From 54690997ec363c3d1d54f3dfb4203a5276d36b15 Mon Sep 17 00:00:00 2001
From: Boudbois2271 <ijrd275@gmail.com>
Date: Mon, 15 Jun 2026 08:09:19 +0200
Subject: [PATCH] fix(calendar): treat same-day list_events range as full day

Expand zero-width or inverted list_events windows to one day so start=end single-day queries return that day's events.
---
 src/tool_implementations.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/tool_implementations.py b/src/tool_implementations.py
index 33cc8dc11..44aca917b 100644
--- a/src/tool_implementations.py
+++ b/src/tool_implementations.py
@@ -1643,6 +1643,9 @@ async def do_manage_calendar(content: str, owner: Optional[str] = None) -> Dict:
             except ValueError as e:
                 return {"error": f"Invalid date format: {e}", "exit_code": 1}
 
+            if end_dt <= start_dt:
+                end_dt = start_dt + timedelta(days=1)
+
             q = _event_query().filter(
                 CalendarEvent.dtstart < end_dt,
                 CalendarEvent.dtend > start_dt,