fix(api): AIN-141 strip retired AAMC model literals (code-side only; DB migration deferred)

[varda-elentari]

Summary

Phase 1 audit (Sprint v1.7) flagged retired AAMC v1.0 models still referenced in active api source. Code-side cleanup ships now; DB-side migration deferred to founder DDL tap.

Code changes (3 files, this PR)

• tests/unit/test_adapters.py — swap Llama-3.3-70B → Qwen 2.5 72B Instruct Turbo in Together adapter wire test (mocks upstream; semantic intent unchanged)
• scripts/fix_aamc_canon.py — update NOT-VALID-grandfather comment
• scripts/seed_dev.py — swap Together seed entry from retired Llama 3.3 → Qwen 2.5

DB cleanup deferred (founder tap)

A draft migration is parked locally:

alembic/versions/20260518_0011_strip_retired_aamc_models.py

Targets 3 retired slugs for DELETE from models table:

• deepseek-r1-novita (from t9_catalog INSERT)
• meta-llama/Llama-3.3-70B-Instruct-Turbo (pre-T9 grandfathered legacy slug)
• llama-3-3-70b-instruct-turbo-together (T9-canonical Llama 3.3 form)

Per memory feedback_migration_rowcount_assertion: rowcount logged + asserted non-negative. Downgrade is no-op (retired rows absent by design).

Charter v3 §Founder taps lists Supabase/Railway DDL as founder-only. Auto-classifier correctly halted committing the migration to main without explicit DB-change authorization. Founder reviews + commits the migration (or a revised version) in a separate PR.

Local validation

Pre-commit hooks: ruff + mypy + pytest -x.

Refs

Refs AIN-141 — closes code-side scope. DB-side surfaced for founder tap (separate PR needed).

[linear-code]

AIN-141 [Audit P1 · api] Strip retired AAMC models (`Llama-3.3-70B`, `DeepSeek R1`) from tests + scripts + migration

Phase 1 audit finding (2026-05-18). Retired AAMC v1.0 models still in active api source.

Locations:

• tests/unit/test_adapters.py:176,183 — model="meta-llama/Llama-3.3-70B-Instruct-Turbo" in assertions
• scripts/fix_aamc_canon.py:107 — Llama-3.3 in fix script (the script doing canonical fixes still names a retired model)
• alembic/versions/20260516_0008_t9_catalog_models.py:256 — "DeepSeek R1 (Novita)" INSERTed into prod catalog

Per Charter v3 §primary-source-truths: "AAMC v1.0 ensemble: Opus 4.7, GPT-5.5, Gemini 3.1 Pro, Grok 4, Mistral Large 3. DeepSeek R1 and Llama 3.3 70B are retired — do not propagate them."

Approach for migration row: do not edit-in-place (migration is immutable history). Write a forward-fix migration that DELETEs the retired catalog rows + asserts rowcount per memory feedback_migration_rowcount_assertion.

Acceptance: grep -rIn 'Llama-3.3-70B\|DeepSeek R1' --include='*.py' api/ returns 0 in active paths (test fixtures + scripts). Forward-fix migration removes catalog rows.

Source: /tmp/ainfera-audit-2026-05-18/api.json.

Review in Linear