chore(compact_20260112): non-greedy summary regex; use COMPACT_EDIT_TYPE in bedrock filter

- Make _SUMMARY_TAG_RE non-greedy so a response with multiple <summary>
  blocks captures only the first complete block.
- Replace the hardcoded 'compact_20260112' literal in
  _filter_context_management_for_bedrock_converse with the shared
  COMPACT_EDIT_TYPE constant.

litellm/llms/anthropic/experimental_pass_through/context_management/editors/compact.py

@@ -52,7 +52,7 @@ _PROPAGATED_METADATA_KEYS = (
     "litellm_parent_otel_span",
 )
 
-_SUMMARY_TAG_RE = re.compile(r"<summary>(.*)</summary>", re.IGNORECASE | re.DOTALL)
+_SUMMARY_TAG_RE = re.compile(r"<summary>(.*?)</summary>", re.IGNORECASE | re.DOTALL)
 
 
 def _read_summary_model_setting() -> Optional[str]:

litellm/llms/bedrock/chat/converse_transformation.py

@@ -1477,6 +1477,9 @@ class AmazonConverseConfig(BaseConfig):
         anthropic_beta_list: list,
     ) -> None:
         """Keep only compact_20260112 edits for Bedrock; add beta header or drop field."""
+        from litellm.llms.anthropic.experimental_pass_through.context_management.constants import (
+            COMPACT_EDIT_TYPE,
+        )
         from litellm.types.llms.anthropic import ANTHROPIC_BETA_HEADER_VALUES
 
         cm = additional_request_params.get("context_management")
@@ -1491,7 +1494,7 @@ class AmazonConverseConfig(BaseConfig):
         compact_edits = [
             e
             for e in edits
-            if isinstance(e, dict) and e.get("type") == "compact_20260112"
+            if isinstance(e, dict) and e.get("type") == COMPACT_EDIT_TYPE
         ]
         if compact_edits:
             compact_beta = ANTHROPIC_BETA_HEADER_VALUES.COMPACT_2026_01_12.value