feat(prompts): add prompts loader and configuration management

- Implemented a new prompts loader in `loader.go` to manage prompt templates and configurations.
- Introduced caching mechanism for prompt configurations to optimize loading.
- Added functions to apply platform-specific prompt template overrides.
- Created unit tests in `loader_test.go` to validate prompt configuration loading and reloading behavior.
- Ensured that the last valid configuration is retained in case of errors during reload.

apps/admin-web/src/lib/api.ts

@@ -558,6 +558,7 @@ export const monitoringApi = {
     keyword_id?: number | null;
     days?: number;
     business_date?: string;
+    ai_platform_id?: string;
   }) {
     return apiClient.get<MonitoringDashboardCompositeResponse>("/api/tenant/monitoring/dashboard/composite", {
       params,