CI Manager Waves 2-4 + four-compile collapse closeout

[briansrls]

Auto-opened by session-dashboard for session lively-bear-102.
Pushing to session/lively-bear-102 advances this PR.

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Summary

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Test plan

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[briansrls]

Closing: Waves 2–4 + four-compile collapse closeout is already covered on main without a parallel planning ledger.

Existing same-path receipts:

• v4_workflow_ci_four_compile_collapse_jobs_consume_v2_compile_src_v4_closure (CI #4091 §1.2 upstream edges)
• v4_workflow_ci_wave1_class_a_shell_exception_table_first_slice (Wave 2 §11.7.5)
• v4_workflow_ci_wave3_* family (CiSelectionReceipt shadow partition, ci_floor_held, no floor_skip:)
• All 43 v4_workflow_ci_* binding smokes green on main.

Dashboard review (Claude) correctly flagged the proposed doc+string-mirror test as a parallel ledger per INVARIANTS ledger-standing principle. No additional closeout artifact needed.