refactor(monitoring): simplify brand dashboard and harden citation rendering

- drop brand_time_buckets and sparkline/coverage UI; dashboard now returns a single day
- compute mention rate from total actual samples instead of averaging per-platform rates
- canonicalize ai_platform_id across services and aggregate platform-overview snapshots
- strip mojibake and non-answer noise from callback payloads and question detail answers
- keep Kimi citations panel-only; still store raw search_results for audit
- render linked [n] inline citations for qwen/yuanbao answers with scroll-to-source behavior
- restrict立即采集 to today's business date with a clear i18n hint
- refresh content-citations into an ant-design table with truncation and hover styling

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/shared-types/src/index.ts

@@ -1085,22 +1085,6 @@ export interface MonitoringPlatformBreakdownItem {
   last_sampled_at: string | null;
 }
 
-export interface MonitoringTimeBucket {
-  date: string;
-  sample_status: string;
-  metric_value: number | null;
-  mention_rate: number | null;
-  top1_mention_rate: number | null;
-  first_recommend_rate: number | null;
-  positive_mention_rate: number | null;
-  citation_rate: number | null;
-  planned_sample_count: number;
-  actual_sample_count: number;
-  coverage_rate: number | null;
-  trigger_source: string | null;
-  snapshot_updated_at: string | null;
-}
-
 export interface MonitoringHotQuestion {
   question_id: number;
   question_hash: string;
@@ -1134,7 +1118,6 @@ export interface MonitoringDashboardCompositeResponse {
   overview: MonitoringOverview;
   runtime: MonitoringDashboardRuntime;
   platform_breakdown: MonitoringPlatformBreakdownItem[];
-  brand_time_buckets: MonitoringTimeBucket[];
   hot_questions: MonitoringHotQuestion[];
   citation_ranking: MonitoringCitationRankingItem[];
   cited_articles: MonitoringCitedArticle[];
@@ -1163,6 +1146,7 @@ export interface MonitoringQuestionDetailPlatform {
   brand_mentioned: boolean | null;
   brand_mention_position: string | null;
   citations: MonitoringQuestionDetailCitation[];
+  inline_citations?: MonitoringSourceItem[];
 }
 
 export interface MonitoringQuestionCitationAnalysisItem {