feat: 添加 README，更新 .gitignore，移除 JE-Skin/eskin-finger-sdk

- 添加 README.md 项目文档
- 更新 .gitignore 排除 JE-Skin/、eskin-finger-sdk/ 及构建产物
- 从 git 跟踪中移除 JE-Skin 和 eskin-finger-sdk

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/serial_core/codec.rs

@@ -4,4 +4,4 @@ use std::time::Instant;
 pub trait Codec<F> {
     fn decode(&mut self, input: &[u8], session_started_at: Instant) -> Result<Vec<F>, CodecError>;
     fn encode(&self, frame: &F) -> Result<Vec<u8>, CodecError>;
-}
+}

src/serial_core/codecs/mod.rs

@@ -1 +1 @@
-pub mod tactile_a;
+pub mod tactile_a;

src/serial_core/codecs/tactile_a.rs

@@ -30,11 +30,7 @@ impl TactileACodec {
             .chunks_exact(2)
             .map(|chunk| {
                 let raw = u16::from_le_bytes([chunk[0], chunk[1]]) as i32;
-                if raw < 15 {
-                    0
-                } else {
-                    raw
-                }
+                if raw < 15 { 0 } else { raw }
             })
             .collect::<Vec<i32>>();
 
@@ -185,4 +181,4 @@ impl Codec<TactileAFrame> for TactileACodec {
             _ => Err(CodecError::InvalidFrameType),
         }
     }
-}
+}

src/serial_core/error.rs

@@ -48,4 +48,4 @@ impl fmt::Display for CodecError {
     }
 }
 
-impl std::error::Error for CodecError {}
+impl std::error::Error for CodecError {}

src/serial_core/frame.rs

@@ -33,4 +33,4 @@ pub enum TactileAFrameStatusCode {
 pub enum TactileAFrame {
     Req(TactileAReqFrame),
     Rep(TactileARepFrame),
-}
+}

src/serial_core/mod.rs

@@ -3,4 +3,4 @@ pub mod codecs;
 pub mod error;
 pub mod frame;
 pub mod serial;
-pub mod utils;
+pub mod utils;

src/serial_core/serial.rs

@@ -93,4 +93,4 @@ impl ReadWrite for SerialPortReadWrite {
     fn write_all(&mut self, buf: &[u8]) -> std::io::Result<()> {
         self.inner.write_all(buf)
     }
-}
+}

src/serial_core/utils.rs

@@ -7,4 +7,4 @@ pub fn calc_crc8_itu(c: &[u8]) -> u8 {
 
 pub fn elapsed_millis(start_at: Instant) -> u64 {
     start_at.elapsed().as_millis() as u64
-}
+}