chore: release v0.21.1

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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

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",

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",

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);
+    `,
+  },
 ];
 
 /**