Vivian Fang c33002259e Add per-item retention policies for injected history (#61344) ...

## What changed

Allow `thread/inject_items` to accept wrapped items with `retention: "default"` or `retention: "always"`, while preserving support for raw response items. Persist explicit policies separately from legacy client-authored metadata.

Carry explicitly retained items through local and remote compaction, context-window changes, and child-agent creation, subject to retention budgets. Preserve history order and keep retained tool exchanges together; require matching calls and outputs to be adjacent in the injection request and both marked `always`.

Update Quinn dependencies and record exceptions for additional Hickory DNSSEC advisories where DNSSEC is disabled.

## Testing

Update injection tests for explicit retention metadata and extend the compaction scenario to cover a retained tool exchange across repeated compaction and restart.

GitOrigin-RevId: 1195a4ed62dc162a62e58bc2ad733262fbabea27

2026-11-13 18:46:13 +00:00

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json

Preserve MCP registration scope across client operations (#61257)

2026-11-13 04:51:06 +00:00

precomputed

Add per-item retention policies for injected history (#61344)

2026-11-13 18:46:13 +00:00

typescript

Preserve MCP registration scope across client operations (#61257)

2026-11-13 04:51:06 +00:00