fix: 供销协议CRUD自动生成合同编号+级联删除明细

- add_supply_contracts.dspy: 自动生成contract_code(SC-YYYYMMDD-NNNN)
- add_supply_contracts.dspy: 自动填充created_by/created_at/updated_at
- delete_supply_contracts.dspy: 删除协议时级联删除产品折扣明细

wwwroot/supply_contracts_list/add_supply_contracts.dspy

@@ -24,6 +24,21 @@ if not userorgid:
 	}
 ns['resellerid'] = userorgid
 
+# Auto-generate contract_code if not provided
+if not ns.get('contract_code'):
+    from datetime import datetime as _dt
+    _prefix = f"SC-{_dt.now().strftime('%Y%m%d')}"
+    async with DBPools().sqlorContext(get_module_dbname('supplychain')) as _sor:
+        _recs = await _sor.sqlExe(
+            "SELECT COUNT(*) as cnt FROM supply_contracts WHERE resellerid = ${rid}$ AND contract_code LIKE ${p}$",
+            {"rid": userorgid, "p": _prefix + "%"}
+        )
+        _seq = (_recs[0].cnt if _recs else 0) + 1
+    ns['contract_code'] = f"{_prefix}-{_seq:04d}"
+ns['created_by'] = userorgid
+ns['created_at'] = timestampstr()
+ns['updated_at'] = timestampstr()
+
 db = DBPools()
 dbname = get_module_dbname('supplychain')
 async with db.sqlorContext(dbname) as sor:

wwwroot/supply_contracts_list/delete_supply_contracts.dspy

@@ -21,6 +21,8 @@ ns['resellerid'] = userorgid
 db = DBPools()
 dbname = get_module_dbname('supplychain')
 async with db.sqlorContext(dbname) as sor:
+	# Cascade delete contract items first
+	await sor.D('supply_contract_items', {'contract_id': params_kw['id'], 'resellerid': userorgid})
 	r = await sor.D('supply_contracts', ns)
 	debug('delete success');
 	return {