rka-oai 768330dd6c Add a fallback phase before automatic context rollover (#33255) ...

## Why

Token-budget sessions need a final opportunity to preserve important state before the current context is compacted.

## What changed

- When `auto_compact_fallback_prompt` is configured, reserve `auto_compact_fallback_buffer_tokens` beyond the base auto-compaction limit.
- At the base limit, inject the fallback prompt once as a developer message while keeping the normal tool surface available. Continue reporting zero base-window tokens during this reserve.
- Roll over when the reserve or full model context is exhausted, and skip the fallback when a new context was already requested.

## Testing

Added coverage for using the fallback reserve, rolling over after it is exhausted, and bypassing the fallback for an explicit `new_context` request.

GitOrigin-RevId: 32983ecadc5cb4927e15ecd7b1e896cb52a9ad3b

2026-07-15 05:45:43 +00:00

..

common

Allow injecting the Codex Apps tools cache (#33113)

2026-07-14 17:10:04 +00:00

remote_env_windows

Scope runtime workspace roots to execution environments (#32952)

2026-07-14 04:41:08 +00:00

suite

Add a fallback phase before automatic context rollover (#33255)

2026-07-15 05:45:43 +00:00

all.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

responses_headers.rs

Always send reasoning parameters in Responses requests (#32206)

2026-07-10 16:11:58 +00:00