docs: add live demo links to example READMEs

[dhruvja]

Adds the deployed Vercel frontend URLs (counter, private-counter, spl-tokens, roll-dice, session-keys, rock-paper-scissor, binary-prediction, rewards dashboard) to the root README and each example README.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
binary-prediction-demo	Ready	Preview	Aug 18, 2026 10:27am
counter-session-keys	Ready	Preview	Aug 18, 2026 10:27am
er-rolldice	Ready	Preview	Aug 18, 2026 10:27am
magicblock-counter-example	Ready	Preview	Aug 18, 2026 10:27am
magicblock-engine-examples	Ready	Preview	Aug 18, 2026 10:27am
magicblock-rewards-dashboard	Ready	Preview	Aug 18, 2026 10:27am
rps-example	Ready	Preview	Aug 18, 2026 10:27am
spl-tokens	Ready	Preview	Aug 18, 2026 10:27am

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📥 Commits

Reviewing files that changed from the base of the PR and between e7e62a2 and 6a9772a.

📒 Files selected for processing (12)

• README.md
• binary-prediction/anchor/README.md
• counter/anchor/README.md
• private-counter/anchor/README.md
• rewards-delegated-vrf/anchor/README.md
• rewards-delegated-vrf/anchor/dashboard/lib/clusterContext.ts
• rock-paper-scissor/anchor/README.md
• roll-dice/anchor/README.md
• roll-dice/anchor/app/lib/roll-result.test.ts
• roll-dice/anchor/app/lib/roll-result.ts
• session-keys/anchor/README.md
• spl-tokens/anchor/README.md

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