From 41467a84b62b9381ba04744956385e1795c2dd1a Mon Sep 17 00:00:00 2001
From: Ulas Kalayci <ulas.kalayci@googlemail.com>
Date: Tue, 21 Apr 2026 14:03:33 +0200
Subject: [PATCH] chore: release v0.21.1

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 CHANGELOG.md      | 5 +++++
 package-lock.json | 4 ++--
 package.json      | 2 +-
 server/db.js      | 9 +++++++++
 4 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f13912..950f210 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.21.1] - 2026-04-21
+
+### Fixed
+- ICS calendar subscription sync no longer fails with "ON CONFLICT clause does not match any PRIMARY KEY or UNIQUE constraint". Migration 12 replaces the partial unique index on `(subscription_id, external_calendar_id)` with a full unique index, which SQLite's upsert conflict-target syntax requires.
+
 ## [0.21.0] - 2026-04-21
 
 ### Added
diff --git a/package-lock.json b/package-lock.json
index c837033..f287a80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "oikos",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "oikos",
-      "version": "0.21.0",
+      "version": "0.21.1",
       "license": "MIT",
       "dependencies": {
         "bcrypt": "^6.0.0",
diff --git a/package.json b/package.json
index 3b2629d..be73faf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "oikos",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "description": "Self-hosted family planner - calendar, tasks, shopping, meal planning, budget and more. Private, open-source, no subscription.",
   "main": "server/index.js",
   "type": "module",
diff --git a/server/db.js b/server/db.js
index 8a5d903..6c1a582 100644
--- a/server/db.js
+++ b/server/db.js
@@ -475,6 +475,15 @@ const MIGRATIONS = [
         WHERE subscription_id IS NOT NULL;
     `,
   },
+  {
+    version: 12,
+    description: 'calendar_events: partiellen Unique-Index durch vollständigen ersetzen (ON CONFLICT support)',
+    up: `
+      DROP INDEX IF EXISTS idx_calendar_sub_extid;
+      CREATE UNIQUE INDEX idx_calendar_sub_extid
+        ON calendar_events (subscription_id, external_calendar_id);
+    `,
+  },
 ];
 
 /**