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feat(im): 入站音视频交给模型，个人 IM 附件统一受管存放 - #5779
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- video / video_note / voice / audio 与 video/*、audio/* 文档不再标 unsupported， 20MB 以内按文件下载（file block 路径），超出标 oversize - TelegramIM 内存记下群媒体 file_id（200 条 / 24h，受保护群不入池， 已随本轮送达的出池），群上下文实际纳入的消息附件经 contextAttachments 只进模型、不落库；名额与飞书同口径，先占名额再下载，全响应轮次不补 - groupWindowCore 组装结果附带 messageIds；能力台账登记 2j Signed-off-by: Dash <125997726+dashhuang@users.noreply.github.com>
- 音视频经 host.media.cacheMedia 入 cindy-media（可回收暂存，消息落库时转为附件引用） - host 未提供 cacheMedia 或总仓拒收格式时标 video/audio 不支持，不降级写 legacy 目录 - 下载期间配置换代时回滚本次暂存的媒体 Signed-off-by: Dash <125997726+dashhuang@users.noreply.github.com>
- 新增 IMHost.files：非媒体文件按账号暂存到 im-attachments/<渠道>/staging， turnRunner 在任务确定后移入 im-attachments/<渠道>/sessions/<任务ID>， 任务删除时统一清理（含微信），无人认领的暂存文件 24h 后清理 - 飞书、Discord、Telegram、企业微信：图片与音视频走 host.media，其余文件走 host.files；能力缺失或总仓拒收格式时标不支持，不再回落写 cc-agent/*-media - 飞书视频消息、Discord 音视频改为下载后交给模型（进媒体总仓） - 移除飞书 mediaStore.getOrDownload 旧目录缓存；更新媒体规则与能力台账 Signed-off-by: Dash <125997726+dashhuang@users.noreply.github.com>
Signed-off-by: Dash <125997726+dashhuang@users.noreply.github.com>
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收敛检查点（第 5 轮）：入站附件不变量第 1–5 轮的 review 反馈归为三族。下面每族一条不变量，本 PR 的实现与测试以此为准；之后同族的反馈对照这里判断。 I1 分类：单一判据
图片和音视频收不收，由总仓的白名单和真实字节决定；拒收或 host 缺对应能力时标不支持，不回落文件暂存，也不写 I2 回滚：落库前的写入都可撤销
I3 归属：任务目录只放落库消息引用的文件
本 PR 不处理（已接受的边界）
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收敛检查点补充（第 6 轮）第 6 轮的 4 条反馈都已对照前面的不变量收口（提交 c2afc7e）：
新增划定的边界（本 PR 不处理）：飞书下载完成后， |
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边界补充（第 12 轮）以下两条为本 PR 明确不处理的罕见交错，修复它们都需要新增机制（排队期间的临时引用、暂存续租或队列登记）。如有需要另开 issue：
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边界补充（第 13 轮）：如果删除请求在等待 DB 写入或共享任务清理期间恰好切换了账号，发起删除的账号的 IM 附件目录可能残留。这只会多占该账号自己的磁盘，不会误删数据，也不会跨账号暴露数据。本 PR 不为此把原始账号的作用域透传到所有删除入口。 |
MagicLizi
added
touches:core
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边界补充（维护者决定，2026-10-12）：群历史附件与群聊文本、引用附件采用同一信任模型。群友的媒体或文件可能被带进主人触发的轮次。非 Full access 时，群轮次照旧走逐轮强确认；Full access 是主人对该任务的明确授权，本 PR 不另做隔离。 |
3 participants
这次改了什么
摘要
Telegram 群里发的视频没有交给 bot：入站代码把视频、语音、音频一律标成“不支持”；群里“先发视频、再单独 @bot”时，群记录只存文件名，触发时也拿不到附件。
本 PR 修复这个问题，并把所有个人 IM 渠道的入站附件统一改为受管存放，不再写冻结的
cc-agent/*-media目录（docs/dev-rules/media-storage-and-protocols.md：该目录是只读的历史兼容层）：video/*、audio/*文档，20MB 以内（Bot API 上限）下载后经host.media.cacheMedia进 cindy-media，以 file block（可读路径）交给模型；超限或格式不收时作为未提供原因告知模型。TelegramIM在内存里记下群媒体的 file_id（200 条 / 24 小时，重启清空；受保护群不记；不随轮次出池，已受理轮次由群窗口游标防重复，同一轮已随附件送达的相册成员与被引消息排除）。触发时只补这一轮群上下文实际纳入那些消息的附件（groupWindowCore组装结果新增messageIds），名额与飞书群上下文一致（图片 6、文件 4，最新优先，先占名额再下载），经contextAttachments只进模型、不落库；全响应（ambient）轮次不补。IMHost.files。transport 把 PDF / docx / zip 等暂存到按账号隔离的im-attachments/<渠道>/staging/，turnRunner在任务确定后、交给模型和落库之前，移入im-attachments/<渠道>/sessions/<任务ID>/（与微信既有目录同一棵树）。任务删除时统一清理所有渠道的附件目录（含微信，并补上updateSessionInDb/setSessionsStatusInDb路径漏清的情况）；无人认领的暂存文件 24 小时后清理。实现见apps/desktop/src/main/im/shared/inboundFileStaging.ts。host.media，其余文件走host.files；能力缺失或总仓拒收格式时标为不支持，不再回落写旧目录。飞书视频消息、Discord 音视频顺带改为下载后交给模型。移除飞书mediaStore.getOrDownload旧目录缓存。变更类型
feat新功能fix缺陷修复refactor/perf重构或性能优化docs/test/chore文档、测试或工程维护范围
cc-agent，所有个人 IM 渠道一并更新。cc-agent下历史文件的清理（规则禁止新增该目录删除能力）。cc-agent的路径保持可读；IMHost.paths.*MediaDir保留为只读兼容字段。UI 变化
不涉及。
怎么验证的
自动验证
第 1 轮 review 收敛（f16babf8e，已 rebase 到 main 7c4ba33）后复跑：
CI「Linux unit tests (2/2)」唯一失败
src/renderer/__tests__/remoteAgentRelocationWiring.test.ts（ModelSelector 改道行带所属电脑）是 main 基线问题：本 PR 未改 renderer，rebase 到 main 7c4ba33 后在本地同样失败，来自 main 近期 provider-group 提交，本 PR 不修。手工验证
未在真实 IM 中实测（见下）。
未执行的验证
cc-agent/*-media不再新增文件。风险
风险分类
影响与回滚
提交前检查
git commit -s，见 DCO）