[valve] Pack the valve traits flags into one byte

esphome/components/valve/valve_traits.h

@@ -1,25 +1,31 @@
 #pragma once
 
+#include <cstdint>
+
 namespace esphome::valve {
 
 class ValveTraits {
  public:
   ValveTraits() = default;
 
-  bool get_is_assumed_state() const { return this->is_assumed_state_; }
-  void set_is_assumed_state(bool is_assumed_state) { this->is_assumed_state_ = is_assumed_state; }
-  bool get_supports_position() const { return this->supports_position_; }
-  void set_supports_position(bool supports_position) { this->supports_position_ = supports_position; }
-  bool get_supports_toggle() const { return this->supports_toggle_; }
-  void set_supports_toggle(bool supports_toggle) { this->supports_toggle_ = supports_toggle; }
-  bool get_supports_stop() const { return this->supports_stop_; }
-  void set_supports_stop(bool supports_stop) { this->supports_stop_ = supports_stop; }
+  bool get_is_assumed_state() const { return this->flags_.is_assumed_state; }
+  void set_is_assumed_state(bool is_assumed_state) { this->flags_.is_assumed_state = is_assumed_state; }
+  bool get_supports_position() const { return this->flags_.supports_position; }
+  void set_supports_position(bool supports_position) { this->flags_.supports_position = supports_position; }
+  bool get_supports_toggle() const { return this->flags_.supports_toggle; }
+  void set_supports_toggle(bool supports_toggle) { this->flags_.supports_toggle = supports_toggle; }
+  bool get_supports_stop() const { return this->flags_.supports_stop; }
+  void set_supports_stop(bool supports_stop) { this->flags_.supports_stop = supports_stop; }
 
  protected:
-  bool is_assumed_state_{false};
-  bool supports_position_{false};
-  bool supports_toggle_{false};
-  bool supports_stop_{false};
+  // Bit-packed flags to save memory (1 byte instead of 4)
+  struct ValveTraitFlags {
+    uint8_t is_assumed_state : 1;
+    uint8_t supports_position : 1;
+    uint8_t supports_toggle : 1;
+    uint8_t supports_stop : 1;
+    uint8_t reserved : 4;
+  } flags_{};
 };
 
 }  // namespace esphome::valve