Release v1.0.91: document no SQLite FK between business tables

scripts/db/display_metadata_validator.py

@@ -30,6 +30,7 @@ _ENGLISH_PLACEHOLDER_NAME_PATTERNS = (
 )
 _KEBAB_SLUG = re.compile(r"^[a-z0-9]+(?:-[a-z0-9]+)*$")
 _CJK_RE = re.compile(r"[\u4e00-\u9fff]")
+_FK_DDL_PATTERN = re.compile(r"\bFOREIGN\s+KEY\b|\bREFERENCES\b", re.I)
 
 
 @dataclass
@@ -412,6 +413,27 @@ def _table_exists(cursor, table_name: str) -> bool:
     return cursor.fetchone() is not None
 
 
+def validate_no_sqlite_foreign_keys(cursor) -> tuple[list[str], list[str]]:
+    """业务表 DDL 不得含 FOREIGN KEY / REFERENCES（关联走 repository/service）。"""
+    errors: list[str] = []
+    cursor.execute(
+        """
+        SELECT name, sql FROM sqlite_master
+        WHERE type = 'table' AND name NOT LIKE 'sqlite_%'
+        """
+    )
+    for table_name, sql in cursor.fetchall():
+        if table_name in METADATA_TABLES:
+            continue
+        ddl = str(sql or "")
+        if ddl and _FK_DDL_PATTERN.search(ddl):
+            errors.append(
+                f"业务表 {table_name!r} 的 DDL 含 SQLite FOREIGN KEY/REFERENCES；"
+                "请改为业务 id 列 + repository/service 逻辑关联（见 references/SCHEMA.md）"
+            )
+    return errors, []
+
+
 def validate_display_metadata(conn: sqlite3.Connection, *, check_column_order: bool = True) -> ValidationReport:
     report = ValidationReport()
     cur = conn.cursor()
@@ -425,6 +447,9 @@ def validate_display_metadata(conn: sqlite3.Connection, *, check_column_order: b
     if not has_tables_meta or not has_columns_meta:
         return report
 
+    fk_errors, _ = validate_no_sqlite_foreign_keys(cur)
+    report.errors.extend(fk_errors)
+
     for table_name in iter_user_tables(cur):
         cur.execute(
             "SELECT display_name FROM _jiangchang_tables WHERE table_name = ?",
@@ -514,5 +539,5 @@ def validate_display_metadata(conn: sqlite3.Connection, *, check_column_order: b
 
 
 def validate_template_database(conn: sqlite3.Connection) -> ValidationReport:
-    """模板自检入口：校验展示元数据完整性。模板默认无业务表。"""
+    """模板自检入口：校验展示元数据完整性，并扫描业务表 DDL 是否含 SQLite 外键。"""
     return validate_display_metadata(conn)