Move schema_uri_format to top-level consumer config

It's a framework concern, not an application setting, so it belongs
alongside sentry_dsn, queue, qos_prefetch etc. rather than inside
the config: sub-section.

Config change:

  # Before
  config:
    schema_uri_format: file:///etc/schemas/{0}.avsc

  # After
  schema_uri_format: file:///etc/schemas/{0}.avsc

Added schema_uri_format: str | None to ConsumerConfig. Consumer reads
it via self._process.consumer_config.schema_uri_format.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

Author: gmr

rejected/config.py

@@ -59,6 +59,7 @@ class ConsumerConfig(pydantic.BaseModel):
     qos_prefetch: int = 1
     max_errors: int = 5
     error_exchange: str | None = None
+    schema_uri_format: str | None = None
     sentry_dsn: str | None = None
     drop_exchange: str | None = None
     drop_invalid_messages: bool | None = None

rejected/consumer.py

@@ -1590,7 +1590,11 @@ def _load_avro_schema(self, message_type: str) -> dict:
                  and this method has not been overridden
 
         """
-        uri_format = self.settings.get('schema_uri_format')
+        uri_format = (
+            self._process.consumer_config.schema_uri_format
+            if self._process
+            else None
+        )
         if not uri_format:
             raise NotImplementedError(
                 'Set schema_uri_format in consumer config or override '