Rewrite README in Chinese and English, add drone examples

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

crates/pipeview-core/src/error.rs

@@ -0,0 +1,27 @@
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("I/O error: {0}")]
+    Io(#[from] std::io::Error),
+
+    #[error("Serial port error: {0}")]
+    Serial(#[from] serialport::Error),
+
+    #[error("Transport not connected")]
+    NotConnected,
+
+    #[error("Connection failed: {0}")]
+    ConnectionFailed(String),
+
+    #[error("Unsupported operation: {0}")]
+    Unsupported(String),
+
+    #[error("Protocol error: {0}")]
+    Protocol(String),
+
+    #[error("Script error: {0}")]
+    Script(String),
+}
+
+pub type Result<T> = std::result::Result<T, Error>;