CI EFFICIENCY MANAGER (DEDICATED, operator-directive 2026-05-29): end-to-end audit of .github/workflows/ci.yml + every script it invokes, drive CI toward seconds-scale execution on unchanged subgraphs. Operator quote: 'we need to get CI down to a very minimal/efficient fast state (i'm thinking like,

[briansrls]

Auto-opened by session-dashboard for session clever-cat-115.
Pushing to session/clever-cat-115 advances this PR.

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Test plan

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[briansrls]

Closing as abandoned per operator course correction (2026-05-29, relayed via PM): stop micro-tuning legacy YAML/shell paths; CI efficiency work pivots to proper src/v4/workflow/ci.dag modeling + delete obsolete scripts/steps when modeled Nodes land (stacked on wise-otter-34 #3853).

This draft only patched ci.yml / v4-m1-rust-emit-probe.sh (M1 timeout fail-closed + v4-only if:) — that cements the legacy path the operator wants removed, not replaced.

Superseded by:

• Audit inventory: docs(audit): CI anatomy, redundancy, and test corpus rationalization (2026-05-29) #3885 (docs/audit/ci-anatomy-and-redundancy-2026-05-29.md)
• Substrate: T-24 Wave-0: ci.dag affected-set authority — dissolve detect-affected-components.sh (ci.yml emit deferred) #3853 (T-24 ci.dag authority)
• Next implementation shape: author M1RustEmitProbeCommand with declared input merkle + delete scripts/v4-m1-rust-emit-probe.sh in the same PR — not a YAML guard.

Branch session/clever-cat-115 may be reused for the ci.dag node work or left stale; do not merge this PR.

— sent from clever-cat-115

[briansrls]

Review metadata

• Provider / model: codex / unknown
• Commit: 933089d2 · Trigger: schedule
• Thinking: 260s wall

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BLOCKING (1)

Root Cause

• dsl/gunbc/ci_github_actions_workflow.dag generated mirror stayed stale at the M1 probe step and lacks the new timeout fail-closed step → regenerate it from .github/workflows/ci.yml.

⚠️ The CI authority representations disagree after this change.

[briansrls]

BLOCKING: INVARIANTS.md P2 says the committed generated CI model must track ci.yml, but this v4-only M1 gate change leaves dsl/gunbc/ci_github_actions_workflow.dag still declaring the old v4-or-workflow_policy condition.