feat: wire normalized learning store into dotnet

docs/db/quantengine.dbml

@@ -1,6 +1,6 @@
 // =============================================================================
 // QuantEngine Database Schema (DBML)
-// DbUp 마이그레이션(V1~V3)과 1:1 동기화 — 마이그레이션 추가 시 이 파일도 반드시 갱신
+// DbUp 마이그레이션(V1~V5)과 1:1 동기화 — 마이그레이션 추가 시 이 파일도 반드시 갱신
 // (CLAUDE.md 규칙: schema 변경 → DBML + 문서 동기화)
 //
 // 참고: Hangfire 스키마는 Hangfire.PostgreSql 라이브러리가 자동 생성
@@ -277,6 +277,12 @@ TableGroup "engine_history" {
   factor_output_history
   decision_result_history
   market_vs_engine_gap_history
+  source_observation
+  factor_definition
+  factor_observation
+  decision_event
+  decision_factor_evidence
+  outcome_evaluation
 }
 
 Table engine_history.market_raw_history {
@@ -375,6 +381,88 @@ Table engine_history.market_vs_engine_gap_history {
   Note: "시장 데이터 vs 엔진 계산 갭 분석 이력"
 }
 
+// =============================================================================
+// Schema: engine_history (V5 normalized learning history)
+// =============================================================================
+
+Table engine_history.source_observation {
+  observation_id UUID [pk]
+  observed_at TIMESTAMPTZ [not null]
+  instrument_id TEXT [not null]
+  source_name TEXT [not null]
+  source_version TEXT [not null]
+  payload JSONB [not null]
+  provenance JSONB [not null, default: "'{}'::jsonb"]
+  created_at TIMESTAMPTZ [not null, default: "NOW()"]
+}
+
+Table engine_history.factor_definition {
+  factor_id TEXT [not null]
+  factor_version TEXT [not null]
+  formula_id TEXT [not null]
+  effective_from TIMESTAMPTZ [not null]
+  effective_to TIMESTAMPTZ
+  definition JSONB [not null, default: "'{}'::jsonb"]
+  provenance JSONB [not null, default: "'{}'::jsonb"]
+
+  indexes {
+    (factor_id, factor_version) [pk]
+  }
+}
+
+Table engine_history.factor_observation {
+  factor_observation_id UUID [pk]
+  observation_id UUID [not null]
+  factor_id TEXT [not null]
+  factor_version TEXT [not null]
+  observed_at TIMESTAMPTZ [not null]
+  numeric_value NUMERIC
+  text_value TEXT
+  gate TEXT [not null]
+  provenance JSONB [not null, default: "'{}'::jsonb"]
+}
+
+Table engine_history.decision_event {
+  decision_id UUID [pk]
+  decision_key TEXT [not null, unique]
+  decided_at TIMESTAMPTZ [not null]
+  instrument_id TEXT [not null]
+  action TEXT [not null]
+  gate TEXT [not null]
+  score NUMERIC
+  source_version TEXT [not null]
+  trace JSONB [not null, default: "'{}'::jsonb"]
+  provenance JSONB [not null, default: "'{}'::jsonb"]
+  created_at TIMESTAMPTZ [not null, default: "NOW()"]
+}
+
+Table engine_history.decision_factor_evidence {
+  decision_id UUID [not null]
+  factor_observation_id UUID [not null]
+  role TEXT [not null]
+
+  indexes {
+    (decision_id, factor_observation_id) [pk]
+  }
+}
+
+Table engine_history.outcome_evaluation {
+  evaluation_id UUID [pk]
+  decision_id UUID [not null]
+  horizon_days INT [not null]
+  evaluated_at TIMESTAMPTZ [not null]
+  realized_return NUMERIC
+  benchmark_return NUMERIC
+  excess_return NUMERIC
+  outcome_class TEXT [not null]
+  evaluation_gate TEXT [not null]
+  provenance JSONB [not null, default: "'{}'::jsonb"]
+
+  indexes {
+    (decision_id, horizon_days) [unique]
+  }
+}
+
 // =============================================================================
 // Relationships (Logical, not enforced as FKs in DDL)
 // =============================================================================
@@ -390,3 +478,9 @@ Ref: quantengine.kis_collection_errors.run_id > quantengine.kis_collection_runs.
 Ref: quantengine.workspace_session.username > quantengine.workspace_account.username {
   // logical relationship: session belongs to a user
 }
+
+Ref: engine_history.factor_observation.observation_id > engine_history.source_observation.observation_id
+Ref: engine_history.factor_observation.(factor_id, factor_version) > engine_history.factor_definition.(factor_id, factor_version)
+Ref: engine_history.decision_factor_evidence.decision_id > engine_history.decision_event.decision_id
+Ref: engine_history.decision_factor_evidence.factor_observation_id > engine_history.factor_observation.factor_observation_id
+Ref: engine_history.outcome_evaluation.decision_id > engine_history.decision_event.decision_id