sots-re/campaign/rollout/architecture-decision.md

Architecture rollout — 2026-09-09

Authority: user approved implementation; architecture and plan-changing surprises are owned by openai/gpt-6-astra (the active lead). The user's correction supersedes SOL/MYTHOS routing.

Decisions

• sots-re is the only campaign state authority. Contracts, checkpoints, decisions, evidence, leases and accepted results live here. Chat memory and engine docs are not campaign state.
• Primary lead and resolver: GPT-6 Astra. Analysts, implementers and independent verifiers: GPT-5.6 Terra. Lab operator: GPT-5.5. Compaction: GPT-5.5. No silent model fallback.
• One pilot, then at most two independent implementation slices. No worker subdelegation.
• Workers checkpoint every 20 tool calls or 15 minutes, whichever comes first, and before compaction, handoff, experiments or stopping. Bounded sessions resume from repository state.
• New slices use paired worktrees. This bootstrap alone uses exclusive FILE ownership in the clean canonical trees: the lead owns architecture/state/config/dashboard; gate-worker owns gate/evidence/reporter tooling; engine-worker owns accounting and engine tests. No shared-file writes, staging, commits, pushes, remote deployment or Ghidra mutations are authorized.
• Replace obsolete live workflow documents and agents; history is in Git. Retain scientific evidence and domain findings. Historical observations do not become current acceptance.
• Local gate builds a fresh source snapshot, hashes actual source and inputs, runs CTest once, enforces expected identities and required execution, and records limitations. Full acceptance additionally requires assets, shim build and slice-specific oracle criteria. No remote shared staging overlay; operators run the same gate on a leased lab host with explicit paths.
• Reporter requires explicit binary and provenance, errors on missing/failed pairs or coverage, separates byte/inflated/state equality, and supports measurement versus acceptance explicitly.

Bootstrap task ownership

Worker	Model	Files	State
lead	openai/gpt-6-astra	architecture, AGENTS, configuration, campaign tool/state, dashboard	implementing
gate-worker	openai/gpt-5.6-terra	tools/{gate.sh,gate.py,evidence.py,standalone_report.py}, verify/tooling/	assigned
engine-worker	openai/gpt-5.6-terra	src/app accounting, RNG support as necessary, tests/, CMake test properties	assigned

Surprises must be recorded in the worker checkpoint with evidence and the proposed discriminating check, then escalated to the lead before changing architecture or scope. Ordinary implementation errors within a contract may be fixed without escalation.