搜索功能加入

backend/app/api/endpoints/events.py

@@ -1,8 +1,12 @@
-# app/api/endpoints/events.py
+# app/api/endpoints/events.py
+import json
+import os
 import time
-from datetime import timedelta
-from typing import Dict, List, Tuple
+from datetime import datetime, timedelta, timezone
+from typing import Dict, Tuple
 
+import numpy as np
+from dotenv import load_dotenv
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy.orm import Session
 
@@ -19,63 +23,83 @@ from app.models.models import (
 from app.schemas.event_schema import (
     PaginatedUnifiedEventResponse,
     PlatformTrendResponse,
+    SearchTimelineResponse,
+    TimelineDataPoint,
     UnifiedEventResponse,
 )
+from app.services.fetcher_service import embedder_model
+
+load_dotenv()
+
+SEARCH_EMBEDDING_THRESHOLD = float(os.getenv("SEARCH_EMBEDDING_THRESHOLD", "0.75"))
+SEARCH_MAX_LIMIT = int(os.getenv("SEARCH_MAX_LIMIT", "30"))
+SEARCH_DEFAULT_HOURS = int(os.getenv("SEARCH_DEFAULT_HOURS", "168"))
+SEARCH_MAX_HOURS = int(os.getenv("SEARCH_MAX_HOURS", "168"))
 
 router = APIRouter()
 
-# 排名轨迹最多返回多少个点，避免长时间跨度下数据过大
+# 排名轨迹最多返回的点数，避免时间跨度过大时响应体过重。
 MAX_RANKING_POINTS = 30
 
-# --- 轻量级接口缓存配置 ---
+# 统一事件列表接口的短期缓存。
 _UNIFIED_EVENTS_CACHE: Dict[str, Tuple[float, PaginatedUnifiedEventResponse]] = {}
 CACHE_TTL_SECONDS = 60
-# ---------------------------
+
+
+def _load_vector(raw_embedding: str | None) -> np.ndarray | None:
+    """将字符串形式的向量安全解析为 numpy 数组。"""
+    if not raw_embedding:
+        return None
+    try:
+        return np.asarray(json.loads(raw_embedding), dtype=np.float32)
+    except (TypeError, ValueError, json.JSONDecodeError):
+        return None
+
+
+def _ensure_aware_datetime(dt: datetime) -> datetime:
+    """确保 datetime 带时区；SQLite 返回无时区值时按 UTC 解释。"""
+    if dt.tzinfo is None:
+        return dt.replace(tzinfo=timezone.utc)
+    return dt
+
 
 @router.get("/unified", response_model=PaginatedUnifiedEventResponse)
 def list_unified_events(
-    min_hot: int = Query(5, ge=0, description="热度阈值，仅返回 hot_score >= 此值的事件"),
+    min_hot: int = Query(5, ge=0, description="最低热度阈值"),
     hours: int = Query(48, ge=1, le=720, description="查询最近多少小时的数据"),
-    sort_by: str = Query("hot_score", description="排序字段: hot_score | created_at"),
+    sort_by: str = Query("hot_score", description="排序字段：hot_score | created_at"),
     skip: int = Query(0, ge=0, description="分页偏移量"),
-    limit: int = Query(10, ge=1, le=50, description="每页返回条数"),
+    limit: int = Query(10, ge=1, le=50, description="每页条数"),
     db: Session = Depends(get_db),
 ):
-    """分页返回统一事件，附带各平台热搜、排名轨迹和标签。"""
-    
-    # --- 1. 尝试从缓存读取 ---
+    """查询统一事件列表，并附带平台趋势与标签信息。"""
+
     cache_key = f"{min_hot}:{hours}:{sort_by}:{skip}:{limit}"
     current_time = time.time()
-    
     if cache_key in _UNIFIED_EVENTS_CACHE:
         expire_time, cached_data = _UNIFIED_EVENTS_CACHE[cache_key]
         if current_time < expire_time:
             return cached_data
-    # -----------------------
 
     time_limit = utcnow() - timedelta(hours=hours)
 
-    # 先查总数，用于前端判断是否还有更多
     base_query = db.query(UnifiedEvent).filter(
         UnifiedEvent.hot_score >= min_hot,
         UnifiedEvent.created_at >= time_limit,
     )
     total = base_query.count()
 
-    # 分页查询
     if sort_by == "created_at":
         base_query = base_query.order_by(UnifiedEvent.created_at.desc())
     else:
         base_query = base_query.order_by(UnifiedEvent.hot_score.desc(), UnifiedEvent.created_at.desc())
 
     events = base_query.offset(skip).limit(limit).all()
-
     if not events:
         return PaginatedUnifiedEventResponse(total=total, has_more=False, data=[])
 
     event_ids = [ev.id for ev in events]
 
-    # 批量查询所有相关的热搜条目（避免 N+1）
     trend_rows = (
         db.query(TrendingEvent, InfoSource.source_name)
         .join(InfoSource, TrendingEvent.source_id == InfoSource.id)
@@ -83,21 +107,16 @@ def list_unified_events(
         .all()
     )
 
-    # 按 unified_event_id 分组
-    trend_map: dict[int, list[tuple]] = {}
+    trend_map: dict[int, list[tuple[TrendingEvent, str]]] = {}
     trend_ids: list[int] = []
     for trend, source_name in trend_rows:
         trend_map.setdefault(trend.unified_event_id, []).append((trend, source_name))
         trend_ids.append(trend.id)
 
-    # 批量查询排名日志（避免逐条查询）
     ranking_map: dict[int, list[int]] = {}
     if trend_ids:
         ranking_rows = (
-            db.query(
-                RankingLog.event_id,
-                RankingLog.ranking_position,
-            )
+            db.query(RankingLog.event_id, RankingLog.ranking_position)
             .filter(
                 RankingLog.event_id.in_(trend_ids),
                 RankingLog.observed_at >= time_limit,
@@ -108,7 +127,6 @@ def list_unified_events(
         for event_id, position in ranking_rows:
             ranking_map.setdefault(event_id, []).append(position)
 
-    # 批量查询标签
     tag_map: dict[int, list[str]] = {}
     tag_rows = (
         db.query(ExtractedTopic.target_id, ExtractedTopic.topic_keyword)
@@ -122,14 +140,13 @@ def list_unified_events(
     for target_id, keyword in tag_rows:
         tag_map.setdefault(target_id, []).append(keyword)
 
-    # 组装响应
     results: list[UnifiedEventResponse] = []
     for ev in events:
         platform_list: list[PlatformTrendResponse] = []
         trends_for_ev = trend_map.get(ev.id, [])
+
         for trend, source_name in trends_for_ev:
             history = ranking_map.get(trend.id, [])
-            # 截取尾部，只保留最近的点
             if len(history) > MAX_RANKING_POINTS:
                 history = history[-MAX_RANKING_POINTS:]
 
@@ -144,17 +161,12 @@ def list_unified_events(
                 )
             )
 
-        # 取所有关联热搜条目中最新的 updated_at，代表"最后一次在平台热搜榜看到"的时间
-        last_active_at = (
-            max(t.updated_at for t, _ in trends_for_ev)
-            if trends_for_ev
-            else ev.updated_at
-        )
+        last_active_at = max(t.updated_at for t, _ in trends_for_ev) if trends_for_ev else ev.updated_at
 
         results.append(
             UnifiedEventResponse(
                 event_id=ev.id,
-                unified_title=ev.unified_title if ev.unified_title else "暂无标题",
+                unified_title=ev.unified_title if ev.unified_title else "Untitled",
                 summary=ev.ai_comprehensive_summary,
                 hot_score=ev.hot_score,
                 created_at=ev.created_at,
@@ -167,13 +179,9 @@ def list_unified_events(
     has_more = (skip + limit) < total
     response = PaginatedUnifiedEventResponse(total=total, has_more=has_more, data=results)
 
-    # --- 2. 写入缓存 ---
     if len(_UNIFIED_EVENTS_CACHE) > 1000:
-        # 防止内存无限增长
         _UNIFIED_EVENTS_CACHE.clear()
-        
     _UNIFIED_EVENTS_CACHE[cache_key] = (current_time + CACHE_TTL_SECONDS, response)
-    # ------------------
 
     return response
 
@@ -183,7 +191,7 @@ def get_unified_event(
     event_id: int,
     db: Session = Depends(get_db),
 ):
-    """按 ID 查询单个统一事件，用于推荐跳转时的聚光灯展示。"""
+    """按事件 ID 获取单个统一事件。"""
     ev = db.query(UnifiedEvent).filter(UnifiedEvent.id == event_id).first()
     if not ev:
         raise HTTPException(status_code=404, detail="Event not found")
@@ -228,6 +236,7 @@ def get_unified_event(
         history = ranking_map.get(trend.id, [])
         if len(history) > MAX_RANKING_POINTS:
             history = history[-MAX_RANKING_POINTS:]
+
         platform_list.append(
             PlatformTrendResponse(
                 source_id=trend.source_id,
@@ -239,15 +248,11 @@ def get_unified_event(
             )
         )
 
-    last_active_at = (
-        max(t.updated_at for t, _ in trend_rows)
-        if trend_rows
-        else ev.updated_at
-    )
+    last_active_at = max(t.updated_at for t, _ in trend_rows) if trend_rows else ev.updated_at
 
     return UnifiedEventResponse(
         event_id=ev.id,
-        unified_title=ev.unified_title if ev.unified_title else "暂无标题",
+        unified_title=ev.unified_title if ev.unified_title else "Untitled",
         summary=ev.ai_comprehensive_summary,
         hot_score=ev.hot_score,
         created_at=ev.created_at,
@@ -255,3 +260,205 @@ def get_unified_event(
         platforms=platform_list,
         tags=tags,
     )
+
+
+@router.get("/search_timeline", response_model=SearchTimelineResponse)
+def search_events_timeline(
+    keyword: str = Query(..., description="搜索关键词，支持正则表达式"),
+    hours: int = Query(None, ge=1, le=SEARCH_MAX_HOURS, description="查询最近多少小时的数据"),
+    mode: str = Query("hybrid", description="匹配模式：exact | semantic | hybrid"),
+    semantic_threshold: float = Query(None, ge=0.0, le=1.0, description="语义匹配相似度阈值"),
+    utc_offset_minutes: int | None = Query(None, ge=-840, le=840, description="客户端相对 UTC 的分钟偏移，东八区传 480"),
+    db: Session = Depends(get_db),
+):
+    import re
+
+    query_text = (keyword or "").strip()
+    if not query_text:
+        raise HTTPException(status_code=400, detail="keyword cannot be empty")
+
+    if hours is None:
+        hours = SEARCH_DEFAULT_HOURS
+    if hours > SEARCH_MAX_HOURS:
+        hours = SEARCH_MAX_HOURS
+
+    match_mode = (mode or "hybrid").strip().lower()
+    if match_mode not in {"exact", "semantic", "hybrid"}:
+        match_mode = "hybrid"
+
+    use_regex = match_mode in {"exact", "hybrid"}
+    use_semantic = match_mode in {"semantic", "hybrid"}
+    sim_threshold = semantic_threshold if semantic_threshold is not None else SEARCH_EMBEDDING_THRESHOLD
+
+    pattern = None
+    if use_regex:
+        try:
+            pattern = re.compile(query_text, re.IGNORECASE)
+        except re.error:
+            pattern = re.compile(re.escape(query_text), re.IGNORECASE)
+
+    query_vec: np.ndarray | None = None
+    if use_semantic:
+        try:
+            query_encoded = embedder_model.encode([query_text], normalize_embeddings=True, show_progress_bar=False)
+            if len(query_encoded) > 0:
+                query_vec = np.asarray(query_encoded[0], dtype=np.float32)
+        except Exception:
+            query_vec = None
+
+    if match_mode == "semantic" and query_vec is None:
+        use_regex = True
+        if pattern is None:
+            pattern = re.compile(re.escape(query_text), re.IGNORECASE)
+
+    time_limit = utcnow() - timedelta(hours=hours)
+    date_format = "%Y-%m-%d %H:00" if hours <= 48 else "%Y-%m-%d"
+
+    display_timezone = timezone.utc
+    if utc_offset_minutes is not None:
+        display_timezone = timezone(timedelta(minutes=utc_offset_minutes))
+
+    def _bucket_label(dt: datetime) -> str:
+        aware_dt = _ensure_aware_datetime(dt)
+        return aware_dt.astimezone(display_timezone).strftime(date_format)
+
+    all_recent_unified = db.query(UnifiedEvent).filter(UnifiedEvent.created_at >= time_limit).all()
+    all_recent_trends = db.query(TrendingEvent).filter(TrendingEvent.created_at >= time_limit).all()
+
+    matched_event_ids: set[int] = set()
+    matched_trend_points: list[tuple[int, str]] = []
+
+    for ev in all_recent_unified:
+        text_matched = False
+        if use_regex and pattern is not None:
+            text_to_search = f"{ev.unified_title or ''} {ev.ai_comprehensive_summary or ''}"
+            text_matched = bool(pattern.search(text_to_search))
+
+        semantic_matched = False
+        if use_semantic and query_vec is not None:
+            ev_vec = _load_vector(ev.center_embedding)
+            if ev_vec is not None:
+                semantic_matched = float(np.dot(query_vec, ev_vec)) >= sim_threshold
+
+        if text_matched or semantic_matched:
+            matched_event_ids.add(ev.id)
+
+    for trend in all_recent_trends:
+        text_matched = False
+        if use_regex and pattern is not None and trend.current_headline:
+            text_matched = bool(pattern.search(trend.current_headline))
+
+        semantic_matched = False
+        if use_semantic and query_vec is not None:
+            trend_vec = _load_vector(trend.title_embedding)
+            if trend_vec is not None:
+                semantic_matched = float(np.dot(query_vec, trend_vec)) >= sim_threshold
+
+        if (text_matched or semantic_matched) and trend.unified_event_id:
+            matched_event_ids.add(trend.unified_event_id)
+            matched_trend_points.append((trend.unified_event_id, _bucket_label(trend.created_at)))
+
+    matched_unified_events = [ev for ev in all_recent_unified if ev.id in matched_event_ids]
+    matched_unified_events.sort(key=lambda x: x.created_at, reverse=True)
+
+    display_events = matched_unified_events[:100]
+    display_event_ids = [ev.id for ev in display_events]
+    display_event_id_set = set(display_event_ids)
+
+    trend_map: dict[int, list[tuple[TrendingEvent, str]]] = {}
+    trend_ids: list[int] = []
+    if display_event_ids:
+        trend_rows = (
+            db.query(TrendingEvent, InfoSource.source_name)
+            .join(InfoSource, TrendingEvent.source_id == InfoSource.id)
+            .filter(TrendingEvent.unified_event_id.in_(display_event_ids))
+            .all()
+        )
+        for trend, source_name in trend_rows:
+            trend_map.setdefault(trend.unified_event_id, []).append((trend, source_name))
+            trend_ids.append(trend.id)
+
+    ranking_map: dict[int, list[int]] = {}
+    if trend_ids:
+        ranking_rows = (
+            db.query(RankingLog.event_id, RankingLog.ranking_position)
+            .filter(
+                RankingLog.event_id.in_(trend_ids),
+                RankingLog.observed_at >= time_limit,
+            )
+            .order_by(RankingLog.event_id, RankingLog.observed_at.asc())
+            .all()
+        )
+        for event_id, position in ranking_rows:
+            ranking_map.setdefault(event_id, []).append(position)
+
+    timeline_event_map: dict[str, set[int]] = {}
+    for ev in display_events:
+        timeline_event_map.setdefault(_bucket_label(ev.created_at), set()).add(ev.id)
+
+    for event_id, time_label in matched_trend_points:
+        if event_id in display_event_id_set:
+            timeline_event_map.setdefault(time_label, set()).add(event_id)
+
+    timeline_data = [
+        TimelineDataPoint(time_label=time_label, count=len(event_ids), event_ids=sorted(event_ids))
+        for time_label, event_ids in sorted(timeline_event_map.items())
+    ]
+
+    results: list[UnifiedEventResponse] = []
+    if display_event_ids:
+        tag_map: dict[int, list[str]] = {}
+        tag_rows = (
+            db.query(ExtractedTopic.target_id, ExtractedTopic.topic_keyword)
+            .filter(
+                ExtractedTopic.target_type == TargetType.EVENT,
+                ExtractedTopic.target_id.in_(display_event_ids),
+            )
+            .order_by(ExtractedTopic.relevance_score.desc(), ExtractedTopic.created_at.desc())
+            .all()
+        )
+        for target_id, kw in tag_rows:
+            tag_map.setdefault(target_id, []).append(kw)
+
+        for ev in display_events:
+            trends_for_ev = trend_map.get(ev.id, [])
+            platform_list: list[PlatformTrendResponse] = []
+            seen_platforms = set()
+
+            for trend, source_name in trends_for_ev:
+                uniq_key = f"{source_name}_{trend.current_headline}"
+                if uniq_key in seen_platforms:
+                    continue
+                seen_platforms.add(uniq_key)
+
+                history = ranking_map.get(trend.id, [])
+                if len(history) > MAX_RANKING_POINTS:
+                    history = history[-MAX_RANKING_POINTS:]
+
+                platform_list.append(
+                    PlatformTrendResponse(
+                        source_id=trend.source_id,
+                        platform_name=source_name,
+                        headline=trend.current_headline,
+                        url=trend.event_url,
+                        current_ranking=trend.current_ranking,
+                        ranking_history=history,
+                    )
+                )
+
+            last_active_at = max(t.updated_at for t, _ in trends_for_ev) if trends_for_ev else ev.updated_at
+
+            results.append(
+                UnifiedEventResponse(
+                    event_id=ev.id,
+                    unified_title=ev.unified_title if ev.unified_title else "Untitled",
+                    summary=ev.ai_comprehensive_summary,
+                    hot_score=ev.hot_score,
+                    created_at=ev.created_at,
+                    last_active_at=last_active_at,
+                    platforms=platform_list,
+                    tags=tag_map.get(ev.id, []),
+                )
+            )
+
+    return SearchTimelineResponse(keyword=query_text, timeline=timeline_data, events=results)

backend/app/schemas/event_schema.py

@@ -24,6 +24,16 @@ class UnifiedEventResponse(BaseModel):
     tags: List[str] = Field(default_factory=list)
 
 
+class TimelineDataPoint(BaseModel):
+    time_label: str
+    count: int
+    event_ids: List[int] = Field(default_factory=list)
+
+class SearchTimelineResponse(BaseModel):
+    keyword: str
+    timeline: List[TimelineDataPoint]
+    events: List[UnifiedEventResponse]
+
 class PaginatedUnifiedEventResponse(BaseModel):
     """分页包装：避免一次性返回全量数据"""
     total: int

backend/app/services/summary_service.py

@@ -135,7 +135,7 @@ def normalize_topic_keywords(topic_candidates: list[dict[str, Any]]) -> list[dic
             ):
                 cluster["score"] = item["score"]
 
-            # Prefer shorter tag as canonical keyword.
+            # 优先选择更短的标签作为规范关键词，减少同义长短词分裂。
             if len(item["keyword"]) < len(cluster["keyword"]):
                 cluster["keyword"] = item["keyword"]
         else:

frontend/package-lock.json

@@ -9,6 +9,7 @@
       "version": "0.0.0",
       "dependencies": {
         "apexcharts": "^5.10.3",
+        "date-fns": "^4.1.0",
         "pinia": "^3.0.4",
         "vue": "^3.5.29",
         "vue-router": "^5.0.3",
@@ -2869,6 +2870,16 @@
       "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
       "license": "MIT"
     },
+    "node_modules/date-fns": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
+      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/kossnocorp"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",

frontend/package.json

@@ -16,6 +16,7 @@
   },
   "dependencies": {
     "apexcharts": "^5.10.3",
+    "date-fns": "^4.1.0",
     "pinia": "^3.0.4",
     "vue": "^3.5.29",
     "vue-router": "^5.0.3",

frontend/src/api/client.ts

@@ -1,17 +1,17 @@
 /**
- * 通用 HTTP 客户端：自动注入 Bearer Token，统一处理错误
+ * 通用 HTTP 客户端：自动注入 Bearer Token，并统一处理错误返回。
  */
 import { useAuthStore } from '@/stores/auth'
 import { pinia } from '@/stores'
 import { fetchApi } from '@/config/apiBase'
 
-// 后端返回的错误消息中英映射
+// 后端错误消息中英文映射。
 const MESSAGE_MAP: Record<string, string> = {
-  'You can only operate your own resources': '只能操作自己的资源',
-  'Preference keyword already exists for this user': '该关键词已订阅',
+  'You can only operate your own resources': '只能操作你自己的资源',
+  'Preference keyword already exists for this user': '该关键词已经订阅过了',
   'Keyword cannot be empty': '关键词不能为空',
   'This delivery time already exists': '该推送时间已存在',
-  'This channel type already exists for the user': '该渠道类型已存在',
+  'This channel type already exists for the user': '该推送渠道类型已存在',
   'Schedule not found': '推送时间不存在',
   'Push endpoint not found': '推送渠道不存在',
   'Preference not found': '偏好不存在',
@@ -101,7 +101,9 @@ export async function apiDelete(path: string): Promise<void> {
     try {
       const data = JSON.parse(raw) as Record<string, unknown>
       if (typeof data.detail === 'string') detail = localizeMessage(data.detail)
-    } catch { /* ignore */ }
+    } catch {
+      /* 忽略非 JSON 错误体解析失败 */
+    }
     throw new Error(detail)
   }
 }

frontend/src/api/events.ts

@@ -1,7 +1,7 @@
 import { apiGet } from './client'
-import type { PaginatedEvents, UnifiedEvent, HeadlineRevision, SystemStats } from '@/types/event'
+import type { PaginatedEvents, UnifiedEvent, HeadlineRevision, SystemStats, SearchTimelineResponse } from '@/types/event'
 
-/** 按 ID 查询单个统一事件（用于推荐跳转聚光灯展示） */
+/** 按 ID 查询单个统一事件（用于推荐页跳转后聚焦展示） */
 export function fetchEventById(eventId: number): Promise<UnifiedEvent> {
   return apiGet<UnifiedEvent>(`/events/unified/${eventId}`)
 }
@@ -29,3 +29,19 @@ export function fetchHeadlineRevisions(params?: {
 export function fetchSystemStats(): Promise<SystemStats> {
   return apiGet<SystemStats>('/system/stats')
 }
+
+/** 按关键词查询热度时间线 */
+export function searchEventsTimeline(
+  keyword: string,
+  hours: number = 168,
+  mode: 'exact' | 'semantic' | 'hybrid' = 'hybrid'
+): Promise<SearchTimelineResponse> {
+  // JS 的 getTimezoneOffset: 本地 - UTC（东八区是 -480），这里转成 UTC+ 偏移分钟。
+  const utcOffsetMinutes = -new Date().getTimezoneOffset()
+  return apiGet<SearchTimelineResponse>('/events/search_timeline', {
+    keyword,
+    hours: hours.toString(),
+    mode,
+    utc_offset_minutes: utcOffsetMinutes.toString(),
+  })
+}

frontend/src/assets/base.css

@@ -1,4 +1,4 @@
-/* color palette from <https://github.com/vuejs/theme> */
+/* 颜色变量基于 Vue 官方主题并按项目需求调整 */
 :root {
   --vt-c-white: #ffffff;
   --vt-c-white-soft: #f8f8f8;
@@ -21,7 +21,7 @@
   --vt-c-text-dark-2: rgba(235, 235, 235, 0.64);
 }
 
-/* semantic color variables for this project */
+/* 项目语义化颜色变量 */
 :root {
   --color-background: var(--vt-c-white);
   --color-background-soft: var(--vt-c-white-soft);
@@ -81,3 +81,4 @@ body {
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
 }
+

frontend/src/components/ThemeToggle.vue

@@ -26,7 +26,7 @@ function handleToggle(event: MouseEvent) {
     Math.max(y, innerHeight - y)
   )
 
-  // @ts-ignore: TypeScript 类型可能较旧，忽略 startViewTransition 报错
+  // @ts-expect-error: TypeScript 类型可能较旧，忽略 startViewTransition 报错
   const transition = document.startViewTransition(() => {
     themeStore.toggleTheme()
   })

frontend/src/components/UnifiedEventCard.vue

@@ -0,0 +1,479 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useRouter } from 'vue-router'
+import VueApexCharts from 'vue3-apexcharts'
+import type { UnifiedEvent } from '@/types/event'
+
+const props = defineProps<{
+  event: UnifiedEvent
+}>()
+
+const router = useRouter()
+
+// 当前鼠标悬停的平台行标识
+const hoveredPlatformKey = ref<string | null>(null)
+
+function formatRelativeTime(dateStr: string) {
+  if (!dateStr) return ''
+  if (!dateStr.endsWith('Z') && !dateStr.includes('+')) {
+    dateStr += 'Z'
+  }
+  const now = Date.now()
+  const target = new Date(dateStr).getTime()
+  const diff = now - target
+  const minutes = Math.floor(diff / 60000)
+  if (minutes < 1) return '刚刚'
+  if (minutes < 60) return `${minutes} 分钟前`
+  const hours = Math.floor(minutes / 60)
+  if (hours < 24) return `${hours} 小时前`
+  const days = Math.floor(hours / 24)
+  return `${days} 天前`
+}
+
+function getHotLevel(score: number): { label: string; color: string; bg: string } {
+  if (score >= 10) return { label: '全网沸腾', color: '#ef4444', bg: 'rgba(239,68,68,0.15)' }
+  if (score >= 5) return { label: '高度关注', color: '#f97316', bg: 'rgba(249,115,22,0.15)' }
+  if (score >= 3) return { label: '上升中', color: '#3b82f6', bg: 'rgba(59,130,246,0.15)' }
+  return { label: '一般关注', color: '#6b7280', bg: 'rgba(107,114,128,0.15)' }
+}
+
+const platformIconMap: Record<string, string> = {
+  微博热搜: 'fa-brands fa-weibo',
+  微博: 'fa-brands fa-weibo',
+  知乎热榜: 'fa-brands fa-zhihu',
+  知乎: 'fa-brands fa-zhihu',
+  百度热搜: 'fa-solid fa-b',
+  今日头条: 'fa-solid fa-newspaper',
+  抖音热榜: 'fa-brands fa-tiktok',
+  抖音: 'fa-brands fa-tiktok',
+  'B站热搜': 'fa-brands fa-bilibili',
+  'bilibili 热搜': 'fa-brands fa-bilibili',
+  华尔街见闻: 'fa-solid fa-chart-line',
+  澎湃新闻: 'fa-solid fa-water',
+  财联社热门: 'fa-solid fa-coins',
+  凤凰网: 'fa-solid fa-feather',
+  贴吧: 'fa-solid fa-comments',
+}
+
+const platformColorMap: Record<string, string> = {
+  微博热搜: '#e6162d',
+  微博: '#e6162d',
+  知乎热榜: '#0066ff',
+  知乎: '#0066ff',
+  百度热搜: '#306cff',
+  今日头条: '#ff0000',
+  抖音热榜: '#000000',
+  抖音: '#000000',
+  'B站热搜': '#fb7299',
+  'bilibili 热搜': '#fb7299',
+  华尔街见闻: '#d4a853',
+  澎湃新闻: '#1e6cff',
+  财联社热门: '#c41230',
+  凤凰网: '#f8b500',
+  贴吧: '#4e6ef2',
+}
+
+function getPlatformIcon(name: string): string {
+  return platformIconMap[name] || 'fa-solid fa-globe'
+}
+
+function getPlatformColor(name: string): string {
+  return platformColorMap[name] || 'var(--text-secondary)'
+}
+
+function getRankingTrend(p: { current_ranking: number | null; ranking_history: number[] }) {
+  const rank = p.current_ranking
+  if (!rank) return { icon: 'fa-solid fa-minus', color: 'var(--text-secondary)', text: '' }
+
+  const h = p.ranking_history
+  if (h.length < 2) return { icon: 'fa-solid fa-minus', color: '#f97316', text: `TOP ${rank}` }
+
+  const prev = h[h.length - 2]
+  const curr = h[h.length - 1]
+  if (prev === undefined || curr === undefined) return { icon: 'fa-solid fa-minus', color: '#f97316', text: `TOP ${rank}` }
+  const diff = prev - curr
+
+  if (diff > 0) {
+    return { icon: 'fa-solid fa-arrow-trend-up', color: '#ef4444', text: `TOP ${rank} ↑${diff}` }
+  }
+  if (diff < 0) {
+    return { icon: 'fa-solid fa-arrow-trend-down', color: '#10b981', text: `TOP ${rank} ↓${Math.abs(diff)}` }
+  }
+  return { icon: 'fa-solid fa-equals', color: '#f97316', text: `TOP ${rank}` }
+}
+
+function getRankingChartOptions(history: number[], platformColor: string) {
+  return {
+    series: [{ name: '排名', data: history }],
+    chart: {
+      type: 'area' as const,
+      height: 56,
+      sparkline: { enabled: true },
+      animations: { enabled: true, easing: 'easeinout' as const, speed: 400 },
+    },
+    stroke: { curve: 'smooth' as const, width: 2 },
+    fill: {
+      type: 'gradient',
+      gradient: {
+        shadeIntensity: 1,
+        opacityFrom: 0.4,
+        opacityTo: 0.05,
+        stops: [0, 90, 100],
+        colorStops: [
+          { offset: 0, color: platformColor, opacity: 0.3 },
+          { offset: 100, color: platformColor, opacity: 0 },
+        ],
+      },
+    },
+    yaxis: { reversed: true },
+    colors: [platformColor],
+    tooltip: {
+      theme: 'dark',
+      fixed: { enabled: false },
+      x: { show: false },
+      y: { title: { formatter: () => '第' }, formatter: (val: number) => `${val} 名` },
+    },
+  }
+}
+
+function platformKey(eventId: number, index: number, prefix: string = ''): string {
+  return prefix ? `${prefix}-${eventId}-${index}` : `${eventId}-${index}`
+}
+
+function goToDashboard() {
+  router.push({
+    name: 'dashboard',
+    query: { event: props.event.event_id }
+  })
+}
+</script>
+
+<template>
+  <article
+    class="event-card"
+    :class="{ 'is-hot': event.hot_score >= 50 }"
+  >
+    <div class="card-top">
+      <div class="tags-row">
+        <span
+          class="hot-badge"
+          :style="{ color: getHotLevel(event.hot_score).color, background: getHotLevel(event.hot_score).bg }"
+        >
+          {{ getHotLevel(event.hot_score).label }} ({{ event.hot_score }})
+        </span>
+        <span v-for="tag in event.tags.slice(0, 3)" :key="tag" class="topic-tag">{{ tag }}</span>
+      </div>
+      <div class="event-time-range" title="左侧为首次发现时间，右侧为最后活跃时间">
+        <span>{{ formatRelativeTime(event.created_at) }}</span>
+        <template v-if="formatRelativeTime(event.created_at) !== formatRelativeTime(event.last_active_at)">
+          <i class="fa-solid fa-arrow-right time-arrow"></i>
+          <span class="active-time">{{ formatRelativeTime(event.last_active_at) }}</span>
+        </template>
+      </div>
+    </div>
+
+    <h3 class="card-title" @click="goToDashboard" style="cursor: pointer;">
+      {{ event.unified_title }}
+    </h3>
+
+    <div v-if="event.summary" class="ai-summary">
+      <i class="fa-solid fa-wand-magic-sparkles summary-icon"></i>
+      <p>
+        <span class="summary-label">AI 全局洞察：</span>
+        {{ event.summary }}
+      </p>
+    </div>
+
+    <div v-if="event.platforms.length > 0" class="platforms-list">
+      <div
+        v-for="(p, pIdx) in event.platforms"
+        :key="pIdx"
+        class="platform-block"
+        @mouseenter="hoveredPlatformKey = platformKey(event.event_id, pIdx)"
+        @mouseleave="hoveredPlatformKey = null"
+      >
+        <div class="platform-row">
+          <div class="platform-info">
+            <i
+              :class="getPlatformIcon(p.platform_name)"
+              :style="{ color: getPlatformColor(p.platform_name) }"
+            ></i>
+            <a
+              v-if="p.url"
+              :href="p.url"
+              target="_blank"
+              rel="noopener"
+              class="platform-headline platform-link"
+            >
+              {{ p.platform_name }}：{{ p.headline }}
+            </a>
+            <span v-else class="platform-headline">{{ p.platform_name }}：{{ p.headline }}</span>
+          </div>
+          <span v-if="p.current_ranking" class="ranking-badge" :style="{ color: getRankingTrend(p).color }">
+            <i :class="getRankingTrend(p).icon"></i> {{ getRankingTrend(p).text }}
+          </span>
+        </div>
+
+        <transition name="chart-expand">
+          <div
+            v-if="
+              hoveredPlatformKey === platformKey(event.event_id, pIdx) &&
+              p.ranking_history && p.ranking_history.length > 1
+            "
+            class="inline-chart"
+          >
+            <p class="chart-label">
+              <i
+                :class="getPlatformIcon(p.platform_name)"
+                :style="{ color: getPlatformColor(p.platform_name) }"
+              ></i>
+              {{ p.platform_name }}「{{ p.headline.length > 16 ? p.headline.slice(0, 16) + '...' : p.headline }}」排名轨迹
+            </p>
+            <VueApexCharts
+              type="area"
+              height="56"
+              :options="getRankingChartOptions(p.ranking_history, getPlatformColor(p.platform_name))"
+              :series="getRankingChartOptions(p.ranking_history, getPlatformColor(p.platform_name)).series"
+            />
+          </div>
+        </transition>
+      </div>
+    </div>
+  </article>
+</template>
+
+<style scoped>
+.event-card {
+  background: var(--bg-surface);
+  backdrop-filter: var(--backdrop-blur);
+  -webkit-backdrop-filter: var(--backdrop-blur);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-xl);
+  padding: 24px;
+  margin-bottom: 20px;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  box-shadow: var(--shadow-sm);
+  display: flex;
+  flex-direction: column;
+}
+
+.event-card:hover {
+  border-color: var(--brand-primary-alpha);
+  box-shadow: var(--shadow-xl);
+  transform: translateY(-2px);
+}
+
+.event-card.is-hot {
+  border-left: 4px solid #ef4444;
+}
+
+.card-top {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 10px;
+}
+
+.tags-row {
+  display: flex;
+  gap: 6px;
+  flex-wrap: wrap;
+}
+
+.hot-badge {
+  padding: 2px 8px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 700;
+}
+
+.topic-tag {
+  padding: 2px 8px;
+  border-radius: 4px;
+  font-size: 11px;
+  background: var(--bg-input);
+  color: var(--text-secondary);
+}
+
+.event-time-range {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 12px;
+  color: var(--text-secondary);
+  white-space: nowrap;
+}
+
+.time-arrow {
+  font-size: 10px;
+  color: var(--text-placeholder);
+}
+
+.active-time {
+  color: var(--brand-primary);
+  font-weight: 500;
+}
+
+.card-title {
+  font-size: 20px;
+  font-weight: 700;
+  margin: 0 0 12px;
+  line-height: 1.4;
+  color: var(--text-color);
+  transition: color 0.2s;
+}
+
+.card-title:hover {
+  color: var(--brand-primary);
+}
+
+.ai-summary {
+  display: flex;
+  gap: 12px;
+  padding: 16px;
+  border-radius: var(--radius-lg);
+  background: linear-gradient(145deg, var(--brand-primary-alpha), transparent);
+  border: 1px solid rgba(99, 102, 241, 0.1);
+  margin-bottom: 20px;
+  box-shadow: inset 0 2px 4px rgba(255,255,255,0.05);
+}
+
+.summary-icon {
+  color: var(--brand-primary);
+  margin-top: 2px;
+  flex-shrink: 0;
+  font-size: 16px;
+}
+
+.ai-summary p {
+  font-size: 14px;
+  line-height: 1.8;
+  color: var(--text-secondary);
+  margin: 0;
+  font-weight: 500;
+}
+
+.summary-label {
+  font-weight: 600;
+  background: linear-gradient(to right, #a78bfa, #818cf8);
+  -webkit-background-clip: text;
+  color: transparent;
+}
+
+.platforms-list {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.platform-block {
+  border-radius: var(--radius-md);
+  transition: background 0.15s;
+}
+
+.platform-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 12px 16px;
+  border-radius: var(--radius-md);
+  background: var(--bg-input);
+  border: 1px solid transparent;
+  font-size: 14px;
+  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.platform-block:hover .platform-row {
+  background: var(--bg-surface);
+  border-color: var(--border-subtle);
+  transform: scale(1.01);
+  box-shadow: var(--shadow-sm);
+}
+
+.platform-info {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-width: 0;
+  font-size: 14px;
+  font-weight: 500;
+}
+
+.platform-info i {
+  font-size: 16px;
+  width: 20px;
+  text-align: center;
+  flex-shrink: 0;
+}
+
+.platform-headline {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  color: var(--text-color);
+}
+
+.platform-link {
+  text-decoration: none;
+  color: inherit;
+  transition: color 0.15s;
+}
+
+.platform-link:hover {
+  color: var(--brand-primary);
+}
+
+.ranking-badge {
+  font-size: 12px;
+  font-weight: 700;
+  white-space: nowrap;
+  margin-left: 8px;
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  transition: color 0.2s;
+}
+
+.inline-chart {
+  padding: 8px 12px 10px;
+  background: var(--bg-input);
+  border-radius: 0 0 var(--radius-md) var(--radius-md);
+  margin-top: -2px;
+}
+
+.chart-label {
+  font-size: 11px;
+  color: var(--text-secondary);
+  margin: 0 0 4px;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
+.chart-label i {
+  font-size: 12px;
+}
+
+.chart-expand-enter-active {
+  transition: all 0.25s ease-out;
+}
+
+.chart-expand-leave-active {
+  transition: all 0.15s ease-in;
+}
+
+.chart-expand-enter-from,
+.chart-expand-leave-to {
+  opacity: 0;
+  max-height: 0;
+  padding-top: 0;
+  padding-bottom: 0;
+  overflow: hidden;
+}
+
+.chart-expand-enter-to,
+.chart-expand-leave-from {
+  opacity: 1;
+  max-height: 120px;
+}
+</style>

frontend/src/components/icons/IconTooling.vue

@@ -1,4 +1,4 @@
-<!-- This icon is from <https://github.com/Templarian/MaterialDesign>, distributed under Apache 2.0 (https://www.apache.org/licenses/LICENSE-2.0) license-->
+<!-- 图标来源：<https://github.com/Templarian/MaterialDesign>，遵循 Apache 2.0 许可 -->
 <template>
   <svg
     xmlns="http://www.w3.org/2000/svg"
@@ -17,3 +17,4 @@
     ></path>
   </svg>
 </template>
+

frontend/src/layouts/DashboardLayout.vue

@@ -20,6 +20,7 @@ const avatarUrl = computed(
 
 const navItems = [
   { name: '全局热点池', icon: 'fa-solid fa-fire', route: '/' },
+  { name: '事件追溯分析', icon: 'fa-solid fa-chart-line', route: '/search' },
   { name: '公关修改追踪', icon: 'fa-solid fa-mask', route: '/revisions' },
   { name: '我的泛订阅', icon: 'fa-solid fa-rss', route: '/topics' },
   { name: 'AI 简报设置', icon: 'fa-solid fa-paper-plane', route: '/delivery' },

frontend/src/router/index.ts

@@ -49,6 +49,11 @@ const router = createRouter({
           name: 'delivery',
           component: () => import('@/views/DeliveryView.vue'),
         },
+        {
+          path: 'search',
+          name: 'search',
+          component: () => import('@/views/SearchView.vue'),
+        },
       ],
     },
   ],

frontend/src/types/event.ts

@@ -20,7 +20,7 @@ export interface UnifiedEvent {
   tags: string[]
 }
 
-/** 分页包装 */
+/** 分页响应 */
 export interface PaginatedEvents {
   total: number
   has_more: boolean
@@ -48,3 +48,17 @@ export interface SystemStats {
   error_tasks_today: number
   last_sync_at: string | null
 }
+
+/** 搜索时间点数据 */
+export interface TimelineDataPoint {
+  time_label: string
+  count: number
+  event_ids: number[]
+}
+
+/** 时间线搜索结果 */
+export interface SearchTimelineResponse {
+  keyword: string
+  timeline: TimelineDataPoint[]
+  events: UnifiedEvent[]
+}

frontend/src/views/DeliveryView.vue

@@ -36,10 +36,12 @@ function showSuccess(msg: string) {
 }
 
 function getChannelLabel(_type: string): string {
+  void _type
   return '邮箱'
 }
 
 function getChannelIcon(_type: string): string {
+  void _type
   return 'fa-solid fa-envelope'
 }
 

frontend/src/views/RevisionsView.vue

@@ -4,13 +4,13 @@ import { computed, onMounted, ref } from 'vue'
 import { fetchHeadlineRevisions } from '@/api/events'
 import type { HeadlineRevision } from '@/types/event'
 
-/** 按事件分组后的修改链条 */
+/** 按事件分组后的标题修改链 */
 interface RevisionChain {
   event_id: number
   source_name: string | null
-  /** 标题演变链：从最早的 previous 到最终 revised，已去重 */
+  /** 标题演变链：从最早 previous 到最新 revised（已去重） */
   titles: string[]
-  /** 每次修改对应的时间（与 titles[i+1] 对应） */
+  /** 每一步标题对应的修改时间（与 titles[i+1] 对应） */
   change_times: string[]
   first_at: string
   last_at: string
@@ -23,7 +23,7 @@ const loading = ref(true)
 const error = ref('')
 const hoursRange = ref(48)
 
-// 平台名到图标的映射（与首页保持一致，避免同一平台在不同页面图标不一致）
+// 平台名到图标的映射（与首页保持一致，避免同一平台图标不统一）
 const platformIconMap: Record<string, string> = {
   微博热搜: 'fa-brands fa-weibo',
   微博: 'fa-brands fa-weibo',
@@ -33,7 +33,7 @@ const platformIconMap: Record<string, string> = {
   今日头条: 'fa-solid fa-newspaper',
   抖音热榜: 'fa-brands fa-tiktok',
   抖音: 'fa-brands fa-tiktok',
-  B站热搜: 'fa-brands fa-bilibili',
+  'B站热搜': 'fa-brands fa-bilibili',
   'bilibili 热搜': 'fa-brands fa-bilibili',
   华尔街见闻: 'fa-solid fa-chart-line',
   澎湃新闻: 'fa-solid fa-water',
@@ -46,7 +46,7 @@ function getPlatformIcon(name: string): string {
   return platformIconMap[name] || 'fa-solid fa-globe'
 }
 
-/** 格式化时间 */
+/** 安全解析时间：兼容后端返回未携带时区标记的字符串 */
 function safeParseTime(dateStr: string): number {
   if (!dateStr.endsWith('Z') && !dateStr.includes('+')) {
     dateStr += 'Z'
@@ -54,6 +54,7 @@ function safeParseTime(dateStr: string): number {
   return new Date(dateStr).getTime()
 }
 
+/** 格式化为相对时间 */
 function formatTime(dateStr: string): string {
   const d = new Date(safeParseTime(dateStr))
   const now = Date.now()
@@ -67,8 +68,8 @@ function formatTime(dateStr: string): string {
 }
 
 /**
- * 将原始修改记录按 event_id 分组，并在每组内拼接完整的标题演变链。
- * 规则：同组内按 created_at 升序排列，然后依次将 previous/revised 串成链条。
+ * 将修改记录按 event_id 分组，拼接成完整标题演变链。
+ * 规则：组内按 created_at 升序，依次把 previous/revised 串成链，并去掉重复节点。
  */
 const revisionChains = computed<RevisionChain[]>(() => {
   // 按 event_id 分组
@@ -81,17 +82,20 @@ const revisionChains = computed<RevisionChain[]>(() => {
 
   const chains: RevisionChain[] = []
   for (const [event_id, items] of groups) {
-    const first = items[0]
-    const last = items[items.length - 1]
-    if (!first || !last) continue
+    if (items.length === 0) continue
+
     // 组内按时间升序
     items.sort((a, b) => safeParseTime(a.created_at) - safeParseTime(b.created_at))
 
-    // 拼接标题链，避免重复（相邻记录的 revised 与下一条 previous 通常相同）
+    const first = items[0]
+    const last = items[items.length - 1]
+
+    // 拼接标题链，避免相邻记录重复
     const titles: string[] = [first.previous_headline]
     const change_times: string[] = []
+
     for (const item of items) {
-      // 若链条末尾与本条 previous 不同，说明有断层，仍然追加
+      // 如果链尾与当前 previous 不一致，说明链条中间有断层，补入 previous
       if (titles[titles.length - 1] !== item.previous_headline) {
         titles.push(item.previous_headline)
         change_times.push(item.created_at)
@@ -112,12 +116,12 @@ const revisionChains = computed<RevisionChain[]>(() => {
     })
   }
 
-  // 最终按最新修改时间降序
+  // 按最新修改时间降序
   chains.sort((a, b) => safeParseTime(b.last_at) - safeParseTime(a.last_at))
   return chains
 })
 
-/** 加载数据 */
+/** 加载修改记录 */
 async function loadRevisions() {
   loading.value = true
   error.value = ''
@@ -130,7 +134,7 @@ async function loadRevisions() {
   }
 }
 
-/** 切换时间范围 */
+/** 切换时间范围并重载 */
 function changeRange(hours: number) {
   hoursRange.value = hours
   loadRevisions()
@@ -148,14 +152,13 @@ onMounted(loadRevisions)
           公关修改追踪
         </h1>
         <p class="page-desc">
-          实时监控各平台热搜标题被暗改的记录。当爬虫检测到标题变更时会自动记录修改前后的差异。
+          实时监控各平台热搜标题被悄悄修改的记录。当爬虫检测到标题变化时，系统会自动保留修改前后的差异轨迹。
         </p>
       </div>
     </div>
 
-    <!-- 时间范围选择 -->
     <div class="filter-bar">
-      <span class="filter-label">查看范围：</span>
+      <span class="filter-label">查看范围:</span>
       <div class="filter-tabs">
         <button
           v-for="opt in [{ label: '24小时', value: 24 }, { label: '48小时', value: 48 }, { label: '7天', value: 168 }]"
@@ -170,26 +173,22 @@ onMounted(loadRevisions)
       <span class="result-count">共 {{ revisionChains.length }} 个事件 · {{ revisions.length }} 次修改</span>
     </div>
 
-    <!-- 加载状态 -->
     <div v-if="loading" class="loading-state">
       <i class="fa-solid fa-spinner fa-spin"></i>
       <span>加载中...</span>
     </div>
 
-    <!-- 错误状态 -->
     <div v-else-if="error" class="error-state">
       <i class="fa-solid fa-circle-exclamation"></i>
       <span>{{ error }}</span>
     </div>
 
-    <!-- 空状态 -->
     <div v-else-if="revisions.length === 0" class="empty-state">
       <i class="fa-solid fa-shield-check"></i>
       <p>该时段内未检测到标题修改</p>
-      <p class="empty-hint">这是个好消息！说明各平台暂无异常公关操作</p>
+      <p class="empty-hint">这是个好消息，说明当前没有明显的异常公关操作。</p>
     </div>
 
-    <!-- 修改记录列表（按事件分组，展示完整标题演变链） -->
     <div v-else class="revision-list">
       <div v-for="chain in revisionChains" :key="chain.event_id" class="revision-card">
         <div class="revision-header">
@@ -218,10 +217,8 @@ onMounted(loadRevisions)
           </div>
         </div>
 
-        <!-- 标题演变链 -->
         <div class="chain-area">
           <template v-for="(title, idx) in chain.titles" :key="idx">
-            <!-- 标题节点 -->
             <div
               class="chain-title"
               :class="{
@@ -238,7 +235,6 @@ onMounted(loadRevisions)
                 {{ formatTime(chain.change_times[idx]) }}
               </span>
             </div>
-            <!-- 箭头分隔（最后一个标题后不需要） -->
             <div v-if="idx < chain.titles.length - 1" class="chain-arrow">
               <i class="fa-solid fa-arrow-down"></i>
             </div>
@@ -275,9 +271,7 @@ onMounted(loadRevisions)
   margin: 0;
 }
 
-/* ==========================================
-   过滤栏
-========================================== */
+/* 过滤栏 */
 .filter-bar {
   display: flex;
   align-items: center;
@@ -328,9 +322,7 @@ onMounted(loadRevisions)
   margin-left: auto;
 }
 
-/* ==========================================
-   状态
-========================================== */
+/* 状态区 */
 .loading-state,
 .error-state {
   display: flex;
@@ -370,9 +362,7 @@ onMounted(loadRevisions)
   color: var(--text-placeholder);
 }
 
-/* ==========================================
-   修改记录卡片
-========================================== */
+/* 修改记录卡片 */
 .revision-list {
   display: flex;
   flex-direction: column;
@@ -451,9 +441,7 @@ onMounted(loadRevisions)
   border: 1px solid rgba(239, 68, 68, 0.2);
 }
 
-/* ==========================================
-   标题演变链
-========================================== */
+/* 标题演变链 */
 .chain-area {
   display: flex;
   flex-direction: column;
@@ -469,7 +457,7 @@ onMounted(loadRevisions)
   border: 1px solid transparent;
 }
 
-/* 原始标题 —— 红色删除线风格 */
+/* 原始标题：红色删除线 */
 .chain-title--original {
   background: rgba(239, 68, 68, 0.05);
   border-color: rgba(239, 68, 68, 0.12);
@@ -486,7 +474,7 @@ onMounted(loadRevisions)
   text-decoration-color: var(--status-error);
 }
 
-/* 中间过渡版本 —— 橙/琥珀色风格 */
+/* 中间版本：橙色提示 */
 .chain-title--middle {
   background: rgba(245, 158, 11, 0.05);
   border-color: rgba(245, 158, 11, 0.15);
@@ -501,7 +489,7 @@ onMounted(loadRevisions)
   color: var(--text-primary);
 }
 
-/* 当前最新版本 —— 绿色高亮风格 */
+/* 当前版本：绿色高亮 */
 .chain-title--current {
   background: rgba(16, 185, 129, 0.05);
   border-color: rgba(16, 185, 129, 0.12);

frontend/src/views/SearchView.vue

@@ -0,0 +1,704 @@
+<script setup lang="ts">
+import { ref, computed } from 'vue'
+import VueApexCharts from 'vue3-apexcharts'
+import { searchEventsTimeline } from '@/api/events'
+import type { SearchTimelineResponse } from '@/types/event'
+import UnifiedEventCard from '@/components/UnifiedEventCard.vue'
+
+const keyword = ref('')
+const searchResult = ref<SearchTimelineResponse | null>(null)
+const loading = ref(false)
+const hours = ref(2)
+const searchMode = ref<'exact' | 'semantic' | 'hybrid'>('hybrid')
+const selectedTimeLabel = ref<string | null>(null)
+
+const filteredEvents = computed(() => {
+  if (!searchResult.value) return []
+  if (!selectedTimeLabel.value) return searchResult.value.events
+
+  const selectedPoint = searchResult.value.timeline.find(p => p.time_label === selectedTimeLabel.value)
+  if (!selectedPoint) return []
+
+  const pointEventIds = selectedPoint.event_ids ?? []
+  if (pointEventIds.length > 0) {
+    const relatedIds = new Set(pointEventIds)
+    return searchResult.value.events.filter(event => relatedIds.has(event.event_id))
+  }
+
+  // 向后兼容：旧版后端未返回 event_ids 时，退化为时间范围过滤。
+  return searchResult.value.events.filter(event => {
+    const createdStr = event.created_at.replace('T', ' ')
+    const activeStr = event.last_active_at.replace('T', ' ')
+    const len = selectedTimeLabel.value!.length
+    const start = createdStr.substring(0, len)
+    const end = activeStr.substring(0, len)
+    const target = selectedTimeLabel.value!
+    return (start <= target && target <= end) || createdStr.startsWith(target) || activeStr.startsWith(target)
+  })
+})
+
+// 热度时间线图表配置。
+const chartOptions = ref({
+  chart: {
+    type: 'area',
+    height: 350,
+    background: 'transparent',
+    toolbar: {
+      show: true
+    },
+    animations: {
+      enabled: true,
+      easing: 'easeinout',
+      speed: 800,
+    },
+    events: {
+      markerClick: function(event: any, chartContext: any, { dataPointIndex }: any) {
+        if (searchResult.value && searchResult.value.timeline[dataPointIndex]) {
+          const clickedTime = searchResult.value.timeline[dataPointIndex].time_label
+          if (selectedTimeLabel.value === clickedTime) {
+            selectedTimeLabel.value = null
+          } else {
+            selectedTimeLabel.value = clickedTime
+            // 点击时间点后平滑滚动到事件列表。
+            setTimeout(() => {
+              document.getElementById('events-section-anchor')?.scrollIntoView({ behavior: 'smooth' })
+            }, 100)
+          }
+        }
+      }
+    }
+  },
+  theme: {
+    mode: 'dark' // 默认使用暗色图表主题，保证深浅主题下对比度都清晰。
+  },
+  dataLabels: {
+    enabled: false
+  },
+  stroke: {
+    curve: 'smooth',
+    width: 3
+  },
+  xaxis: {
+    type: 'category',
+    categories: [] as string[],
+    labels: {
+      style: {
+        colors: '#9ca3af'
+      }
+    },
+    axisBorder: {
+      show: false
+    },
+    axisTicks: {
+      show: false
+    }
+  },
+  yaxis: {
+    title: {
+      text: '热点数量',
+      style: {
+        color: '#9ca3af',
+        fontWeight: 500
+      }
+    },
+    labels: {
+      style: {
+        colors: '#9ca3af'
+      }
+    }
+  },
+  fill: {
+    type: 'gradient',
+    gradient: {
+      shadeIntensity: 1,
+      opacityFrom: 0.6,
+      opacityTo: 0.1,
+      stops: [0, 90, 100]
+    }
+  },
+  grid: {
+    borderColor: 'rgba(156, 163, 175, 0.1)',
+    strokeDashArray: 4,
+  },
+  colors: ['#6366f1'],
+  tooltip: {
+    theme: 'dark'
+  }
+})
+
+const series = ref([{
+  name: '热点分布',
+  data: [] as number[]
+}])
+
+async function handleSearch() {
+  if (!keyword.value.trim()) return
+
+  loading.value = true
+  searchResult.value = null
+  selectedTimeLabel.value = null
+  try {
+    const res = await searchEventsTimeline(keyword.value.trim(), hours.value, searchMode.value)
+    searchResult.value = res
+
+    // 查询成功后同步刷新图表横轴与序列。
+    chartOptions.value = {
+      ...chartOptions.value,
+      xaxis: {
+        ...chartOptions.value.xaxis,
+        categories: res.timeline.map(p => p.time_label)
+      }
+    }
+    series.value = [{
+      name: '热点数量',
+      data: res.timeline.map(p => p.count)
+    }]
+  } catch (error) {
+    console.error('搜索失败', error)
+  } finally {
+    loading.value = false
+  }
+}
+</script>
+
+<template>
+  <div class="search-view">
+    <div class="content-wrapper">
+      <header class="page-header">
+        <div class="header-title-row">
+          <h1 class="page-title">
+            <i class="fa-solid fa-chart-line" style="color: var(--brand-primary)"></i>
+            事件追踪分析
+          </h1>
+        </div>
+        <p class="page-desc">基于语义匹配与正则检索，分析关键词在时间维度上的热度变化与关联聚合事件。</p>
+      </header>
+
+      <div class="top-panels">
+        <div class="search-box glass-panel">
+          <h2 class="panel-title"><i class="fa-solid fa-magnifying-glass-chart"></i> 关键词搜索</h2>
+          <div class="search-controls">
+            <div class="input-wrapper">
+              <i class="fa-solid fa-magnifying-glass search-icon"></i>
+              <input
+                v-model="keyword"
+                @keyup.enter="handleSearch"
+                type="text"
+                placeholder="请输入关键词"
+                class="search-input"
+              />
+            </div>
+            <div class="time-select-wrapper">
+              <i class="fa-regular fa-clock select-icon"></i>
+              <select v-model="hours" class="time-select">
+                <option :value="2">最近 2 小时</option>
+                <option :value="12">最近 12 小时</option>
+                <option :value="24">最近 24 小时</option>
+                <option :value="48">最近 48 小时</option>
+                <option :value="168">最近 7 天</option>
+                <option :value="360">最近 15 天</option>
+              </select>
+              <i class="fa-solid fa-chevron-down select-arrow"></i>
+            </div>
+            <div class="time-select-wrapper">
+              <i class="fa-solid fa-filter select-icon"></i>
+              <select v-model="searchMode" class="time-select">
+                <option value="hybrid">混合匹配</option>
+                <option value="exact">关键词匹配</option>
+                <option value="semantic">语义匹配</option>
+              </select>
+              <i class="fa-solid fa-chevron-down select-arrow"></i>
+            </div>
+            <button class="btn btn-primary" @click="handleSearch" :disabled="loading || !keyword.trim()">
+              <i class="fa-solid fa-bolt" v-if="!loading"></i>
+              <i class="fa-solid fa-spinner fa-spin" v-else></i>
+              追踪计算
+            </button>
+          </div>
+        </div>
+
+        <div class="tips-box glass-panel">
+          <h2 class="panel-title"><i class="fa-regular fa-lightbulb"></i> 搜索建议</h2>
+          <div class="tips-content">
+            <button class="tip-tag" @click="keyword='新能源汽车'; hours=168; handleSearch()">
+              <i class="fa-solid fa-rocket"></i> 新能源汽车
+            </button>
+            <button class="tip-tag" @click="keyword='苹果公司'; hours=168; handleSearch()">
+              <i class="fa-brands fa-apple"></i> 苹果产业链
+            </button>
+            <button class="tip-tag regex-tag" @click="keyword='AI|LLM'; hours=168; handleSearch()">
+              <i class="fa-solid fa-code-branch"></i> AI / 大模型
+            </button>
+            <button class="tip-tag regex-tag" @click="keyword='美国关税'; hours=168; handleSearch()">
+              <i class="fa-solid fa-flag-usa"></i> 美国关税
+            </button>
+          </div>
+        </div>
+      </div>
+
+      <div v-if="loading" class="loading-state glass-panel">
+        <div class="spinner-wrapper">
+          <i class="fa-solid fa-circle-notch fa-spin"></i>
+        </div>
+        <p>引擎正在计算热度模型并提取时间节点，请稍候...</p>
+      </div>
+
+      <div v-else-if="searchResult" class="results-container">
+        <section class="chart-section glass-panel">
+          <div class="section-header">
+            <h2 class="section-title">
+              <i class="fa-solid fa-wave-square"></i> 时间热度脉络
+            </h2>
+            <span class="meta-info">共 {{ searchResult.timeline.length }} 个时间节点 · 覆盖 {{ searchResult.events.length }} 个聚合事件</span>
+          </div>
+
+          <div class="chart-container" v-if="searchResult.timeline.length > 0">
+            <VueApexCharts
+              type="area"
+              height="350"
+              :options="chartOptions"
+              :series="series"
+            />
+          </div>
+          <div v-else class="empty-state">
+            <i class="fa-regular fa-folder-open"></i>
+            <p>该时间范围暂无热度节点</p>
+          </div>
+        </section>
+
+        <section id="events-section-anchor" class="events-section">
+          <div class="section-header">
+            <h2 class="section-title">
+              <i class="fa-solid fa-layer-group"></i> 关联深度聚合事件
+              <span v-if="selectedTimeLabel" class="time-filter-badge">
+                筛选: {{ selectedTimeLabel }}
+                <i class="fa-solid fa-xmark" @click="selectedTimeLabel = null"></i>
+              </span>
+            </h2>
+            <span class="meta-info">共检索到 {{ filteredEvents.length }} 个聚合事件</span>
+          </div>
+          <div class="events-grid" v-if="filteredEvents.length > 0">
+            <UnifiedEventCard
+              v-for="event in filteredEvents"
+              :key="event.event_id"
+              :event="event"
+            />
+          </div>
+          <div v-else class="empty-state glass-panel">
+            <i class="fa-solid fa-satellite-dish"></i>
+            <p v-if="selectedTimeLabel">该时间点未找到匹配事件，请尝试点击其他节点</p>
+            <p v-else>暂无关联聚合事件，可尝试扩大时间范围或更换关键词</p>
+          </div>
+        </section>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.search-view {
+  max-width: 1200px;
+  margin: 0 auto;
+  display: flex;
+  flex-direction: column;
+}
+
+.content-wrapper {
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+}
+
+.page-header {
+  margin-bottom: 8px;
+}
+
+.header-title-row {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 8px;
+}
+
+.page-title {
+  font-size: 24px;
+  font-weight: 700;
+  color: var(--text-color);
+  margin: 0;
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  letter-spacing: 0.02em;
+}
+
+.page-desc {
+  color: var(--text-secondary);
+  font-size: 14px;
+  margin: 0;
+  font-weight: 500;
+}
+
+/* 毛玻璃面板 */
+.glass-panel {
+  background: var(--bg-surface);
+  backdrop-filter: var(--backdrop-blur);
+  -webkit-backdrop-filter: var(--backdrop-blur);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-xl);
+  box-shadow: var(--shadow-sm);
+  padding: 24px;
+  transition: all 0.3s ease;
+}
+
+.glass-panel:hover {
+  box-shadow: var(--shadow-md);
+  border-color: rgba(99, 102, 241, 0.2);
+}
+
+.top-panels {
+  display: flex;
+  gap: 24px;
+  align-items: stretch;
+}
+
+.search-box {
+  flex: 2;
+  padding: 24px;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+}
+
+.tips-box {
+  flex: 1;
+  padding: 24px;
+  display: flex;
+  flex-direction: column;
+}
+
+.panel-title {
+  font-size: 16px;
+  font-weight: 600;
+  color: var(--text-color);
+  margin: 0 0 20px 0;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.panel-title i {
+  color: var(--brand-primary);
+}
+
+.tips-content {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 12px;
+}
+
+.tip-tag {
+  background: var(--bg-input);
+  border: 1px solid var(--border-subtle);
+  color: var(--text-secondary);
+  padding: 8px 14px;
+  border-radius: var(--radius-lg);
+  font-size: 13px;
+  cursor: pointer;
+  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  font-weight: 500;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.tip-tag i {
+  font-size: 14px;
+  opacity: 0.8;
+}
+
+.tip-tag:hover {
+  background: var(--brand-primary-alpha);
+  color: var(--brand-primary);
+  border-color: var(--brand-primary);
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
+}
+
+.tip-tag.regex-tag {
+  border-style: dashed;
+}
+
+.search-controls {
+  display: flex;
+  gap: 16px;
+  align-items: center;
+  flex-wrap: wrap;
+}
+
+.input-wrapper {
+  flex: 1;
+  min-width: 250px;
+  position: relative;
+  display: flex;
+  align-items: center;
+}
+
+.search-icon {
+  position: absolute;
+  left: 16px;
+  color: var(--text-placeholder);
+  font-size: 16px;
+  z-index: 1;
+}
+
+.search-input {
+  width: 100%;
+  padding: 14px 16px 14px 44px;
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  background-color: var(--bg-input);
+  color: var(--text-primary);
+  font-size: 15px;
+  font-weight: 500;
+  transition: all 0.2s;
+}
+
+.search-input:focus {
+  outline: none;
+  border-color: var(--brand-primary);
+  box-shadow: 0 0 0 3px var(--brand-primary-alpha);
+  background-color: var(--bg-surface);
+}
+
+.time-select-wrapper {
+  position: relative;
+  display: flex;
+  align-items: center;
+  min-width: 160px;
+}
+
+.select-icon {
+  position: absolute;
+  left: 14px;
+  color: var(--text-placeholder);
+  font-size: 15px;
+  pointer-events: none;
+  z-index: 1;
+}
+
+.select-arrow {
+  position: absolute;
+  right: 14px;
+  color: var(--text-placeholder);
+  font-size: 12px;
+  pointer-events: none;
+}
+
+.time-select {
+  width: 100%;
+  padding: 14px 36px 14px 40px;
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  background-color: var(--bg-input);
+  color: var(--text-primary);
+  font-size: 14px;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.2s;
+  appearance: none;
+  -webkit-appearance: none;
+}
+
+.time-select:focus {
+  outline: none;
+  border-color: var(--brand-primary);
+  box-shadow: 0 0 0 3px var(--brand-primary-alpha);
+  background-color: var(--bg-surface);
+}
+
+.time-select-wrapper:hover .time-select {
+  border-color: var(--brand-primary);
+}
+
+.time-select-wrapper:hover .select-icon,
+.time-select-wrapper:hover .select-arrow {
+  color: var(--brand-primary);
+}
+
+.btn-primary {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 14px 28px;
+  background-color: var(--brand-primary);
+  color: white;
+  border: none;
+  border-radius: var(--radius-lg);
+  font-weight: 600;
+  font-size: 15px;
+  cursor: pointer;
+  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
+}
+
+.btn-primary:hover:not(:disabled) {
+  background-color: var(--brand-primary-hover);
+  transform: translateY(-1px);
+  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
+}
+
+.btn-primary:active:not(:disabled) {
+  transform: translateY(1px);
+}
+
+.btn-primary:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+  box-shadow: none;
+}
+
+.results-container {
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+  animation: fadeIn 0.4s ease-out;
+}
+
+.section-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-end;
+  margin-bottom: 20px;
+}
+
+.section-title {
+  font-size: 18px;
+  font-weight: 700;
+  color: var(--text-color);
+  margin: 0;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.section-title i {
+  color: var(--brand-primary);
+}
+
+.time-filter-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  margin-left: 12px;
+  padding: 4px 10px;
+  background: rgba(99, 102, 241, 0.15);
+  color: var(--brand-primary);
+  border-radius: var(--radius-full);
+  font-size: 13px;
+  font-weight: 500;
+  vertical-align: middle;
+}
+
+.time-filter-badge i {
+  cursor: pointer;
+  font-size: 14px;
+  color: var(--brand-primary) !important;
+  opacity: 0.7;
+  transition: opacity 0.2s;
+}
+
+.time-filter-badge i:hover {
+  opacity: 1;
+}
+
+.meta-info {
+  font-size: 13px;
+  color: var(--text-secondary);
+  font-weight: 500;
+}
+
+.chart-section {
+  padding: 24px;
+}
+
+.chart-container {
+  margin-top: 16px;
+  margin-left: -10px; /* 视觉上抵消 apexcharts 的默认左侧留白。 */
+}
+
+.events-section {
+  margin-top: 8px;
+}
+
+.events-grid {
+  display: flex;
+  flex-direction: column;
+  /* 与 DashboardView 保持一致，列表按纵向堆叠展示。 */
+}
+
+.loading-state {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 60px 20px;
+  color: var(--text-secondary);
+  gap: 16px;
+}
+
+.spinner-wrapper {
+  font-size: 32px;
+  color: var(--brand-primary);
+}
+
+.loading-state p {
+  font-size: 15px;
+  font-weight: 500;
+}
+
+.empty-state {
+  text-align: center;
+  padding: 40px 20px;
+  color: var(--text-secondary);
+}
+
+.empty-state i {
+  font-size: 36px;
+  opacity: 0.4;
+  margin-bottom: 12px;
+  display: block;
+}
+
+.empty-state p {
+  font-size: 14px;
+  margin: 0;
+}
+
+@keyframes fadeIn {
+  from { opacity: 0; transform: translateY(10px); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+@media (max-width: 768px) {
+  .top-panels {
+    flex-direction: column;
+  }
+}
+
+@media (max-width: 640px) {
+  .search-controls {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .btn-primary {
+    justify-content: center;
+  }
+
+  .section-header {
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 8px;
+  }
+}
+</style>

frontend/vite.config.ts

@@ -2,7 +2,7 @@ import { fileURLToPath, URL } from 'node:url'
 
 import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
-import vueDevTools from 'vite-plugin-vue-devtools'
+// import vueDevTools from 'vite-plugin-vue-devtools'
 
 // https://vite.dev/config/
 export default defineConfig({