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/connection.rs

@@ -4,7 +4,7 @@ use std::time::Duration;
 
 use crossbeam_channel::{self, Receiver, Sender, TryRecvError};
 
-use crate::serial_core::serial::{run_serial_loop, SerialPortReadWrite};
+use crate::serial_core::serial::{SerialPortReadWrite, run_serial_loop};
 
 /// Connection state visible to the UI.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -115,11 +115,7 @@ impl ConnectionManager {
                         let rows = 12u32;
                         let cols = 7u32;
                         let matrix = vals.iter().map(|v| (*v).max(0) as u32).collect();
-                        last = Some(PressureSample {
-                            matrix,
-                            rows,
-                            cols,
-                        });
+                        last = Some(PressureSample { matrix, rows, cols });
                     }
                     Err(TryRecvError::Empty) => break,
                     Err(TryRecvError::Disconnected) => break,
@@ -174,11 +170,7 @@ fn run_device_loop(
                 Ok(vals) => {
                     // Store latest
                     let matrix = vals.iter().map(|v| (*v).max(0) as u32).collect();
-                    *latest.lock().unwrap() = Some(PressureSample {
-                        matrix,
-                        rows,
-                        cols,
-                    });
+                    *latest.lock().unwrap() = Some(PressureSample { matrix, rows, cols });
                     // Forward
                     let _ = outer_tx.try_send(vals);
                 }
@@ -194,4 +186,4 @@ fn run_device_loop(
 
     let _ = bridge_handle.join();
     Ok(())
-}
+}