feat: make TimeStamper configurable in LoggingConfig

docs/introduction/configuration.md

@@ -113,7 +113,18 @@ Additional parameters:
 - `logging_flush_level`
 - `logging_buffer_capacity`
 - `logging_extra_processors`
-- `logging_unset_handlers`.
+- `logging_unset_handlers`
+- `logging_time_stamper` - a `structlog.processors.TimeStamper` instance controlling timestamp format (default: `TimeStamper(fmt="iso")`). Pass a custom instance to change the format or enable UTC:
+
+```python
+import structlog
+from lite_bootstrap import FastAPIConfig
+
+config = FastAPIConfig(
+    service_debug=False,
+    logging_time_stamper=structlog.processors.TimeStamper(fmt="%Y-%m-%d %H:%M:%S", utc=True),
+)
+```
 
 ### Structlog Litestar
 

lite_bootstrap/instruments/logging_instrument.py

@@ -95,6 +95,7 @@ class LoggingConfig(BaseConfig):
     logging_unset_handlers: list[str] = dataclasses.field(
         default_factory=list,
     )
+    logging_time_stamper: "structlog.processors.TimeStamper | None" = None
 
 
 @dataclasses.dataclass(kw_only=True, slots=True, frozen=True)
@@ -110,7 +111,7 @@ def structlog_pre_chain_processors(self) -> list[typing.Any]:
             structlog.stdlib.add_logger_name,
             tracer_injection,
             structlog.stdlib.PositionalArgumentsFormatter(),
-            structlog.processors.TimeStamper(fmt="%Y-%m-%d %H:%M:%S"),
+            self.bootstrap_config.logging_time_stamper or structlog.processors.TimeStamper(fmt="iso"),
             structlog.processors.StackInfoRenderer(),
             structlog.processors.format_exc_info,
             structlog.processors.UnicodeDecoder(),