Define what unread means, preserve edits and permissions, and make every action item traceable. The design must tell users when the summary covers only part of their inbox.
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Fictional workplace catch-up feature. The first version helps a returning employee find decisions and actions, without replying or marking messages read. The fresh permitted snapshot fits the selected context budget.
| Unread messages | 240 |
|---|---|
| Threads in the earlier snapshot | 18 |
| Edited threads since the cached summary | 4 |
| Additional thread now inaccessible | 1 |
| Source contract | Provides message and thread IDs, versions, timestamps and current access checks; pagination or requests may fail. |
Your task. Design the request path, cache invalidation, incomplete-coverage experience and evaluation. Account for edits, revocation, ambiguous action items and source failure.
Define what unread means, preserve edits and permissions, and make every action item traceable. The design must tell users when the summary covers only part of their inbox.
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