feat: libra add reset subcommand.

aria/contents/docs/libra/command/reset/index.mdx

@@ -1,4 +1,46 @@
 ---
 title: The [reset] Command
-description:
+description: Reset current HEAD to the specified state
 ---
+
+### Usage
+
+libra reset [OPTIONS] [COMMIT] [--] [PATHSPEC]...
+
+### Arguments
+
+- [COMMIT] - The commit to reset to. Can be a commit hash, branch name, or a reference like HEAD. Defaults to HEAD if not specified.
+- [PATHSPEC]... - One or more file paths to reset. When specified, the reset operation only affects the index for these files, not the HEAD.
+
+### Description
+
+This command has two primary forms.
+
+In the first form, it resets the current branch head (HEAD) to [COMMIT] and possibly updates the index (staging area) and the working tree, depending on the chosen mode.
+
+- --soft – Does not touch the index file or the working tree at all. It only resets the HEAD to point to the given commit.
+- --mixed – Resets the index but not the working tree. This is the default mode. All changes are kept in the working directory but are unstaged.
+- --hard – Resets the index and working tree. Any changes to tracked files in the working tree since the target [COMMIT] are discarded.
+
+In the second form, if one or more [PATHSPEC] arguments are given, the command does not move the HEAD pointer. Instead, it resets the index entries for the specified paths to their state at the given [COMMIT]. This is commonly used to unstage changes.
+
+### Options
+
+- --soft
+  Performs a soft reset. Only the HEAD pointer is moved. The index and working directory are not changed.
+- --mixed
+  Performs a mixed reset. The HEAD pointer is moved and the index is reset to match. Changes in the working directory are kept but unstaged. This is the default mode.
+- --hard
+  Performs a hard reset. The HEAD pointer, index, and working directory are all reset to match the specified commit. All local changes are lost.
+- -h, --help
+  Print help
+### Example
+- libra reset --soft/mixed/hard commit
+- libra reset HEAD -- 1.txt 2.txt
+
+
+<Note type="note" title="Note">
+    All parameters should align with Git’s behavior as closely as possible, but
+    there may be some differences. Refs https://git-scm.com/docs/git-branch for
+    more information.
+</Note>

libra/src/cli.rs

@@ -53,6 +53,8 @@ enum Commands {
     Switch(command::switch::SwitchArgs),
     #[command(about = "Merge changes")]
     Merge(command::merge::MergeArgs),
+    #[command(about = "Reset current HEAD to specified state")]
+    Reset(command::reset::ResetArgs),
     #[command(about = "Update remote refs along with associated objects")]
     Push(command::push::PushArgs),
     #[command(about = "Download objects and refs from another repository")]
@@ -118,6 +120,7 @@ pub async fn parse_async(args: Option<&[&str]>) -> Result<(), GitError> {
         Commands::Commit(args) => command::commit::execute(args).await,
         Commands::Switch(args) => command::switch::execute(args).await,
         Commands::Merge(args) => command::merge::execute(args).await,
+        Commands::Reset(args) => command::reset::execute(args).await,
         Commands::Push(args) => command::push::execute(args).await,
         Commands::IndexPack(args) => command::index_pack::execute(args),
         Commands::Fetch(args) => command::fetch::execute(args).await,

libra/src/command/mod.rs

@@ -15,6 +15,7 @@ pub mod pull;
 pub mod push;
 pub mod remote;
 pub mod remove;
+pub mod reset;
 pub mod restore;
 pub mod status;
 pub mod switch;