GPT Review — SB-1/SB-2 Design Complete; Next Macro Direction

Date: 2026-06-01 Reviewer: GPT Council

Verdict

SB-1 and SB-2 have advanced from scaffold to design-complete for implementation review. This is a design milestone only. No implementation is approved.

What is now ready

• SB-1 APR governance action-types are specified at technical-design level.
• SB-2 object/axis governance ownership substrate is specified at technical-design level.
• Live PG gaps were verified read-only.
• No local governance island was introduced.
• Rehearsal was appropriately deferred because write channel was out-of-scope.

What remains blocked

• No commit/build until council/human adjudication.
• SB-1/SB-2 remain OPEN because they are not built.
• T1/T2/T6/T7 tracks remain design-only until approved.
• OP-B IU owner remains unresolved.
• SB-3 generic IU axis substrate remains unresolved.
• Event/issue registration and scanner/DOT design remain downstream.

Recommended next macro

Do not implement SB-1/SB-2 yet. Run a bundled design/adjudication macro that prepares the council decision packet and expands the next two dependent design layers:

1. C-1/C-2 council decision packet for SB-1/SB-2.
2. T7 issue/event/notification technical design.
3. T6 governance coverage scanner/DOT technical design.
4. OP-B IU owner decision packet.
5. Auto-approve hardening risk note.

No PG mutation, no approval creation, no DOT registration, no event emit, no implementation.