feat: hide event types from SAC UI via Settings checkbox (0.20.23)

Per-type «Показывать в событиях» in severity settings; filters lists, dashboard, hosts, and problems.

backend/app/api/v1/hosts.py

@@ -1,4 +1,4 @@
-from fastapi import APIRouter, Depends, HTTPException, Query, status
+from fastapi import APIRouter, Depends, HTTPException, Query, status
 from pydantic import BaseModel
 from sqlalchemy import func, select
 from sqlalchemy.orm import Session
@@ -56,10 +56,19 @@ from app.services.host_health import (
     max_daily_report_time_by_host,
     max_event_time_by_host,
 )
+from app.services.event_type_visibility import get_hidden_event_types, visibility_type_filter
 
 router = APIRouter(prefix="/hosts", tags=["hosts"])
 
 
+def _count_visible_events(db: Session, host_id: int, hidden: frozenset[str]) -> int:
+    stmt = select(func.count()).select_from(Event).where(Event.host_id == host_id)
+    type_filter = visibility_type_filter(hidden)
+    if type_filter is not None:
+        stmt = stmt.where(type_filter)
+    return int(db.scalar(stmt) or 0)
+
+
 @router.get("", response_model=HostListResponse)
 def list_hosts(
     page: int = Query(1, ge=1),
@@ -108,12 +117,11 @@ def list_hosts(
         latest_map,
         git_versions=git_release.versions,
     )
+    hidden = get_hidden_event_types(db)
 
     items: list[HostSummary] = []
     for host in rows:
-        event_count = db.scalar(
-            select(func.count()).select_from(Event).where(Event.host_id == host.id)
-        )
+        event_count = _count_visible_events(db, host.id, hidden)
         last_hb = hb_map.get(host.id)
         items.append(
             HostSummary(
@@ -161,9 +169,8 @@ def _host_detail_from_model(
 ) -> HostDetail:
     hb_map = max_event_time_by_host(db, HEARTBEAT_TYPE)
     report_map = max_daily_report_time_by_host(db)
-    event_count = db.scalar(
-        select(func.count()).select_from(Event).where(Event.host_id == host.id)
-    )
+    hidden = get_hidden_event_types(db)
+    event_count = _count_visible_events(db, host.id, hidden)
     last_hb = hb_map.get(host.id)
     latest_map = latest_agent_versions_by_product(db)
     update_cfg = get_effective_agent_update_config(db)