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>

tools/test_drone.py

@@ -0,0 +1,102 @@
+#!/usr/bin/env python3
+"""Generate fake drone telemetry data for testing pipeview Lua decoder."""
+
+import argparse
+import math
+import random
+import socket
+import time
+
+
+def generate_line(t: float) -> str:
+    """Generate one telemetry line with simulated sensor values."""
+    # Quaternion (w, x, y, z) — gently rotating
+    angle = t * 0.5
+    qw = math.cos(angle)
+    qx = math.sin(angle) * 0.1
+    qy = math.sin(angle) * 0.05
+    qz = math.sin(angle) * 0.02
+
+    # Yaw/Pitch/Roll — sine wave simulation
+    yaw = math.degrees(math.sin(t * 0.3)) * 30
+    pitch = math.degrees(math.sin(t * 0.5)) * 15
+    roll = math.degrees(math.sin(t * 0.7)) * 10
+
+    # Gyro (deg/s)
+    gz = math.sin(t * 0.3) * 50 + random.uniform(-2, 2)
+    gy = math.sin(t * 0.5) * 30 + random.uniform(-2, 2)
+    gx = math.sin(t * 0.7) * 20 + random.uniform(-2, 2)
+
+    # RC channels (1000-2000 us)
+    rc_r = int(1500 + math.sin(t * 0.3) * 200)
+    rc_p = int(1500 + math.sin(t * 0.5) * 150)
+    rc_t = int(1000 + (math.sin(t * 0.1) + 1) * 500)  # throttle 1000-2000
+    rc_y = int(1500 + math.sin(t * 0.3) * 100)
+
+    # Motors (1000-2000)
+    base = 1200 + int((math.sin(t * 0.1) + 1) * 400)
+    m1 = base + random.randint(-20, 20)
+    m2 = base + random.randint(-20, 20)
+    m3 = base + random.randint(-20, 20)
+    m4 = base + random.randint(-20, 20)
+
+    return (
+        f"AHRS q:{qw:.4f},{qx:.4f},{qy:.4f},{qz:.4f}|"
+        f"YPR:{yaw:.2f},{pitch:.2f},{roll:.2f}|"
+        f"Gyro:{gz:.2f},{gy:.2f},{gx:.2f}|"
+        f"RC:{rc_r},{rc_p},{rc_t},{rc_y}|"
+        f"M:{m1},{m2},{m3},{m4}|"
+        f"L:0 F:1 C:0\n"
+    )
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Drone telemetry test data generator")
+    parser.add_argument("--host", default="127.0.0.1", help="TCP host")
+    parser.add_argument("--port", type=int, default=8092, help="TCP port")
+    parser.add_argument("--rate", type=float, default=10, help="Lines per second")
+    parser.add_argument("--duration", type=float, default=0, help="Seconds to run (0 = forever)")
+    args = parser.parse_args()
+
+    interval = 1.0 / args.rate
+    print(f"Sending drone telemetry to {args.host}:{args.port} at {args.rate} Hz")
+
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as server:
+        server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        server.bind((args.host, args.port))
+        server.listen(1)
+        print(f"Listening on {args.host}:{args.port}, waiting for connections...")
+
+        while True:
+            sock, addr = server.accept()
+            print(f"Client connected from {addr}")
+
+            t0 = time.time()
+            seq = 0
+
+            try:
+                while True:
+                    t = time.time() - t0
+                    line = generate_line(t)
+                    try:
+                        sock.sendall(line.encode())
+                    except (BrokenPipeError, ConnectionResetError):
+                        break
+                    seq += 1
+
+                    if args.duration > 0 and t >= args.duration:
+                        break
+
+                    elapsed = time.time() - t0
+                    target = (seq + 1) * interval
+                    sleep_time = target - elapsed
+                    if sleep_time > 0:
+                        time.sleep(sleep_time)
+            except (BrokenPipeError, ConnectionResetError):
+                pass
+
+            print(f"Client disconnected. Sent {seq} lines. Waiting for new connection...")
+
+
+if __name__ == "__main__":
+    main()

tools/test_plot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""TCP server that sends plot waveform frames or text lines for xserial GUI."""
+"""TCP server that sends plot waveform frames or text lines for pipeview GUI."""
 
 import argparse
 import math
@@ -116,7 +116,7 @@ def is_disconnect_error(err: OSError) -> bool:
 
 
 def main() -> None:
-    parser = argparse.ArgumentParser(description="xserial plot test server")
+    parser = argparse.ArgumentParser(description="pipeview plot test server")
     parser.add_argument("--host", default="127.0.0.1")
     parser.add_argument("--port", type=int, default=8080)
     parser.add_argument("--channels", type=int, default=1)

tools/test_plot_serial.c

@@ -429,7 +429,7 @@ int main(int argc, char **argv) {
     double frame_interval = (double)args.samples_per_channel / args.rate;
     double frame_rate = args.rate / (double)args.samples_per_channel;
 
-    printf("═══ xserial Serial Plot Generator ═══\n");
+    printf("═══ pipeview Serial Plot Generator ═══\n");
     printf("串口:    %s @ %d baud\n", args.port, args.baudrate);
     printf("通道:    %u  格式: %s\n", args.channels, format_name);
     printf("频率:    %.1f Hz  振幅: %.1f\n", args.freq, args.amp);

tools/test_text_serial.c

@@ -208,7 +208,7 @@ int main(int argc, char **argv) {
 
     double interval = 1.0 / args.rate;
 
-    printf("═══ xserial Plain Text Generator ═══\n");
+    printf("═══ pipeview Plain Text Generator ═══\n");
     printf("串口:   %s @ %d baud\n", args.port, args.baudrate);
     printf("通道:   %u  振幅: %.1f  频率: %.1f Hz\n", args.channels, args.amp, args.freq);
     printf("速率:   %.0f lines/sec  (间隔 %.3f ms)\n", args.rate, interval * 1000.0);