Multi-Environment Deployment Promoter (Testnet to Mainnet)

WHAT IT DOES Multi-Environment Deployment Promoter is a read-only developer tool that analyzes the readiness of testnet contract deployments for promotion to mainnet. It reads the testnet contract's bytecode and metadata, verifies deployment success, checks contract balance and bytecode size, validates the environment type, and generates a comprehensive readiness report. The tool provides a structured checklist with pass/fail/warn status for each readiness criterion, a promotion plan with estimated gas costs, and actionable recommendations for a successful mainnet deployment. It helps developers confidently promote their contracts from testnet to mainnet by catching issues early and providing clear guidance. HOW TO USE Connect your EVM-compatible wallet via the BGWallet bridge and select the network where your contract is deployed (testnet or mainnet). Enter the testnet contract address, the contract name, and optionally a mainnet RPC URL. Click "Simulate Promotion" to analyze the contract's readiness for mainnet deployment. Results include an overall readiness status (Ready/Not Ready), a checklist showing contract existence, funding, bytecode size, environment validation, contract name, and mainnet RPC configuration, a visual progress bar, and a detailed promotion plan with estimated gas and cost. The tool provides specific recommendations for fixing any failing or warning checks. All analysis is read-only—no signatures or transactions are submitted. TECHNICAL MECHANISM The tool uses ethers.js v5.7.2 to read chain state via the provider. It performs six readiness checks: (1) Contract existence—fetches bytecode via provider.getCode(address) and confirms it is non-empty; (2) Contract funding—retrieves the contract's balance via provider.getBalance(address) and reports it; (3) Bytecode size—calculates the bytecode length and flags contracts smaller than 100 bytes; (4) Environment validation—checks that the chain ID matches a recognized testnet (5, 11155111, 42, 4) and warns if not; (5) Contract name—validates that a name has been provided; (6) Mainnet RPC—checks that a mainnet RPC URL has been configured. Each check returns a pass, warn, or fail status with a detailed explanation. The overall readiness score is calculated as the percentage of passed checks, with thresholds: ≥80% = Ready,