Fix Linkwarden 2.15.1 startup (#2892)

Replace the obsolete Yarn startup path with direct Linkwarden runtime commands, run the worker directly, and release add-on version 2.15.1.2 with backup guidance.

linkwarden/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.15.1.2 (2026-07-22)
+- **Potential breaking change:** Create a full Home Assistant backup before upgrading. This release changes the Linkwarden application startup and database migration invocation.
+- Fix startup after Linkwarden 2.15 changed its production container layout.
+- Replace the legacy Yarn-based startup with direct Prisma, web, and worker runtime commands.
 
 ## 2.15.1 (2026-07-22)
 - Update to latest version from linkwarden/linkwarden (changelog : https://github.com/linkwarden/linkwarden/releases)

linkwarden/config.yaml

@@ -45,5 +45,5 @@ schema:
   STORAGE_FOLDER: str?
 slug: linkwarden
 url: https://github.com/alexbelgium/hassio-addons/tree/master/linkwarden
-version: "2.15.1"
+version: "2.15.1.2"
 webui: "[PROTO:ssl]://[HOST]:[PORT:3000]"

linkwarden/rootfs/etc/cont-init.d/99-run.sh

@@ -86,4 +86,10 @@ fi
 ########################
 
 bashio::log.info "Starting app..."
-yarn prisma:deploy && yarn concurrently:start
+export PATH="/data_linkwarden/node_modules/.bin:${PATH}"
+
+prisma migrate deploy --schema="/data_linkwarden/packages/prisma/schema.prisma"
+
+exec concurrently -k -n web,worker \
+    "cd /data_linkwarden/apps/web && exec next start" \
+    "cd /data_linkwarden/apps/worker && exec tsx worker.ts"