Add an EPEA field sheet calculator

[planttalks]

Summary

Users open the field sheet at http://127.0.0.1:43119.

Start it from the repository:

python field-sheet/serve.py

That address is now the first link in the README. It is also in the package metadata, the demo script, the sample CSV and the sheet footer.

The page scores six EPI-style tiers, docking binding energy and cost per kg with the same formulas as epea.core. Records stay in the browser.

Worked example ranked on the EPEA field sheet

Tests

• node --test field-sheet/calc.test.mjs
• pytest, including a check that the served page contains http://127.0.0.1:43119 and that the browser scores match Python
• Clicked through the worked example, the clear ranking, save, journal, limits, CSV import and a phone-width layout

_{To show artifacts inline, enable in settings.}