Boyang Niu 69b6152c17 Track context windows per agent (#37347) ...

## Why

Forked subagents can inherit a parent's compacted history, but their context-window metadata needs to identify the child and start a distinct window lineage.

## What changed

- Always identify context windows by agent name and remove the `features.token_budget.mode` setting.
- Persist the agent path in world state and emit context-window metadata as a standalone developer message when the identity changes.
- Reset inherited compaction metadata to the forked subagent's initial context window and restore that window in session state.

## Testing

Extend the full-history subagent test to verify parent and child world-state snapshots, agent identities, distinct window IDs, and the reset child checkpoint.

GitOrigin-RevId: 6584201e57b3d2fba0ce626b89a8b3b0b3c752db

2026-08-07 01:05:33 +00:00

..

common

Allow injecting model catalog caches (#36992)

2026-08-04 23:04:11 +00:00

remote_env_windows

Scope runtime workspace roots to execution environments (#32952)

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

suite

Track context windows per agent (#37347)

2026-08-07 01:05:33 +00:00

all.rs

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

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

responses_headers.rs

Allow custom providers to opt into standalone web search (#34846)

2026-07-23 00:02:15 +00:00