Simplify AI memory pipeline

api/tests/test_memory_evidence.py

@@ -7,7 +7,6 @@ from app.features.memory.evidence import (
     EMPTY_EVIDENCE_BUNDLE,
     _facts_to_dicts,
     _stories_to_dicts,
-    _timeline_to_dicts,
     retrieve_evidence_bundle_async,
 )
 from app.features.memory.evidence_format import format_evidence_chunks_for_chat_prompt
@@ -19,7 +18,6 @@ def test_empty_evidence_bundle_keys() -> None:
         "relevant_chunks",
         "relevant_summaries",
         "relevant_facts",
-        "timeline_hints",
         "relevant_stories",
     }
 
@@ -31,7 +29,6 @@ def test_evidence_bundle_model_accepts_dict() -> None:
 
 def test_format_helpers_empty() -> None:
     assert _facts_to_dicts([]) == []
-    assert _timeline_to_dicts([]) == []
     assert _stories_to_dicts([]) == []
 
 
@@ -42,7 +39,6 @@ def test_format_evidence_chunks_for_chat_prompt_reframes_and_labels() -> None:
         ],
         "relevant_summaries": [],
         "relevant_facts": [],
-        "timeline_hints": [],
         "relevant_stories": [],
     }
     text = format_evidence_chunks_for_chat_prompt(evidence)
@@ -73,7 +69,6 @@ def test_slice_interview_memory_retrieval_not_equal_inject_dismissive():
         ],
         "relevant_summaries": [],
         "relevant_facts": [],
-        "timeline_hints": [],
         "relevant_stories": [],
     }
     s = slice_interview_memory(evidence, "哈哈，早就不会了")
@@ -92,7 +87,6 @@ def test_slice_interview_memory_minimal_inject_when_aligned():
         ],
         "relevant_summaries": [],
         "relevant_facts": [],
-        "timeline_hints": [],
         "relevant_stories": [],
     }
     s = slice_interview_memory(evidence, "那次排练其实挺紧张的，灯光一打我就忘词。")
@@ -111,7 +105,6 @@ def test_slice_interview_memory_keeps_first_person_but_marks_ownership():
         ],
         "relevant_summaries": [],
         "relevant_facts": [],
-        "timeline_hints": [],
         "relevant_stories": [],
     }
     s = slice_interview_memory(evidence, "那条河一到夏天就特别热闹，我现在都记得。")
@@ -129,7 +122,6 @@ def test_slice_interview_memory_suppresses_long_new_topic():
         ],
         "relevant_summaries": [],
         "relevant_facts": [],
-        "timeline_hints": [],
         "relevant_stories": [],
     }
     long_msg = "我今天想随便聊聊工作里的事，项目压力很大。" * 6
@@ -153,7 +145,6 @@ async def test_retrieve_evidence_bundle_async_non_empty_merges_precomputed_chunk
                 "object_json": {},
             }
         ],
-        "timeline_hints": [],
         "relevant_summaries": [
             {
                 "id": "s1",