Extend transient/dynamic rating module: temperature profiles, longer durations, and soil diffusivity input

The current transient/dynamic rating module in ELEK has limited capability for long-term thermal analysis.

What is requested:

  1. Temperature profile visualization: Display temperature over time (conductor and surrounding media) during transient/dynamic rating calculations
  2. Extended duration support: Enable analysis over longer time periods (currently limited; extend to support durations up to ~1 year)
  3. Soil diffusivity parameter: Allow users to define or adjust soil thermal diffusivity as an input rather than relying on fixed assumptions (e.g., based on soil type or measured values)

Why this matters:

  • Transparency: Temperature profiles help users understand thermal behavior and validate results
  • Accuracy: Soil properties vary by location and moisture content; permitting diffusivity input improves calculation accuracy for site-specific conditions