🔗 Shortlinku

Tambahkan mapping di links.json, lalu akses: https://username.github.io/shortlinku/slug.

• /yt → YouTube
• /ig → Instagram
• /promo-september → URL promo

Emergency fallback: /go/<url-encoded> atau ?to=<url>.

Contoh: /go/https%3A%2F%2Fexample.com atau /?to=https://example.com