feat(workbench): complete company view — health trend, major events, milestones, team, synergy + dashboard click-through

backend/app/schemas/company.py

@@ -130,15 +130,74 @@ class BoardMeetingBrief(BaseModel):
     meeting_at: datetime | None = None
 
 
+class MajorEventBrief(BaseModel):
+    """重大事项摘要。"""
+
+    id: str
+    event_type: str
+    title: str
+    description: str | None = None
+    severity: str = "medium"
+    status: str = "identified"
+    occurred_at: datetime | None = None
+
+
+class MilestoneBrief(BaseModel):
+    """里程碑摘要。"""
+
+    id: str
+    name: str
+    status: str = "planned"
+    is_current: bool = False
+    target_date: datetime | None = None
+    actual_date: datetime | None = None
+    description: str | None = None
+
+
+class TeamMemberBrief(BaseModel):
+    """团队成员摘要。"""
+
+    id: str
+    name: str
+    role: str | None = None
+    is_key_person: bool = False
+    stability_score: float | None = None
+    joined_at: datetime | None = None
+
+
+class SynergyBrief(BaseModel):
+    """协同机会摘要。"""
+
+    id: str
+    type: str
+    title: str
+    description: str | None = None
+    status: str = "discovered"
+    match_reason: str | None = None
+
+
+class HealthScoreHistoryPoint(BaseModel):
+    """健康度历史数据点。"""
+
+    period: str
+    total_score: float
+    calculated_at: datetime
+
+
 class CompanyDetailResponse(BaseModel):
     """企业详情聚合响应 — 工作台使用。"""
 
     company: CompanyResponse
     health_score: HealthScoreBrief | None = None
+    health_score_history: list[HealthScoreHistoryPoint] = []
     recent_reports: list[ReportBrief] = []
     open_risks: list[RiskBrief] = []
     recent_weak_signals: list[WeakSignalBrief] = []
     active_agreements: list[AgreementBrief] = []
     recent_board_meetings: list[BoardMeetingBrief] = []
+    major_events: list[MajorEventBrief] = []
+    milestones: list[MilestoneBrief] = []
+    team_members: list[TeamMemberBrief] = []
+    synergy_opportunities: list[SynergyBrief] = []
     financial_data_count: int = 0
     latest_financial: dict | None = None