feat(regime): executor drawdown-leg posture override (PR 4, gated default-off)#193
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…ault-off) PR 4 of the drawdown-regime arc — executor consumer. Mirrors the Stage-F forced-bear posture override. Gated drawdown_regime_enabled (risk.yaml, default false) → zero behavior change on merge. Plan: regime-drawdown-hysteresis-260518.md; ROADMAP config #230. - signal_reader.py: read_drawdown_substrate (regime/drawdown/latest.json, mirror of read_fast_signal) + extract_drawdown_effective_regime (handles the nested compose_effective_regime dict + a bare string; None/malformed → None ⇒ no override). - main.py planner: new "2b'''" block after the forced-bear block. UNGATED read every cycle (parallel-observe), GATED behavior. Override is MOST-PROTECTIVE (rank bull<neutral<caution<bear): drawdown "bear" forces bear, "caution" raises neutral/bull → caution but never lowers an already-bear posture (e.g. one forced_bear just set) — no downgrade. Flag off ⇒ counterfactual logged, no behavior change. Same try/except resilience as the forced-bear block. - risk.yaml.example: drawdown_regime_enabled: false + doc, sibling to regime_forced_bear_enabled (observe→promote gate, plan §5). - tests/test_regime_drawdown_executor.py: +17 — extract shape matrix (nested/bare/None/non-dict/missing/empty/non-string), canonical prefix read, None-artifact composes to None (⇒ no override). 17 targeted + 146 regime/signal_reader + 78 planner/risk_guard tests pass, zero failures; main.py compiles. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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What
PR 4 of the drawdown-regime arc — the executor consumer. Mirrors the Stage-F forced-bear posture override. Gated
drawdown_regime_enabled(risk.yaml, defaultfalse) → zero behavior change on merge. Reads theregime/drawdown/latest.jsonartifact predictor PR #177 already produces (no dependency on the predictor-veto PR #178). Plan:regime-drawdown-hysteresis-260518.md; ROADMAP alpha-engine-config #230 (P1).Changes
executor/signal_reader.py—read_drawdown_substrate(mirror ofread_fast_signal, canonicalregime/drawdownprefix) +extract_drawdown_effective_regime(handles the nestedcompose_effective_regimedict and a bare string;None/malformed →None⇒ no override).executor/main.pyplanner — new2b'''block after the forced-bear block. Ungated read every cycle (parallel-observe), gated behavior. The override is most-protective (rankbull<neutral<caution<bear): drawdownbearforces bear;cautionraises neutral/bull → caution but never lowers an already-bear posture (e.g. one a forced_bear override just set) — strictly no downgrade. Flag off ⇒ counterfactual logged, no behavior change. Same try/except resilience as the forced-bear block.config/risk.yaml.example—drawdown_regime_enabled: false+ doc, sibling toregime_forced_bear_enabled(observe→promote gate, plan §5).tests/test_regime_drawdown_executor.py(+17): extract-shape matrix, canonical-prefix read, None-artifact composes to None ⇒ no override (mirrorstest_regime_fast_signal_executor.py).Tests
17 targeted + 146 (
-k "regime or signal_reader or forced_bear or drawdown") + 78 (-k "main or planner or risk_guard or posture") pass, zero failures;main.py/signal_reader.pybyte-compile clean.Arc status
#176 ✅ · #177 ✅ · #178 ✅ (predictor-veto) · #this (executor posture) · remaining: research brief + macro prompt · dashboard observe panel · config EXPERIMENTS gate + SYSTEM_STATE/ROADMAP.
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