feat: initialize workspace with clash-verge-draft and clash-verge-logging crates (#5489)

- Add Cargo.toml for workspace management, including dependencies and profiles.
- Create clash-verge-draft crate with basic structure, including a benchmark for Draft functionality.
- Implement Draft management with shared state and asynchronous modifications.
- Add tests for Draft functionality to ensure correctness.
- Create clash-verge-logging crate for logging utilities with structured log types and macros.
- Update src-tauri to use new crates and remove unnecessary configurations.
- Refactor existing code to utilize the new Draft and logging functionalities.

crates/clash-verge-draft/tests/test_me.rs

@@ -0,0 +1,269 @@
+#[cfg(test)]
+mod tests {
+    use anyhow::anyhow;
+    use clash_verge_draft::Draft;
+    use std::future::Future;
+    use std::pin::Pin;
+    use std::task::{Context, Poll, RawWaker, RawWakerVTable, Waker};
+
+    #[derive(Clone, Debug, Default, PartialEq)]
+    struct IVerge {
+        enable_auto_launch: Option<bool>,
+        enable_tun_mode: Option<bool>,
+    }
+
+    // Minimal single-threaded executor for immediately-ready futures
+    fn block_on_ready<F: Future>(fut: F) -> F::Output {
+        fn no_op_raw_waker() -> RawWaker {
+            fn clone(_: *const ()) -> RawWaker {
+                no_op_raw_waker()
+            }
+            fn wake(_: *const ()) {}
+            fn wake_by_ref(_: *const ()) {}
+            fn drop(_: *const ()) {}
+            static VTABLE: RawWakerVTable = RawWakerVTable::new(clone, wake, wake_by_ref, drop);
+            RawWaker::new(std::ptr::null(), &VTABLE)
+        }
+
+        let waker = unsafe { Waker::from_raw(no_op_raw_waker()) };
+        let mut cx = Context::from_waker(&waker);
+        let mut fut = Box::pin(fut);
+        loop {
+            match Pin::as_mut(&mut fut).poll(&mut cx) {
+                Poll::Ready(v) => return v,
+                Poll::Pending => std::thread::yield_now(),
+            }
+        }
+    }
+
+    #[test]
+    fn test_draft_basic_flow() {
+        let verge = IVerge {
+            enable_auto_launch: Some(true),
+            enable_tun_mode: Some(false),
+        };
+        let draft = Draft::new(verge);
+
+        // 读取正式数据（data_arc）
+        {
+            let data = draft.data_arc();
+            assert_eq!(data.enable_auto_launch, Some(true));
+            assert_eq!(data.enable_tun_mode, Some(false));
+        }
+
+        // 修改草稿（使用 edit_draft）
+        draft.edit_draft(|d| {
+            d.enable_auto_launch = Some(false);
+            d.enable_tun_mode = Some(true);
+        });
+
+        // 正式数据未变
+        {
+            let data = draft.data_arc();
+            assert_eq!(data.enable_auto_launch, Some(true));
+            assert_eq!(data.enable_tun_mode, Some(false));
+        }
+
+        // 草稿已变
+        {
+            let latest = draft.latest_arc();
+            assert_eq!(latest.enable_auto_launch, Some(false));
+            assert_eq!(latest.enable_tun_mode, Some(true));
+        }
+
+        // 提交草稿
+        draft.apply();
+
+        // 正式数据已更新
+        {
+            let data = draft.data_arc();
+            assert_eq!(data.enable_auto_launch, Some(false));
+            assert_eq!(data.enable_tun_mode, Some(true));
+        }
+
+        // 新一轮草稿并修改
+        draft.edit_draft(|d| {
+            d.enable_auto_launch = Some(true);
+        });
+        {
+            let latest = draft.latest_arc();
+            assert_eq!(latest.enable_auto_launch, Some(true));
+            assert_eq!(latest.enable_tun_mode, Some(true));
+        }
+
+        // 丢弃草稿
+        draft.discard();
+
+        // 丢弃后再次创建草稿，会从已提交重新 clone
+        {
+            draft.edit_draft(|d| {
+                // 原 committed 是 enable_auto_launch = Some(false)
+                assert_eq!(d.enable_auto_launch, Some(false));
+                // 再修改一下
+                d.enable_tun_mode = Some(false);
+            });
+            // 草稿中值已修改，但正式数据仍是 apply 后的值
+            let data = draft.data_arc();
+            assert_eq!(data.enable_auto_launch, Some(false));
+            assert_eq!(data.enable_tun_mode, Some(true));
+        }
+    }
+
+    #[test]
+    fn test_arc_pointer_behavior_on_edit_and_apply() {
+        let draft = Draft::new(IVerge {
+            enable_auto_launch: Some(true),
+            enable_tun_mode: Some(false),
+        });
+
+        // 初始 latest == committed
+        let committed = draft.data_arc();
+        let latest = draft.latest_arc();
+        assert!(std::sync::Arc::ptr_eq(&committed, &latest));
+
+        // 第一次 edit：由于与 committed 共享，Arc::make_mut 会克隆
+        draft.edit_draft(|d| d.enable_tun_mode = Some(true));
+        let committed_after_first_edit = draft.data_arc();
+        let draft_after_first_edit = draft.latest_arc();
+        assert!(!std::sync::Arc::ptr_eq(
+            &committed_after_first_edit,
+            &draft_after_first_edit
+        ));
+        // 提交会把 committed 指向草稿的 Arc
+        let prev_draft_ptr = std::sync::Arc::as_ptr(&draft_after_first_edit);
+        draft.apply();
+        let committed_after_apply = draft.data_arc();
+        assert_eq!(
+            std::sync::Arc::as_ptr(&committed_after_apply),
+            prev_draft_ptr
+        );
+
+        // 第二次编辑：此时草稿唯一持有（无其它引用），不应再克隆
+        // 获取草稿 Arc 的指针并立即丢弃本地引用，避免增加 strong_count
+        draft.edit_draft(|d| d.enable_auto_launch = Some(false));
+        let latest1 = draft.latest_arc();
+        let latest1_ptr = std::sync::Arc::as_ptr(&latest1);
+        drop(latest1); // 确保只有 Draft 内部持有草稿 Arc
+
+        // 再次编辑（unique，Arc::make_mut 不应克隆）
+        draft.edit_draft(|d| d.enable_tun_mode = Some(false));
+        let latest2 = draft.latest_arc();
+        let latest2_ptr = std::sync::Arc::as_ptr(&latest2);
+
+        assert_eq!(latest1_ptr, latest2_ptr, "Unique edit should not clone Arc");
+        assert_eq!(latest2.enable_auto_launch, Some(false));
+        assert_eq!(latest2.enable_tun_mode, Some(false));
+    }
+
+    #[test]
+    fn test_discard_restores_latest_to_committed() {
+        let draft = Draft::new(IVerge {
+            enable_auto_launch: Some(false),
+            enable_tun_mode: Some(false),
+        });
+
+        // 创建草稿并修改
+        draft.edit_draft(|d| d.enable_auto_launch = Some(true));
+        let committed = draft.data_arc();
+        let latest = draft.latest_arc();
+        assert!(!std::sync::Arc::ptr_eq(&committed, &latest));
+
+        // 丢弃草稿后 latest 应回到 committed
+        draft.discard();
+        let committed2 = draft.data_arc();
+        let latest2 = draft.latest_arc();
+        assert!(std::sync::Arc::ptr_eq(&committed2, &latest2));
+        assert_eq!(latest2.enable_auto_launch, Some(false));
+    }
+
+    #[test]
+    fn test_edit_draft_returns_closure_result() {
+        let draft = Draft::new(IVerge::default());
+        let ret = draft.edit_draft(|d| {
+            d.enable_tun_mode = Some(true);
+            123usize
+        });
+        assert_eq!(ret, 123);
+        let latest = draft.latest_arc();
+        assert_eq!(latest.enable_tun_mode, Some(true));
+    }
+
+    #[test]
+    fn test_with_data_modify_ok_and_replaces_committed() {
+        let draft = Draft::new(IVerge {
+            enable_auto_launch: Some(false),
+            enable_tun_mode: Some(false),
+        });
+
+        // 使用 with_data_modify 异步（立即就绪）地更新 committed
+        let res = block_on_ready(draft.with_data_modify(|mut v| async move {
+            v.enable_auto_launch = Some(true);
+            Ok((Box::new(*v), "done")) // Dereference v to get Box<T>
+        }));
+        assert_eq!(
+            {
+                #[allow(clippy::unwrap_used)]
+                res.unwrap()
+            },
+            "done"
+        );
+
+        let committed = draft.data_arc();
+        assert_eq!(committed.enable_auto_launch, Some(true));
+        assert_eq!(committed.enable_tun_mode, Some(false));
+    }
+
+    #[test]
+    fn test_with_data_modify_error_propagation() {
+        let draft = Draft::new(IVerge::default());
+
+        #[allow(clippy::unwrap_used)]
+        let err = block_on_ready(draft.with_data_modify(|v| async move {
+            drop(v);
+            Err::<(Box<IVerge>, ()), _>(anyhow!("boom"))
+        }))
+        .unwrap_err();
+
+        assert_eq!(format!("{err}"), "boom");
+    }
+
+    #[test]
+    fn test_with_data_modify_does_not_touch_existing_draft() {
+        let draft = Draft::new(IVerge {
+            enable_auto_launch: Some(false),
+            enable_tun_mode: Some(false),
+        });
+
+        // 创建草稿并修改
+        draft.edit_draft(|d| {
+            d.enable_auto_launch = Some(true);
+            d.enable_tun_mode = Some(true);
+        });
+        let draft_before = draft.latest_arc();
+        let draft_before_ptr = std::sync::Arc::as_ptr(&draft_before);
+
+        // 同时通过 with_data_modify 修改 committed
+        #[allow(clippy::unwrap_used)]
+        block_on_ready(draft.with_data_modify(|mut v| async move {
+            v.enable_auto_launch = Some(false); // 与草稿不同
+            Ok((Box::new(*v), ())) // Dereference v to get Box<T>
+        }))
+        .unwrap();
+
+        // 草稿应保持不变
+        let draft_after = draft.latest_arc();
+        assert_eq!(
+            std::sync::Arc::as_ptr(&draft_after),
+            draft_before_ptr,
+            "Existing draft should not be replaced by with_data_modify"
+        );
+        assert_eq!(draft_after.enable_auto_launch, Some(true));
+        assert_eq!(draft_after.enable_tun_mode, Some(true));
+
+        // 丢弃草稿后 latest == committed，且 committed 为异步修改结果
+        draft.discard();
+        let latest = draft.latest_arc();
+        assert_eq!(latest.enable_auto_launch, Some(false));
+        assert_eq!(latest.enable_tun_mode, Some(false));
+    }
+}