Sessions 5-7a: 955 tests, deployment ready

supabase/migrations/018_engine2_learning.sql

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+-- ---------------------------------------------------------------
+-- 018 — Engine 2 + learning loop tables (Session 6c).
+--
+--   grade_history retrofit  : Engine 2 analysis columns
+--   engine1_weights         : versioned factor weights for Engine 1
+--   accuracy_tracking       : per-grade-tier hit rates with baseline lock
+--
+-- All three are service-role-only. The Ledger surface reads grade_history
+-- directly (it already had RLS configured in earlier migrations); the new
+-- engine2_* columns inherit that policy.
+-- ---------------------------------------------------------------
+
+ALTER TABLE public.grade_history
+  ADD COLUMN IF NOT EXISTS engine2_grade            text,
+  ADD COLUMN IF NOT EXISTS engine2_confidence       numeric,
+  ADD COLUMN IF NOT EXISTS engine2_narrative        text,
+  ADD COLUMN IF NOT EXISTS engine2_agrees           boolean,
+  ADD COLUMN IF NOT EXISTS engine2_key_factor       text,
+  ADD COLUMN IF NOT EXISTS engine2_trap_concern     text,
+  ADD COLUMN IF NOT EXISTS engine2_model            text,
+  ADD COLUMN IF NOT EXISTS engine2_latency_ms       integer,
+  ADD COLUMN IF NOT EXISTS engine2_analyzed_at      timestamptz;
+
+CREATE INDEX IF NOT EXISTS idx_grade_history_engine2_pending
+  ON public.grade_history (id) WHERE engine2_analyzed_at IS NULL;
+
+-- Session 7a additions: store Engine 1 factors (for the learning loop's
+-- weight adjuster) and the quantile-based P(Over) (for the UI + Engine 2).
+ALTER TABLE public.grade_history
+  ADD COLUMN IF NOT EXISTS factors  jsonb,
+  ADD COLUMN IF NOT EXISTS p_over   numeric;
+
+-- ---------------------------------------------------------------
+
+CREATE TABLE IF NOT EXISTS public.engine1_weights (
+  id                  uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  sport               text NOT NULL,
+  stat_type           text NOT NULL,
+  factor_name         text NOT NULL,
+  weight              numeric NOT NULL,
+  previous_weight     numeric,
+  adjustment_reason   text,
+  resolved_grade_id   uuid,
+  version             integer NOT NULL DEFAULT 1,
+  created_at          timestamptz NOT NULL DEFAULT now()
+);
+CREATE INDEX IF NOT EXISTS idx_weights_sport_stat
+  ON public.engine1_weights (sport, stat_type);
+CREATE INDEX IF NOT EXISTS idx_weights_version
+  ON public.engine1_weights (sport, stat_type, factor_name, version DESC);
+
+ALTER TABLE public.engine1_weights ENABLE ROW LEVEL SECURITY;
+
+-- ---------------------------------------------------------------
+
+CREATE TABLE IF NOT EXISTS public.accuracy_tracking (
+  id                  uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  sport               text NOT NULL,
+  grade               text NOT NULL,
+  period              text NOT NULL DEFAULT 'all_time',
+  total_graded        integer NOT NULL DEFAULT 0,
+  total_hit           integer NOT NULL DEFAULT 0,
+  total_miss          integer NOT NULL DEFAULT 0,
+  total_push          integer NOT NULL DEFAULT 0,
+  total_void          integer NOT NULL DEFAULT 0,
+  hit_rate            numeric,
+  baseline_hit_rate   numeric,
+  baseline_locked     boolean NOT NULL DEFAULT false,
+  clv_avg             numeric,
+  engine2_agree_rate  numeric,
+  last_updated        timestamptz NOT NULL DEFAULT now(),
+  UNIQUE (sport, grade, period)
+);
+
+ALTER TABLE public.accuracy_tracking ENABLE ROW LEVEL SECURITY;