My goal is to launch a complete presale platform on Solana that takes a user from landing page to successful token purchase in a single, seamless flow. The scope covers every layer of the stack—smart contract, backend, and front-end—so I can go live without piecing different vendors together. Core requirements The centerpiece is a token-sale dashboard that connects instantly to Solana wallets (Phantom, Solflare, Backpack, etc.). Once connected, a user should see the presale details, enter the amount they wish to buy, sign the transaction, and receive immediate on-chain confirmation. What needs to be built • Solana program (Rust + Anchor preferred) handling the presale logic, supply caps, vesting or cliff options, and automatic treasury routing. • A responsive React/Next.js front-end that pulls live on-chain data, guides the buyer through each step, and confirms the purchase. • Node.js (or equivalent) backend with simple APIs to manage sale parameters and store mirrored data for the dashboard. Future-proofing User registration, admin panel, price charts, or detailed purchase history are not needed for the first release, but the architecture should leave room for these to be added later without major refactors. Acceptance criteria • End-to-end purchase flow works on devnet and mainnet. • Wallet integration completes in a single signature. • All contract methods are unit-tested and audited by me before deployment. • Front-end is mobile-friendly and deploys cleanly to Vercel or Netlify. Deliverables are the audited Solana program, front-end source with build instructions, backend code with environment sample, and a brief deployment guide. Once everything passes on devnet, we switch configs to mainnet and go live.