feat: integrate OneSignal for push notifications

[Antoni-Czaplicki]

No description provided.

[Copilot]

Pull request overview

This PR integrates OneSignal web push notifications into the Next.js app by adding a client-side initialization component, registering the required service worker, and wiring the init into the root layout.

Changes:

• Add a OneSignalInit client component that initializes OneSignal using NEXT_PUBLIC_ONESIGNAL_APP_ID.
• Render OneSignalInit from src/app/layout.tsx so it runs globally.
• Add public/OneSignalSDKWorker.js, react-onesignal dependency, and introduce .env.example (plus a small .gitignore update).

Reviewed changes

Copilot reviewed 5 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/components/one-signal-init.tsx	New client component to initialize OneSignal on mount.
src/app/layout.tsx	Mounts OneSignalInit in the root layout.
public/OneSignalSDKWorker.js	Adds OneSignal service worker loader via importScripts.
package.json	Adds react-onesignal dependency.
package-lock.json	Locks react-onesignal dependency version/resolution.
.gitignore	Ignores .idea/ and ensures .env.example remains tracked.
.env.example	Adds example env var placeholder for OneSignal App ID.

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[Copilot]

NEXT_PUBLIC_ONESIGNAL_APP_ID can be defined but empty (e.g., .env.example sets it to an empty value). In that case this code will still call OneSignal.init with an empty appId and then log an initialization failure. Treat empty/whitespace values as “not configured” and skip initialization (e.g., validate it’s a non-empty string) to avoid noisy errors/misleading behavior.

Suggested change

	const appId = process.env.NEXT_PUBLIC_ONESIGNAL_APP_ID;
	if (appId === undefined) {
	console.error("OneSignal app ID is not defined, skipping initialization");
	const rawAppId = process.env.NEXT_PUBLIC_ONESIGNAL_APP_ID;
	const appId = typeof rawAppId === "string" ? rawAppId.trim() : undefined;
	if (!appId) {
	console.error("OneSignal app ID is not defined or empty, skipping initialization");

[Copilot]

This example env file only includes NEXT_PUBLIC_ONESIGNAL_APP_ID, but the app also reads other env vars (e.g. FEEDBACK_FORM_URL, API_URL, JUWE_*_URL). To keep onboarding/docs accurate, include the full set of supported env vars here (or rename/scope this file if it’s intentionally OneSignal-only) and update the README section that currently instructs creating an .env with only FEEDBACK_FORM_URL.

Suggested change

	NEXT_PUBLIC_ONESIGNAL_APP_ID=
	# OneSignal configuration
	NEXT_PUBLIC_ONESIGNAL_APP_ID=
	# Feedback form configuration
	FEEDBACK_FORM_URL=
	# Backend API base URL
	API_URL=
	# JUWE-related service URLs
	# Add all JUWE_*_URL variables required by your deployment, for example:
	# JUWE_PORTAL_URL=
	# JUWE_ADMIN_URL=
	# JUWE_API_URL=