Add Algorand soft staking infrastructure by Polaris

[david49046]

Summary

Adding the Polaris Soft Staking Platform to the Algorand ecosystem.

• Repo: https://github.com/david49046/algorand-soft-staking
• Live: https://dao.polaris.city
• License: MIT

What it is

Open-source multi-pool soft staking infrastructure with Merkle proof reward distribution on Algorand. Features:

• Soft staking — tokens/NFTs stay in users' wallets (no locking or custodianship)
• Merkle proof claims — cryptographic reward verification via on-chain roots
• PyTeal smart contracts — fully auditable contract source
• Multiple pool types — token staking, NFT staking, LP staking, monthly rolling pools
• Supabase edge functions — stake management and proof generation

Note: This was previously submitted in PR #2788 but was closed because the repo was private. The repo is now public as requested.