Alex Kira 2ca71f1683 Record additional context counts, sizes, and truncation metrics (#58144) ...

## What changed

Add `codex.additional_context` to count submitted entries, including unchanged entries, and `codex.additional_context.value_bytes` to measure UTF-8 value sizes before and after the existing truncation limit. Sizes exclude message wrappers and include the truncation marker after truncation.

Tag metrics with context kind, truncation status, and an explicitly supplied name when present; never use opaque source keys as tags. Record metrics through the current turn's telemetry.

## Testing

Add integration coverage for message and tool-output formats, repeated submissions, truncation boundaries, empty and multibyte values, optional name tags, and turn-specific model attribution.

GitOrigin-RevId: 463f257af27be58c372970fac853b85fde495dd5

2026-10-29 18:24:34 +00:00

..

src

Record additional context counts, sizes, and truncation metrics (#58144)

2026-10-29 18:24:34 +00:00

BUILD.bazel

chore: extract context fragments into dedicated crate (#26122)

2026-06-03 12:25:21 +02:00

Cargo.toml

Support typed content in contextual prompt fragments (#54776)

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