Reduce startup latency for ancestor discovery - #32106
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## Why Serial metadata probes add remote round trips while Codex discovers project instructions, repository skills, and project-root markers during startup. ## What changed - Probe ancestor directories concurrently while preserving discovery order. - Raise the shared find-up probe window to cover typical project hierarchies. - Refresh project instructions in parallel with plugin and skill warmup. ## Testing Add coverage that blocks one metadata request and verifies all expected project-root and `AGENTS.md` ancestor probes have started before it is released. GitOrigin-RevId: 11449837c7a212ec8ed385e7290476e926d93531
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Reduce startup latency for ancestor discovery
Why
Serial metadata probes add remote round trips while Codex discovers project
instructions, repository skills, and project-root markers during startup.
What changed
Testing
Add coverage that blocks one metadata request and verifies all expected project-root
and
AGENTS.mdancestor probes have started before it is released.