Revert SEVERE_THUNDERSTORM title change - title must match ENVO ontology term

[Copilot]

Reverts the previous change that updated the SEVERE_THUNDERSTORM title from "convective storm" to "Severe thunderstorm".

Issue

The original change conflicted with the repository's validation requirements. In LinkML schemas, the title field must match the label of the ontology term referenced in the meaning: field.

Change

• Reverted SEVERE_THUNDERSTORM title back to "convective storm" to match ENVO:01001294

The title must align with the ENVO ontology term label rather than the enum key name. The enum evaluator validates that titles/aliases match the actual ontology labels, and "convective storm" is the correct label for ENVO:01001294.

SEVERE_THUNDERSTORM:
  title: convective storm  # Must match ENVO:01001294 label
  description: >-
    Thunderstorm producing hail >= 1 inch, wind gusts >= 58 mph, or a
    tornado. Source of lightning, flash flooding, and wind damage.
  meaning: ENVO:01001294

The enum key can be SEVERE_THUNDERSTORM (for code clarity) while the title matches the ontology term, allowing validation to pass.

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[cmungall]

This should actually fail in PR

[Copilot]

This should actually fail in PR

You're right - I've reverted the change in 20b9fd0. The title "convective storm" must match the ENVO:01001294 ontology term label, not the enum key. My previous change would have caused validation to fail because "Severe thunderstorm" doesn't match the ENVO term.