chore: bump version to 1.9.5, update CHANGELOG

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.9.5] - 2026-05-18
+
+### Fixed
+
+- **Temperature disappears permanently** (#9): After 3 consecutive API failures,
+  the weather state machine was permanently locked — `weatherState` stayed `WEATHER_FAILED`
+  and no new requests were ever made even after the API recovered. Fix: reset retry
+  counter and state after max retries so periodic refresh resumes after next interval (30 min).
+
 ## [1.9.4] - 2026-05-14
 
 ### Fixed

firmware/weather_clock/config.h

@@ -9,7 +9,7 @@
 #include <Arduino.h>
 
 // Firmware version
-#define FIRMWARE_VERSION "1.9.4"
+#define FIRMWARE_VERSION "1.9.5"
 
 // OLED I2C Configuration
 #define I2C_SDA 0  // GPIO0 (I2C Data) - SWAPPED!

firmware/weather_clock/weather.cpp

@@ -96,7 +96,10 @@ void ICACHE_FLASH_ATTR onWeatherResponse(void* optParm, AsyncHTTPRequest* reques
 
         weatherRetry.scheduleRetry();
         if (weatherRetry.maxRetriesReached()) {
-          Serial.println("Weather max retries reached");
+          // Reset so periodic refresh can retry after weatherInterval — prevents permanent lockup
+          Serial.println("Weather max retries reached, resetting for next interval");
+          weatherRetry.reset();
+          weatherState = WEATHER_IDLE;
         } else {
           unsigned long backoff = weatherRetry.getBackoffDelay() / 1000;
           Serial.printf("  Retry scheduled in %lu seconds\n", backoff);
@@ -113,7 +116,10 @@ void ICACHE_FLASH_ATTR onWeatherResponse(void* optParm, AsyncHTTPRequest* reques
 
       weatherRetry.scheduleRetry();
       if (weatherRetry.maxRetriesReached()) {
-        Serial.println("Weather max retries reached");
+        // Reset so periodic refresh can retry after weatherInterval — prevents permanent lockup
+        Serial.println("Weather max retries reached, resetting for next interval");
+        weatherRetry.reset();
+        weatherState = WEATHER_IDLE;
       } else {
         unsigned long backoff = weatherRetry.getBackoffDelay() / 1000;
         Serial.printf("  Retry scheduled in %lu seconds\n", backoff);