miniapp`:小程序连入(按 device_id 配对路由)
+//!
+//! 纯转发中继,无业务逻辑。token 校验对齐 `DEFAULT_TOKEN`(relay.rs,可 `DF_RELAY_TOKEN` env 覆盖)。
+//!
+//! 联调启动:`cargo run -p df-relay`(或 `DF_RELAY_ADDR=0.0.0.0:8080 cargo run -p df-relay`)。
+
+use df_relay::{DefaultRelayServer, RelayServer};
+
+#[tokio::main]
+async fn main() -> df_relay::Result<()> {
+    tracing_subscriber::fmt::init();
+    // 监听地址:env 覆盖,默认 0.0.0.0:8080(对齐 df-miniapp config.ts relayHost + df-tunnel src-tauri 集成)。
+    let addr = std::env::var("DF_RELAY_ADDR").unwrap_or_else(|_| "0.0.0.0:8080".to_string());
+    tracing::info!(%addr, "[df-relay] 启动跨端中继 axum WS Server(/ws/device + /ws/miniapp)");
+    let server = DefaultRelayServer::new();
+    server.start(&addr).await
+}