fix(llmage): 规范检查修复

- accounting.py: 删除重复datetime导入, 清理未使用env变量
- failed_accounting.ui: Button text→label(规范), DatePicker→TextInput(不确定的widget)
- index.ui: backgroundColor→bgcolor(规范), 3处修复
- llmusage_accounting_failed_update.dspy: 删除ServerEnv()违规(.dspy禁用), 用datetime替代
- 新增llmusage_history只读DSPY(create/update/delete返回只读提示)

llmage/accounting.py

@@ -242,7 +242,6 @@ async def llm_accoung_failed(luid, reason=None):
 async def backup_accounted_llmusage():
 	"""Backup yesterday's accounted records to history table and remove from llmusage."""
 	env = ServerEnv()
-	from datetime import datetime, timedelta
 	yesterday = (datetime.now() - timedelta(days=1)).strftime('%Y-%m-%d')
 	ts = env.timestampstr()
 	batched = 0
@@ -295,8 +294,7 @@ async def get_failed_accounting_records(filters=None, page=1, page_size=50):
 		- start_date: filter use_date >= start_date
 		- end_date: filter use_date <= end_date
 	"""
-	env = ServerEnv()
-	async with get_sor_context(env, 'llmage') as sor:
+	async with get_sor_context(ServerEnv(), 'llmage') as sor:
 		conditions = []
 		ns = {}
 		if filters:

wwwroot/api/llmusage_accounting_failed_update.dspy

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 import json
-from ahserver.serverenv import ServerEnv
+from datetime import datetime
 
 result = {'success': False, 'message': ''}
 
@@ -15,8 +15,7 @@ try:
             data['id'] = rid
             # Mark as handled - set handled_time
             if data.get('handled') == '1' and not data.get('handled_time'):
-                env = ServerEnv()
-                data['handled_time'] = env.timestampstr()
+                data['handled_time'] = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
             await sor.U('llmusage_accounting_failed', data)
             result['success'] = True
             result['message'] = '更新成功'

wwwroot/api/llmusage_history_create.dspy

@@ -0,0 +1,4 @@
+#!/usr/bin/env python3
+import json
+result = {'success': False, 'message': '历史数据为只读，不可新增'}
+return json.dumps(result, ensure_ascii=False, default=str)

wwwroot/api/llmusage_history_delete.dspy

@@ -0,0 +1,4 @@
+#!/usr/bin/env python3
+import json
+result = {'success': False, 'message': '历史数据为只读，不可删除'}
+return json.dumps(result, ensure_ascii=False, default=str)

wwwroot/api/llmusage_history_update.dspy

@@ -0,0 +1,4 @@
+#!/usr/bin/env python3
+import json
+result = {'success': False, 'message': '历史数据为只读，不可修改'}
+return json.dumps(result, ensure_ascii=False, default=str)

wwwroot/failed_accounting.ui

@@ -27,7 +27,7 @@
                     "options": {"spacing": 4},
                     "subwidgets": [
                         {"widgettype": "Text", "options": {"text": "开始日期", "fontSize": "12px"}},
-                        {"widgettype": "DatePicker", "id": "start_date", "options": {"width": "150px"}}
+                        {"widgettype": "TextInput", "id": "start_date", "options": {"width": "150px", "placeholder": "YYYY-MM-DD"}}
                     ]
                 },
                 {
@@ -35,7 +35,7 @@
                     "options": {"spacing": 4},
                     "subwidgets": [
                         {"widgettype": "Text", "options": {"text": "结束日期", "fontSize": "12px"}},
-                        {"widgettype": "DatePicker", "id": "end_date", "options": {"width": "150px"}}
+                        {"widgettype": "TextInput", "id": "end_date", "options": {"width": "150px", "placeholder": "YYYY-MM-DD"}}
                     ]
                 },
                 {
@@ -66,7 +66,7 @@
                             "widgettype": "Button",
                             "id": "search_btn",
                             "options": {
-                                "text": "查询",
+                                "label": "查询",
                                 "bgcolor": "#1976d2",
                                 "color": "#ffffff",
                                 "width": "80px"

wwwroot/index.ui

@@ -24,7 +24,7 @@
                 {
                     "widgettype": "VBox",
                     "options": {
-                        "backgroundColor": "#1e3a5f",
+                        "bgcolor": "#1e3a5f",
                         "padding": "24px",
                         "cursor": "pointer",
                         "borderRadius": "8px"
@@ -71,7 +71,7 @@
                 {
                     "widgettype": "VBox",
                     "options": {
-                        "backgroundColor": "#1e3a5f",
+                        "bgcolor": "#1e3a5f",
                         "padding": "24px",
                         "cursor": "pointer",
                         "borderRadius": "8px"
@@ -118,7 +118,7 @@
                 {
                     "widgettype": "VBox",
                     "options": {
-                        "backgroundColor": "#1e3a5f",
+                        "bgcolor": "#1e3a5f",
                         "padding": "24px",
                         "cursor": "pointer",
                         "borderRadius": "8px"