refactor: Reorder LDAIConfigTracker __init__ params to match spec

New order: ld_client, run_id, config_key, variation_key, version,
model_name, provider_name, context, graph_key. All call sites
converted to keyword arguments for resilience against future reorders.

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

Author: jsonbailey

packages/sdk/server-ai/src/ldai/client.py

@@ -94,13 +94,13 @@ def create_tracker(self, token: str, context: Context) -> LDAIConfigTracker:
 
         return LDAIConfigTracker(
             ld_client=self._client,
-            variation_key=payload.get("variationKey", ""),
+            run_id=payload["runId"],
             config_key=payload["configKey"],
+            variation_key=payload.get("variationKey", ""),
             version=payload["version"],
             model_name="",
             provider_name="",
             context=context,
-            run_id=payload["runId"],
         )
 
     def _completion_config(
@@ -859,14 +859,14 @@ def __evaluate(
 
         def tracker_factory() -> LDAIConfigTracker:
             return LDAIConfigTracker(
-                self._client,
-                variation_key,
-                key,
-                version,
-                model_name,
-                provider_name,
-                context,
+                ld_client=self._client,
                 run_id=str(uuid.uuid4()),
+                config_key=key,
+                variation_key=variation_key,
+                version=version,
+                model_name=model_name,
+                provider_name=provider_name,
+                context=context,
                 graph_key=graph_key,
             )
 

packages/sdk/server-ai/src/ldai/tracker.py

@@ -76,26 +76,26 @@ class LDAIConfigTracker:
     def __init__(
         self,
         ld_client: LDClient,
-        variation_key: str,
+        run_id: str,
         config_key: str,
+        variation_key: str,
         version: int,
         model_name: str,
         provider_name: str,
         context: Context,
-        run_id: str,
         graph_key: Optional[str] = None,
     ):
         """
         Initialize an AI Config tracker.
 
         :param ld_client: LaunchDarkly client instance.
-        :param variation_key: Variation key for tracking.
+        :param run_id: Unique identifier for this execution.
         :param config_key: Configuration key for tracking.
+        :param variation_key: Variation key for tracking.
         :param version: Version of the variation.
         :param model_name: Name of the model used.
         :param provider_name: Name of the provider used.
         :param context: Context for evaluation.
-        :param run_id: Unique identifier for this execution.
         :param graph_key: When set, include ``graphKey`` in all event payloads
             (e.g. config-level metrics inside a graph).
         """

packages/sdk/server-ai/tests/test_judge.py

@@ -54,8 +54,9 @@ def context() -> Context:
 @pytest.fixture
 def tracker(client: LDClient, context: Context) -> LDAIConfigTracker:
     return LDAIConfigTracker(
-        client, 'judge-v1', 'judge-config', 1, 'gpt-4', 'openai', context,
-        run_id='test-run-id',
+        ld_client=client, run_id='test-run-id', config_key='judge-config',
+        variation_key='judge-v1', version=1, model_name='gpt-4',
+        provider_name='openai', context=context,
     )