Copilot often adds 100+ GB after a swarm of sessions works on tasks.

Copilot often adds 100+ GB after a swarm of sessions works on tasks. While there is a space/manage sessions popup, a couple of pain points.

1. you can select merged sessions as a target for deletion but it doesn't mean the merged sessions aren't working on anything. I'd like to be able to select merged AND idle, and maybe even a time component ex. merged & idle for > 10 min

2. it only loads one page of items and isn't scrollable, you may have to delete archived sessions multiple times

my current workflow is to go to each coordinator and ask them to examine to delete sessions since they have the most context, that could be an option for the manage memory popup to do it in one line instead of manage manually

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| Field | Value |
| --- | --- |
| App version | 1.1.0 |
| OS | macOS 26.5.2 |
| Theme | Notionish |
| Path | /chat |
| Tenure | Week 4 |

从 /chat 路径开始，复现包含大量已归档、已合并和空闲 session 的 session 管理弹窗。Done 应包括组合状态和基于时间的选择、通过滚动或分页访问所有 session，以及考虑一个单行的 Coordinator 清理操作。

由索引模型根据 Issue 内容生成。