feat: events date filter and preserve list page in URL (SAC 0.7.1)

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/api/v1/events.py

@@ -1,5 +1,5 @@
 import logging
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Any
 
 from fastapi import APIRouter, Body, Depends, HTTPException, Query
@@ -100,10 +100,18 @@ def post_event(
     return JSONResponse(status_code=status_code, content=body.model_dump(mode="json"))
 
 
-def _parse_optional_dt(value: str | None) -> datetime | None:
+def _parse_optional_dt(value: str | None, *, end_of_day: bool = False) -> datetime | None:
     if not value:
         return None
-    return datetime.fromisoformat(value.replace("Z", "+00:00"))
+    raw = value.strip()
+    if len(raw) == 10 and raw[4] == "-" and raw[7] == "-":
+        dt = datetime.fromisoformat(raw)
+        if dt.tzinfo is None:
+            dt = dt.replace(tzinfo=timezone.utc)
+        if end_of_day:
+            return dt.replace(hour=23, minute=59, second=59, microsecond=999999)
+        return dt.replace(hour=0, minute=0, second=0, microsecond=0)
+    return datetime.fromisoformat(raw.replace("Z", "+00:00"))
 
 
 @router.get("", response_model=EventListResponse)
@@ -137,7 +145,7 @@ def list_events(
         stmt = stmt.where(Host.hostname.ilike(like) | Host.display_name.ilike(like))
         count_stmt = count_stmt.where(Host.hostname.ilike(like) | Host.display_name.ilike(like))
     dt_from = _parse_optional_dt(from_time)
-    dt_to = _parse_optional_dt(to_time)
+    dt_to = _parse_optional_dt(to_time, end_of_day=True)
     if dt_from:
         stmt = stmt.where(Event.occurred_at >= dt_from)
         count_stmt = count_stmt.where(Event.occurred_at >= dt_from)

backend/app/version.py

@@ -1,5 +1,5 @@
 """Единый источник версии SAC (API, health, логи, OpenAPI)."""
 
 APP_NAME = "Security Alert Center"
-APP_VERSION = "0.7.0"
+APP_VERSION = "0.7.1"
 APP_VERSION_LABEL = f"{APP_NAME} v.{APP_VERSION}"