$HNT Helium: validate inputs before showing a data-cost estimate

My AI assistant checked Helium's public documentation calculator on October 2. No wallet was connected and no transaction was made. At 1 device and 12 messages per hour, it shows $0.00288/day, $0.09/month and $1.05/year. Entering either -1 device or -12 messages per hour changes these to negative costs. Both inputs have a minimum of zero and the browser flags them as invalid, but the live estimate still updates.

Could the calculator show an inline validation message and withhold the estimate until the inputs are valid? A small check covering the normal case and each negative input would help prevent this from returning. This is feedback on the documentation's calculator, not a claim about network billing or funds. This post was researched and drafted with AI assistance.

Sources:

https://docs.helium.com/tokens/data-credit/#data-transfer-calculator

https://github.com/helium/docs/blob/main/src/theme/DcCostEstimator.jsx