feat: acquire-core full legacy C corpus (~2066 files, build-verified) + generator + inventory

db/vl_ddl_0004.sql

@@ -0,0 +1,23 @@
+-- vl_ddl_0004.sql - 정합성 DBIO 스키마/뷰 정의 (hard)
+-- 런타임 PostgreSQL 에 적용. 컴파일에는 불필요.
+
+CREATE TABLE IF NOT EXISTS vl_ledger (
+    key       VARCHAR(15)  NOT NULL,
+    merch_id  VARCHAR(15)  NOT NULL,
+    card_no   VARCHAR(19)  NOT NULL,
+    amount    BIGINT       NOT NULL DEFAULT 0,
+    biz_date  CHAR(8)      NOT NULL,
+    status    CHAR(1)      NOT NULL DEFAULT 'R',
+    fee       BIGINT       NOT NULL DEFAULT 0,
+    reg_ts    TIMESTAMP    NOT NULL DEFAULT now(),
+    upd_ts    TIMESTAMP,
+    CONSTRAINT pk_vl_ledger PRIMARY KEY (key)
+);
+
+CREATE INDEX IF NOT EXISTS ix_vl_ddl_0004_date_status
+    ON vl_ledger (biz_date, status);
+
+CREATE OR REPLACE VIEW vl_ddl_0004_daily_v AS
+    SELECT biz_date, status, count(*) AS cnt, sum(amount) AS total
+    FROM vl_ledger
+    GROUP BY biz_date, status;