fix: add future annotations import and log judge init failures

- Add `from __future__ import annotations` to evaluator.py so the
  self-referential `-> Evaluator` return type does not need quoting
- Log a warning when a judge fails to initialize in _initialize_judges
  instead of silently swallowing the exception

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

Author: jsonbailey

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

@@ -339,7 +339,8 @@ def _initialize_judges(
                 )
                 if judge:
                     judges[judge_config.key] = judge
-            except Exception:
+            except Exception as e:
+                log.warning(f'Failed to initialize judge {judge_config.key!r}: {e}')
                 continue
 
         return judges

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

@@ -1,5 +1,7 @@
 """Evaluator implementation for coordinating multiple judges."""
 
+from __future__ import annotations
+
 import asyncio
 from typing import Dict, List
 
@@ -29,7 +31,7 @@ def __init__(self, judges: Dict[str, Judge], judge_configuration: JudgeConfigura
         self._judge_configuration = judge_configuration
 
     @classmethod
-    def noop(cls) -> 'Evaluator':
+    def noop(cls) -> Evaluator:
         return cls({}, JudgeConfiguration(judges=[]))
 
     def evaluate(