From 218dd4376492a0897c2fded7831293f92bd00f28 Mon Sep 17 00:00:00 2001
From: timmy <timmy@stackchain.ai>
Date: Fri, 21 Aug 2026 07:29:23 +0000
Subject: [PATCH] feat: update repeated Week Ahead calendar exports (Closes
 #1214)

---
 frontend/week-calendar.js   |  2 +-
 tests/test_week_calendar.py | 29 ++++++++++++++++++++++++++++-
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/frontend/week-calendar.js b/frontend/week-calendar.js
index e06955c..a14a6c4 100644
--- a/frontend/week-calendar.js
+++ b/frontend/week-calendar.js
@@ -52,7 +52,7 @@
     const lines=['BEGIN:VCALENDAR','VERSION:2.0','PRODID:-//Stackchain//Week Ahead//EN','CALSCALE:GREGORIAN','METHOD:PUBLISH','X-WR-CALNAME:Stackchain Week Ahead',`X-WR-TIMEZONE:${timezone}`,'BEGIN:VTIMEZONE',`TZID:${timezone}`,'END:VTIMEZONE'];
     (blocks||[]).forEach(block=>{
       const day=compact(block.plan_date),reference=block.repository+(block.number!=null?' #'+block.number:'');
-      lines.push('BEGIN:VEVENT',`UID:week-${revision}-${day}-${stableId(block.id)}@stackchain`,`DTSTAMP:${stamp}`,
+      lines.push('BEGIN:VEVENT',`UID:week-${stableId(block.id)}@stackchain`,`SEQUENCE:${Math.max(0,Math.floor(Number(revision)||0))}`,`DTSTAMP:${stamp}`,
         `DTSTART;TZID=${timezone}:${day}T${compact(block.start_time)}00`,`DTEND;TZID=${timezone}:${day}T${compact(block.end_time)}00`,
         `SUMMARY:${escapeText(block.title||'Untitled work')}`,`DESCRIPTION:${escapeText(reference+' · Stackchain Week Ahead')}`,
         `URL:${String(block.url||'')}`,'TRANSP:OPAQUE','END:VEVENT');
diff --git a/tests/test_week_calendar.py b/tests/test_week_calendar.py
index c76c9cf..5932888 100644
--- a/tests/test_week_calendar.py
+++ b/tests/test_week_calendar.py
@@ -63,12 +63,39 @@ console.log(JSON.stringify({{blocks,text}}));
     assert "DTSTART;TZID=America/New_York:20260821T094500" in text
     assert "DTEND;TZID=America/New_York:20260821T101500" in text
     assert "TRANSP:OPAQUE" in text
-    assert "UID:week-7-20260821-issue-stackchain-dashboard-12@stackchain" in text
+    assert "UID:week-issue-stackchain-dashboard-12@stackchain" in text
+    assert "SEQUENCE:7" in text
     assert "SUMMARY:Plan\\, ship\\; verify" in text
     unfolded = text.replace("\r\n ", "")
     assert "URL:https://forge.alexanderwhitestone.com/git/stackchain/stackchain-dashboard/issues/12" in unfolded
 
 
+def test_week_calendar_reexports_update_stable_distinct_work_events():
+    source = f"""
+const calendar=require({json.dumps(str(WEEK_CALENDAR))});
+const issue={{id:'issue:stackchain/dashboard:12:',title:'Ship it',repository:'stackchain/dashboard',number:12,
+  plan_date:'2026-08-21',start_time:'09:00',end_time:'09:30'}};
+const moved={{...issue,plan_date:'2026-08-22',start_time:'14:00',end_time:'14:30'}};
+const pull={{...moved,id:'pull:stackchain/dashboard:12:'}};
+const first=calendar.serializeWeekCalendar([issue],{{timezone:'UTC',revision:7,generatedAt:'20260820T120000Z'}});
+const second=calendar.serializeWeekCalendar([moved,pull],{{timezone:'UTC',revision:8,generatedAt:'20260821T120000Z'}});
+const events=text=>text.split('BEGIN:VEVENT').slice(1).map(value=>({{
+  uid:value.match(/UID:([^\\r]+)/)[1],sequence:Number(value.match(/SEQUENCE:(\\d+)/)[1])
+}}));
+console.log(JSON.stringify({{first:events(first),second:events(second)}}));
+"""
+
+    result = run_node(source)
+    assert result["first"] == [{
+        "uid": "week-issue-stackchain-dashboard-12@stackchain",
+        "sequence": 7,
+    }]
+    assert result["second"] == [
+        {"uid": "week-issue-stackchain-dashboard-12@stackchain", "sequence": 8},
+        {"uid": "week-pull-stackchain-dashboard-12@stackchain", "sequence": 8},
+    ]
+
+
 def test_week_calendar_places_whole_tasks_in_imported_free_windows_and_reports_unfitted_work():
     source = f"""
 const calendar=require({json.dumps(str(WEEK_CALENDAR))});
-- 
2.43.0