From e428cb5092afcd78e8565bb992fc75da20b7f11c Mon Sep 17 00:00:00 2001
From: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com>
Date: Mon, 6 Apr 2026 21:33:22 -0400
Subject: [PATCH] [multiple] Fix misc cosmetic bugs (batch 2) (#15502)

---
 esphome/components/atm90e32/sensor.py     | 1 -
 esphome/components/esp8266/gpio.py        | 2 +-
 esphome/components/espnow/__init__.py     | 6 +++---
 esphome/components/kamstrup_kmp/sensor.py | 3 ++-
 esphome/components/stepper/__init__.py    | 2 +-
 esphome/zeroconf.py                       | 2 +-
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/esphome/components/atm90e32/sensor.py b/esphome/components/atm90e32/sensor.py
index 0944950432..7e5d85c57a 100644
--- a/esphome/components/atm90e32/sensor.py
+++ b/esphome/components/atm90e32/sensor.py
@@ -132,7 +132,6 @@ ATM90E32_PHASE_SCHEMA = cv.Schema(
         cv.Optional(CONF_PHASE_ANGLE): sensor.sensor_schema(
             unit_of_measurement=UNIT_DEGREES,
             accuracy_decimals=2,
-            device_class=DEVICE_CLASS_POWER,
             state_class=STATE_CLASS_MEASUREMENT,
         ),
         cv.Optional(CONF_HARMONIC_POWER): sensor.sensor_schema(
diff --git a/esphome/components/esp8266/gpio.py b/esphome/components/esp8266/gpio.py
index 43508afaf9..64be4a6495 100644
--- a/esphome/components/esp8266/gpio.py
+++ b/esphome/components/esp8266/gpio.py
@@ -155,7 +155,7 @@ ESP8266_PIN_SCHEMA = cv.All(
 
 @dataclass
 class PinInitialState:
-    mode = 255
+    mode: int = 255
     level: int = 255
 
 
diff --git a/esphome/components/espnow/__init__.py b/esphome/components/espnow/__init__.py
index 49b96eeb6f..a9624734d0 100644
--- a/esphome/components/espnow/__init__.py
+++ b/esphome/components/espnow/__init__.py
@@ -158,15 +158,15 @@ def validate_peer(value):
 
 def _validate_raw_data(value):
     if isinstance(value, str):
-        if len(value) >= MAX_ESPNOW_PACKET_SIZE:
+        if len(value) > MAX_ESPNOW_PACKET_SIZE:
             raise cv.Invalid(
-                f"'{CONF_DATA}' must be less than {MAX_ESPNOW_PACKET_SIZE} characters long, got {len(value)}"
+                f"'{CONF_DATA}' must be at most {MAX_ESPNOW_PACKET_SIZE} characters long, got {len(value)}"
             )
         return value
     if isinstance(value, list):
         if len(value) > MAX_ESPNOW_PACKET_SIZE:
             raise cv.Invalid(
-                f"'{CONF_DATA}' must be less than {MAX_ESPNOW_PACKET_SIZE} bytes long, got {len(value)}"
+                f"'{CONF_DATA}' must be at most {MAX_ESPNOW_PACKET_SIZE} bytes long, got {len(value)}"
             )
         return cv.Schema([cv.hex_uint8_t])(value)
     raise cv.Invalid(
diff --git a/esphome/components/kamstrup_kmp/sensor.py b/esphome/components/kamstrup_kmp/sensor.py
index fb37ac2c8d..134ac245bf 100644
--- a/esphome/components/kamstrup_kmp/sensor.py
+++ b/esphome/components/kamstrup_kmp/sensor.py
@@ -13,6 +13,7 @@ from esphome.const import (
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_VOLUME,
+    DEVICE_CLASS_VOLUME_FLOW_RATE,
     STATE_CLASS_MEASUREMENT,
     STATE_CLASS_TOTAL_INCREASING,
     UNIT_CELSIUS,
@@ -75,7 +76,7 @@ CONFIG_SCHEMA = (
             ),
             cv.Optional(CONF_FLOW): sensor.sensor_schema(
                 accuracy_decimals=1,
-                device_class=DEVICE_CLASS_VOLUME,
+                device_class=DEVICE_CLASS_VOLUME_FLOW_RATE,
                 state_class=STATE_CLASS_MEASUREMENT,
                 unit_of_measurement=UNIT_LITRE_PER_HOUR,
             ),
diff --git a/esphome/components/stepper/__init__.py b/esphome/components/stepper/__init__.py
index 27d4fc276d..8acacc3b49 100644
--- a/esphome/components/stepper/__init__.py
+++ b/esphome/components/stepper/__init__.py
@@ -46,7 +46,7 @@ def validate_acceleration(value):
 
 def validate_speed(value):
     value = cv.string(value)
-    for suffix in ("steps/s", "steps/s"):
+    for suffix in ("steps/s",):
         value = value.removesuffix(suffix)
 
     if value == "inf":
diff --git a/esphome/zeroconf.py b/esphome/zeroconf.py
index dc4ca77eb4..dd45b58a6c 100644
--- a/esphome/zeroconf.py
+++ b/esphome/zeroconf.py
@@ -25,7 +25,7 @@ _BACKGROUND_TASKS: set[asyncio.Task] = set()
 
 
 class DashboardStatus:
-    def __init__(self, on_update: Callable[[dict[str, bool | None], []]]) -> None:
+    def __init__(self, on_update: Callable[[dict[str, bool | None]], None]) -> None:
         """Initialize the dashboard status."""
         self.on_update = on_update