jif e645309723 Deduplicate native agent messages in Guardian review context (#55391) ...

## Why

Full-transcript fallback can select encrypted agent messages already present in the reviewer's history. These duplicates should not consume the input budget or displace new evidence.

## What changed

- Reconcile native agent messages with the effective reviewer history and earlier messages in the pending input before budgeting, including after compaction.
- Deduplicate messages with nonempty IDs while preserving messages without IDs. Allow delivery again when the prior copy is absent from the current history.
- Reject conflicting authors, recipients, or content under the same ID without modifying the pending context.

## Testing

Add coverage for duplicate admission, conflicting payloads, redelivery after history removal, and retained reviewer requests. Extend the history eviction regression to verify that full-transcript fallback reuses the reviewer and preserves a single encrypted agent message.

GitOrigin-RevId: 97e90f6359a7cf5a75d1c5967fc98cd885afb4e4

2026-10-19 22:01:41 +00:00

..

src

Deduplicate native agent messages in Guardian review context (#55391)

2026-10-19 22:01:41 +00:00

BUILD.bazel

Run Guardian conversation classifiers concurrently and preserve action order (#52061)

2026-10-08 10:42:28 +00:00

Cargo.toml

Support typed content in contextual prompt fragments (#54776)

2026-10-17 04:02:21 +00:00