Remove unnecessary comments, clean up code

source/imu.cpp

@@ -4,7 +4,7 @@
 
 LSM6DS3 imu(I2C_MODE, 0x6A);
 
-// ─── I2C helpers ──────────────────────────────────────────────────────────────
+// I2C helpers 
 void imuWriteReg(uint8_t reg, uint8_t val) {
   // LSM6DS3 is on Wire1 (internal I2C, SDA=P0.17, SCL=P0.16), NOT Wire (external pins 4/5)
   Wire1.beginTransmission(0x6A); Wire1.write(reg); Wire1.write(val); Wire1.endTransmission();
@@ -16,13 +16,13 @@ uint8_t imuReadReg(uint8_t reg) {
   return Wire1.available() ? Wire1.read() : 0;
 }
 
-// ─── Temperature ──────────────────────────────────────────────────────────────
+// Temperature 
 float readIMUTemp() {
   int16_t raw = (int16_t)((imuReadReg(REG_OUT_TEMP_H) << 8) | imuReadReg(REG_OUT_TEMP_L));
   return 25.0f + (float)raw / 256.0f;
 }
 
-// ─── Calibration ──────────────────────────────────────────────────────────────
+// Calibration 
 void calibrateGyroBias() {
   Serial.println("[CAL] Hold still...");
   double sx=0, sy=0, sz=0;
@@ -51,7 +51,7 @@ void calibrateGyroBias() {
   Serial.print(","); Serial.println(biasGZ,4);
 }
 
-// ─── Motion curve ─────────────────────────────────────────────────────────────
+// Motion curve 
 float applyCurve(float v) {
   switch (cfg.curve) {
     case CURVE_SQUARE: return (v >= 0 ? 1.f : -1.f) * v * v;