refs #708 #739: use Cohere command and vector game scope

sql/adb/117_sg_game_scope_policy.sql

@@ -0,0 +1,44 @@
+-- Customer-managed score policy for vector-only game identity resolution.
+
+BEGIN
+  EXECUTE IMMEDIATE q'[
+    CREATE TABLE sg_game_scope_policy (
+      policy_key   VARCHAR2(128) PRIMARY KEY,
+      number_value NUMBER,
+      text_value   VARCHAR2(4000),
+      description  VARCHAR2(1000) NOT NULL,
+      active_yn    CHAR(1) DEFAULT 'Y' NOT NULL,
+      updated_at   TIMESTAMP(6) DEFAULT SYSTIMESTAMP NOT NULL,
+      CONSTRAINT sg_game_scope_policy_active_ck CHECK (active_yn IN ('Y', 'N'))
+    )]';
+EXCEPTION
+  WHEN OTHERS THEN
+    IF SQLCODE != -955 THEN RAISE; END IF;
+END;
+/
+
+MERGE INTO sg_game_scope_policy t
+USING (
+  SELECT 'GAME_ALIAS_MAX_COSINE_DISTANCE' AS policy_key,
+         0.500000 AS number_value,
+         CAST(NULL AS VARCHAR2(4000)) AS text_value,
+         'Maximum cosine distance for accepting the closest independently embedded game alias.' AS description
+    FROM dual
+) s
+ON (t.policy_key = s.policy_key)
+WHEN MATCHED THEN UPDATE SET
+  t.description = s.description,
+  t.active_yn = 'Y',
+  t.updated_at = SYSTIMESTAMP
+WHEN NOT MATCHED THEN INSERT (
+  policy_key, number_value, text_value, description, active_yn
+) VALUES (
+  s.policy_key, s.number_value, s.text_value, s.description, 'Y'
+);
+/
+
+COMMENT ON TABLE sg_game_scope_policy IS
+  'Customer-managed game scope policy values; changing a value requires no application deployment.';
+COMMENT ON COLUMN sg_game_scope_policy.number_value IS
+  'Numeric policy value. GAME_ALIAS_MAX_COSINE_DISTANCE applies to the closest alias vector.';
+/