feat: Add configurable API timeout setting

- Add CONF_API_TIMEOUT configuration option (5-600 seconds, default 30)
- Update config_flow.py with api_timeout field in provider form and options flow
- Update api_client.py to use configurable timeout instead of hardcoded value
- Update coordinator.py to use api_timeout for async_process_message
- Update __init__.py to read and pass api_timeout from config
- Merge entry.data with entry.options for proper options flow support
- Add translations for api_timeout in all 8 language files (en, ru, de, es, it, hi, sr, zh)
- Bump version to 2.2.0

Closes #8

custom_components/ha_text_ai/const.py

@@ -61,6 +61,7 @@ CONF_TEMPERATURE: Final = "temperature"
 CONF_MAX_TOKENS: Final = "max_tokens"
 CONF_API_ENDPOINT: Final = "api_endpoint"
 CONF_REQUEST_INTERVAL: Final = "request_interval"
+CONF_API_TIMEOUT: Final = "api_timeout"
 CONF_INSTANCE: Final = "instance"
 CONF_MAX_HISTORY_SIZE: Final = "max_history_size"  # Correct constant name
 CONF_IS_ANTHROPIC: Final = "is_anthropic"
@@ -79,6 +80,7 @@ DEFAULT_TEMPERATURE: Final = 0.1
 DEFAULT_MAX_TOKENS: Final = 1000
 DEFAULT_REQUEST_INTERVAL: Final = 1.0
 DEFAULT_TIMEOUT: Final = 30
+DEFAULT_API_TIMEOUT: Final = 30
 DEFAULT_MAX_HISTORY: Final = 50
 DEFAULT_NAME: Final = "HA Text AI"
 DEFAULT_NAME_PREFIX = "ha_text_ai"
@@ -93,9 +95,11 @@ MIN_MAX_TOKENS: Final = 1
 MAX_MAX_TOKENS: Final = 100000
 MIN_REQUEST_INTERVAL: Final = 0.1
 MAX_REQUEST_INTERVAL: Final = 60.0
+MIN_API_TIMEOUT: Final = 5
+MAX_API_TIMEOUT: Final = 600
 
 # API constants
-API_TIMEOUT: Final = 30
+API_TIMEOUT: Final = 30  # Legacy constant, use CONF_API_TIMEOUT from config
 API_RETRY_COUNT: Final = 3
 
 # Service names
@@ -232,6 +236,10 @@ CONFIG_SCHEMA = vol.Schema({
             vol.Coerce(float),
             vol.Range(min=MIN_REQUEST_INTERVAL, max=MAX_REQUEST_INTERVAL)
         ),
+        vol.Optional(CONF_API_TIMEOUT, default=DEFAULT_API_TIMEOUT): vol.All(
+            vol.Coerce(int),
+            vol.Range(min=MIN_API_TIMEOUT, max=MAX_API_TIMEOUT)
+        ),
         vol.Optional(CONF_MAX_HISTORY_SIZE, default=DEFAULT_MAX_HISTORY): vol.All(  # Correct usage
             vol.Coerce(int),
             vol.Range(min=1, max=100),