Refactor DALI command handling: streamline send methods and enhance scene color reporting

Co-authored-by: Copilot <copilot@github.com>

include/dali_comm.hpp

@@ -9,7 +9,7 @@
 // Lightweight communicator for DALI gateway type 1 (USB UART new frame format).
 // Frames:
 //  - Send:   [0x10, addr, cmd]
-//  - Ext:    [0x11, addr, cmd] (sent twice with a small delay)
+//  - Ext:    [0x11, addr, cmd] (one logical send; gateway/transceiver handles any required repeat timing)
 //  - Query:  [0x12, addr, cmd] -> expects [0xFF, data] on success
 //              COMPARE may also return [0xFD, data] when multiple devices reply together
 // Callers provide UART callbacks; this class only builds frames and parses basic responses.
@@ -49,7 +49,7 @@ class DaliComm {
 
   // Send standard command frame (0x10).
   bool sendCmd(uint8_t addr, uint8_t cmd) const;
-  // Send extended command frame (0x11).
+  // Send one logical extended command frame (0x11).
   bool sendExtCmd(uint8_t addr, uint8_t cmd) const;
   // Send query frame (0x12) and parse single-byte response. Returns nullopt on no/invalid response,
   // except COMPARE where 0xFD collisions are treated as a positive match.

include/dt5.hpp

@@ -73,6 +73,6 @@ class DaliDT5 {
 
   bool enable();
   static int addrOf(int a);
-  bool send(int a, int code, bool twice = false);
+  bool send(int a, int code);
   std::optional<int> query(int a, int code);
 };

include/dt6.hpp

@@ -124,7 +124,7 @@ class DaliDT6 {
 
   bool enable();
   static int addrOf(int a);
-  bool send(int a, int code, bool twice = false);
+  bool send(int a, int code);
   std::optional<int> query(int a, int code);
   std::optional<bool> queryYesNo(int a, int code);
 };

include/dt8.hpp

@@ -25,6 +25,20 @@ class ColorStatus {
   int status_ = 0;
 };
 
+class ColorType {
+ public:
+  explicit ColorType(int type) : type_(type) {}
+
+  int raw() const { return type_; }
+  bool xy() const { return (type_ & 0x10) != 0; }
+  bool ct() const { return (type_ & 0x20) != 0; }
+  bool primaryN() const { return (type_ & 0x40) != 0; }
+  bool rgbWaf() const { return (type_ & 0x80) != 0; }
+
+ private:
+  int type_ = 0;
+};
+
 class ColorTypeFeature {
  public:
   explicit ColorTypeFeature(int features) : features_(features) {}
@@ -41,6 +55,17 @@ class ColorTypeFeature {
   int features_ = 0;
 };
 
+struct SceneColorReport {
+  int brightness = 0;
+  int colorTypeValue = 0;
+  std::vector<double> xy;
+  std::optional<int> colorTemperature;
+
+  ColorType colorType() const { return ColorType(colorTypeValue); }
+  bool hasXy() const { return xy.size() == 2; }
+  bool hasColorTemperature() const { return colorTemperature.has_value(); }
+};
+
 class DaliDT8 {
  public:
   explicit DaliDT8(DaliBase& base);
@@ -135,6 +160,7 @@ class DaliDT8 {
   std::optional<int> getPrimaryYRaw(int a, int n);
   std::optional<int> getPrimaryTy(int a, int n);
 
+  std::optional<SceneColorReport> getSceneColorReport(int a, int sense);
   std::vector<double> getSceneColor(int a, int sense);
 
   // Store / config