Test invariants locally
Automated tests check the name, symbol, decimals, supply recipient, ordinary transfers, and the absence of privileged methods before a wallet signs anything.
Let the wallet own the signature
The owner-only deployment page requests the testnet, shows the connected address and fixed parameters, then asks the browser wallet to sign. The private key never enters this project.
Verify and read back
After deployment, publish the exact source and compiler settings on the explorer. Then read contract values through the RPC and compare them with the intended specification.