SLM-250: close LOT1-01 not_authorized via activation-gate evaluator (restored)

[Tyler-R-Kendrick]

Summary

Restores the SLM-250 LOT1-01 not_authorized closeout that was dropped when PR #895 was rewritten (the slice previously lived in commit 0205fc66 on that branch; #895 now carries only SLM-300 content). Cherry-picked onto current main with the versions.json conflict resolved (harness.experiments bumped v108 → v109 on top of main's registry).

LOT1-01's own hard activation gates require SLM-248's fidelity-contract verdict to be authorize_bounded_implementation and SLM-249's trace gate verdict to be oracle_ceiling_positive. The real committed upstream artifacts report needs_target_trace_contract and inconclusive respectively (SLM-249's own allowed_lot1_implementation says none is authorized). Per the issue text, this closes not_authorized in plan-only mode without any K×c model/training code.

Adds a small, reusable, tested LotusOpenUIModelContractV1 evaluator that reads the two upstream contracts and derives the verdict from their real published fields (not hardcoded to always fail — a synthetic both-gates-met case is tested to flip the result to authorized_wiring_only). Re-running the same CLI after a real oracle-ceiling campaign honestly reflects the new disposition.

Verification

• pytest tests/test_harnesses/experiments/test_lot1_01_activation_gate.py tests/test_scripts/test_evaluate_lot1_01_activation_gate.py -q — 9 passed
• python -m scripts.evaluate_lot1_01_activation_gate — exit 0, both gates report unmet against the post-SLM-249 (LOT0-02): define CompilerReasoningTraceV1 target-trace contract #909 merged artifacts
• python -m scripts.verify_version_stamps --check — ok
• python -m scripts.repo_policy — ok
• git diff --check — clean

Honest scope

• Plan-only/fixture closeout: no K×c latent model code, no GPU training, no production default change, no semantic/quality claim.
• Successor trigger: if a future trace-gate revision returns oracle_ceiling_positive (or SLM-248 is amended), re-run the evaluator — it reads the contracts live and flips to authorized; LOT1-01 implementation should then be re-filed.

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Project	Deployment	Actions	Updated (UTC)
slm-training	Ready	Preview, Comment	Jul 26, 2026 11:01pm

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 3fed8e18-2676-4757-899c-f0d28eb2d95b

📥 Commits

Reviewing files that changed from the base of the PR and between 7e1fc58 and fbccb67.

📒 Files selected for processing (7)

• docs/design/iter-slm250-lot1-01-not-authorized-20260725.json
• docs/design/iter-slm250-lot1-01-not-authorized-20260725.md
• scripts/evaluate_lot1_01_activation_gate.py
• src/slm_training/harnesses/experiments/lot1_01_activation_gate.py
• src/slm_training/resources/versions.json
• tests/test_harnesses/experiments/test_lot1_01_activation_gate.py
• tests/test_scripts/test_evaluate_lot1_01_activation_gate.py

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch slm-250-lot1-01-not-authorized

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