Check upstream changes from just-every/code and openai/codex

[cbusillo]

Objective

Review recent upstream changes from just-every/code and openai/codex and decide what Every Code should import, adapt, ignore, or track separately.

Current Status

State: Waiting
Next action: Fetch/update upstream refs and compare recent changes from both upstreams against current main.
Blocked by: None
Last verified: 2026-05-24 after the Every Code main release path was stabilized.

Scope

• In: Recent commits, workflow changes, prompt/system instruction changes, agent/model routing changes, release/build fixes, bug fixes, and compatibility-relevant behavior from just-every/code and openai/codex.
• Out: Blind bulk merges, large tree rewrites, or adopting upstream behavior that erases intentional Every Code product differences without an explicit decision.

Acceptance Criteria

• Current refs/remotes for just-every/code and openai/codex are fetched or otherwise verified.
• A concise delta summary is produced for each upstream.
• Candidate imports are classified as import now, adapt first, defer, or reject.
• Prompt/system instruction changes are explicitly checked.
• Release/build workflow changes are explicitly checked.
• Any selected imports are split into focused follow-up PRs or issues.

Validation

Use git comparisons against the relevant upstream refs, inspect changed prompt/workflow/build files directly, and run ./build-fast.sh on any implementation PR that imports changes.

Relationships

Related to #51 for ongoing upstream alignment.
Related to #85 for Every Code product independence and import policy.

Notes

Preserve Every Code-specific behavior unless there is a clear compatibility, safety, or maintenance reason to change it.