feat(history): 实现超长对话历史按日归档与滑动窗口 (Phase P0)

2026-09-10 13:24:32 +08:00
parent cf966dcf77
commit 2ece0ce882
22 changed files with 3554 additions and 29 deletions
@@ -109,10 +109,15 @@ CREATE TABLE IF NOT EXISTS chat_messages (
    intent          TEXT NOT NULL DEFAULT '',
    branch          TEXT NOT NULL DEFAULT '',
    metadata        JSONB NOT NULL DEFAULT '{}'::jsonb,
+    day_key         DATE,
+    category        TEXT NOT NULL DEFAULT 'uncategorized',
+    deleted_at      TIMESTAMPTZ,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT now()
 );

 CREATE INDEX IF NOT EXISTS idx_chat_messages_sid_time ON chat_messages(session_id, created_at ASC);
+CREATE INDEX IF NOT EXISTS idx_chat_messages_sid_day_id ON chat_messages(session_id, day_key DESC, id DESC);
+CREATE INDEX IF NOT EXISTS idx_chat_messages_sid_category ON chat_messages(session_id, category, id DESC);

 -- -----------------------------------------------------------------------------
 -- 5. CAS 物理文件寻址与引用去重表 (Storage Blobs & File References)