feat(bat): 补全工作流校验与调度过滤

新增 parse clear-cache 和 i18n validate，补齐 schedule 的作用域过滤与单轮执行上限，并将列表过滤参数暴露给 bat-api dashboard。同步 RPC、OpenAPI、用户文档和回归测试。

Refs #43

internal/api/openapi.go

@@ -118,6 +118,20 @@ paths:
   /admin/schedules:
     get:
       summary: List Rust-owned resource workflow schedules
+      parameters:
+        - name: id
+          in: query
+          schema:
+            type: string
+        - name: group
+          in: query
+          schema:
+            type: string
+            enum: [res, parse, i18n]
+        - name: enabled
+          in: query
+          schema:
+            type: boolean
       responses:
         "200":
           description: Current schedule JSON report.
@@ -167,6 +181,10 @@ paths:
                 count:
                   type: integer
                   format: int64
+                max_runs:
+                  type: integer
+                  format: int64
+                  minimum: 1
                 clear_args:
                   type: boolean
                 clear_every: