From 17c5daa24560607314c7dcd501a5dca4bb8f65e4 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Wed, 16 Sep 2026 03:38:33 -0500
Subject: [PATCH] [ld2412] Drop the unused gate index from GateThresholdNumber
 (#19107)

---
 esphome/components/ld2412/number/__init__.py               | 4 ++--
 esphome/components/ld2412/number/gate_threshold_number.cpp | 2 --
 esphome/components/ld2412/number/gate_threshold_number.h   | 4 ++--
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/esphome/components/ld2412/number/__init__.py b/esphome/components/ld2412/number/__init__.py
index 1a81c330adf..f27e241491d 100644
--- a/esphome/components/ld2412/number/__init__.py
+++ b/esphome/components/ld2412/number/__init__.py
@@ -109,14 +109,14 @@ async def to_code(config: ConfigType) -> None:
     for x in range(14):
         if gate_conf := config.get(f"gate_{x}"):
             move_config = gate_conf[CONF_MOVE_THRESHOLD]
-            n = cg.new_Pvariable(move_config[CONF_ID], x)
+            n = cg.new_Pvariable(move_config[CONF_ID])
             await number.register_number(
                 n, move_config, min_value=0, max_value=100, step=1
             )
             await cg.register_parented(n, config[CONF_LD2412_ID])
             cg.add(LD2412_component.set_gate_move_threshold_number(x, n))
             still_config = gate_conf[CONF_STILL_THRESHOLD]
-            n = cg.new_Pvariable(still_config[CONF_ID], x)
+            n = cg.new_Pvariable(still_config[CONF_ID])
             await number.register_number(
                 n, still_config, min_value=0, max_value=100, step=1
             )
diff --git a/esphome/components/ld2412/number/gate_threshold_number.cpp b/esphome/components/ld2412/number/gate_threshold_number.cpp
index 8d12bad1151..a0a525a8107 100644
--- a/esphome/components/ld2412/number/gate_threshold_number.cpp
+++ b/esphome/components/ld2412/number/gate_threshold_number.cpp
@@ -2,8 +2,6 @@
 
 namespace esphome::ld2412 {
 
-GateThresholdNumber::GateThresholdNumber(uint8_t gate) : gate_(gate) {}
-
 void GateThresholdNumber::control(float value) {
   this->publish_state(value);
   this->parent_->set_gate_threshold();
diff --git a/esphome/components/ld2412/number/gate_threshold_number.h b/esphome/components/ld2412/number/gate_threshold_number.h
index 918b6dfad1a..308da43a34d 100644
--- a/esphome/components/ld2412/number/gate_threshold_number.h
+++ b/esphome/components/ld2412/number/gate_threshold_number.h
@@ -7,10 +7,10 @@ namespace esphome::ld2412 {
 
 class GateThresholdNumber final : public number::Number, public Parented<LD2412Component> {
  public:
-  GateThresholdNumber(uint8_t gate);
+  // Not "= default": that makes new(p) T() zero-fill the object at every codegen site before the ctor runs.
+  GateThresholdNumber() {}
 
  protected:
-  uint8_t gate_;
   void control(float value) override;
 };