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Gate group speaker isolation to shared chat sessions only.

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Per-user group sessions (user_in_chat) already isolate history; keep Sender tags and focus hints only when session_scope=chat (legacy shared __group__ transcripts).

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
oliver 2026-08-10 23:16:27 +08:00
parent e91e4fe773
commit 9bbac6c0b8
5 changed files with 50 additions and 21 deletions
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16
runtime/orchestration/group_ingest.py
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@ -590,11 +590,12 @@ def prepare_group_user_text_for_model(
account_id=account_id,
)
prefix_parts: list[str] = []
# Always tag the speaker in groups (shared or per-user) so history/quotes cannot 串话.
_ = session_scope # retained for call-site compatibility / future policy forks
prefix_parts.append(
build_group_sender_context(metadata=metadata, external_user_id=external_user_id, lang=lang)
)
# Shared group transcript only: tag speaker so multi-member history cannot 串话.
# Per-user group sessions (user_in_chat) already isolate by session — skip the prefix.
if normalize_group_session_scope(session_scope) == "chat":
prefix_parts.append(
build_group_sender_context(metadata=metadata, external_user_id=external_user_id, lang=lang)
)
quote = str(quoted_ctx or "").strip()
if quote:
prefix_parts.append(quote)
@ -605,14 +606,15 @@ def prepare_group_user_text_for_model(
def build_group_focus_instruction(*, lang: str = "en") -> str:
"""Isolation hint for *shared* group transcripts (session_scope=chat)."""
if str(lang or "").strip().lower().startswith("zh"):
return (
"[群聊规则：只回答当前发言人（见 [发言: …]）的问题；"
"[群聊规则（共享会话）：只回答当前发言人（见 [发言: …]）的问题；"
"除非本条消息明确引用或承接前文，否则不要默认继承其他群成员的上下文；"
"若排队合并了多条跟进，按条分别回应并 @ 对应发言人。]"
)
return (
"[Group chat rule: answer only the current sender (see [Sender: …]). "
"[Shared group-chat rule: answer only the current sender (see [Sender: …]). "
"Do not assume context from other members unless this message explicitly quotes or references it. "
"If several follow-ups were merged while busy, answer each item and @ the matching sender.]"
)