refs #706: add Smilegate QA history benchmark

sql/adb/47_smilegate_qa_history.sql

@@ -0,0 +1,62 @@
+-- Smilegate customer Excel QA benchmark history.
+-- This script is also applied by poc4_active_source_20260714/scripts/
+-- sync_smilegate_qa_history.py with existence checks for repeatable deployment.
+
+CREATE TABLE SG_AI_QA_QUESTION (
+    question_id NUMBER GENERATED BY DEFAULT ON NULL AS IDENTITY PRIMARY KEY,
+    question_code VARCHAR2(30) UNIQUE,
+    question_source VARCHAR2(30) NOT NULL,
+    question_hash VARCHAR2(64) NOT NULL UNIQUE,
+    category VARCHAR2(30) NOT NULL,
+    title VARCHAR2(200) NOT NULL,
+    question_text CLOB NOT NULL,
+    source_document VARCHAR2(255),
+    source_sheet VARCHAR2(255),
+    source_row NUMBER,
+    source_scenario CLOB,
+    sample_sql CLOB,
+    expected_focus CLOB,
+    baseline_sql CLOB,
+    baseline_answer CLOB,
+    support_level VARCHAR2(20) NOT NULL,
+    evaluation_rule_json CLOB CHECK (evaluation_rule_json IS JSON),
+    active_yn CHAR(1) DEFAULT 'Y' NOT NULL CHECK (active_yn IN ('Y', 'N')),
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT SYSTIMESTAMP NOT NULL,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT SYSTIMESTAMP NOT NULL,
+    CONSTRAINT sg_ai_qa_question_source_ck
+        CHECK (question_source IN ('CUSTOMER_EXCEL', 'FREE_TEXT'))
+);
+
+CREATE TABLE SG_AI_QA_ANSWER (
+    answer_seq NUMBER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    question_id NUMBER NOT NULL,
+    answer_kind VARCHAR2(20) NOT NULL,
+    run_key VARCHAR2(100),
+    conversation_id VARCHAR2(100),
+    requested_by VARCHAR2(100),
+    requested_at TIMESTAMP WITH TIME ZONE DEFAULT SYSTIMESTAMP NOT NULL,
+    model_profile VARCHAR2(100),
+    generated_sql CLOB,
+    answer_text CLOB,
+    result_json CLOB CHECK (result_json IS JSON),
+    execution_output CLOB,
+    execution_status VARCHAR2(40),
+    judgment_status VARCHAR2(20) NOT NULL,
+    judgment_reason CLOB,
+    duration_ms NUMBER,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT SYSTIMESTAMP NOT NULL,
+    CONSTRAINT sg_ai_qa_answer_question_fk
+        FOREIGN KEY (question_id)
+        REFERENCES SG_AI_QA_QUESTION (question_id)
+        ON DELETE CASCADE,
+    CONSTRAINT sg_ai_qa_answer_kind_ck
+        CHECK (answer_kind IN ('HISTORICAL', 'LIVE')),
+    CONSTRAINT sg_ai_qa_answer_judgment_ck
+        CHECK (judgment_status IN ('PASS', 'WARN', 'FAIL', 'REVIEW'))
+);
+
+CREATE INDEX sg_ai_qa_answer_question_ix
+    ON SG_AI_QA_ANSWER (question_id, answer_seq DESC);
+
+CREATE UNIQUE INDEX sg_ai_qa_answer_run_uk
+    ON SG_AI_QA_ANSWER (question_id, run_key);