Add OG social card + drop the star-slide countdown

Reframe 'what if' slide

Darken light-mode borders

Darken light-mode secondary text

Reward-hacking cold open + divider cross-out + loop arrows

Fix star-repo overflow; remove spoiler

Fix curves overflow; reorder demo QR

Remove title rule; move quote

Closing quote + example-envs cleanup

Add quote segue

Add reward-hacking ex2 + hands-on demo

Mobile: default arrows + swipe

Deploy RL Environments 101 slides

initial commit