style: remove trailing blank lines

docs/compatibility.md

@@ -38,4 +38,3 @@ git diff --stat main...upstream/develop
 Port only independently reviewed changes with regression tests; treat open
 upstream pull requests as proposals, not release inputs. Run the native,
 board-compile, and HA contract gates before publishing a new release.
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tests/ha-contract/README.md

@@ -51,4 +51,3 @@ serializer preflight, migration ordering, component removal, and lifecycle
 behavior. This container suite covers Home Assistant's persistence contract. It
 does not need a physical board: fixture discovery documents mirror retained
 payloads emitted by ArduinoHA and isolate Home Assistant/MQTT compatibility.
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tests/ha-contract/compose.yaml

@@ -41,4 +41,3 @@ services:
 volumes:
   ha_config:
   contract_state:
-

tests/ha-contract/configuration.yaml

@@ -1,3 +1,2 @@
 default_config:
 
-

tests/ha-contract/mosquitto.conf

@@ -3,4 +3,3 @@ persistence_location /mosquitto/data/
 allow_anonymous true
 listener 1883
 log_type all
-

tests/ha-contract/requirements.txt

@@ -1,4 +1,3 @@
 paho-mqtt==2.1.0
 requests==2.32.3
 websocket-client==1.8.0
-