fix alerts reconnect backoff and clipboard availability checks

.env.example

@@ -2,6 +2,7 @@
 # schema on each build, so the .sqlx cache is only needed for DB-less builds.
 # Run scripts/prepare_sqlx_sqlite.sh once first — it creates and migrates the DB.
 # Use an absolute path so builds work from any working directory.
+# Replace the placeholder below with the DATABASE_URL printed by the script.
 DATABASE_URL=sqlite:///absolute/path/to/wakey-prepare.sqlite3
 
 # Offline mode (CI / packaging): force the committed .sqlx cache.