feat(settings): add delete organization in danger zone

[rafavalls]

What is this contribution about?

Adds a Danger Zone section to the Organization General settings page with a button to permanently delete the current organization. Uses the existing authClient.organization.delete() Better Auth method, shows a confirmation dialog before proceeding, and redirects to / on success.

Screenshots/Demonstration

A "Danger Zone" section appears at the bottom of Settings → Organization → General, with a red-bordered card and a destructive Delete button that opens a confirmation dialog.

How to Test

1. Go to Settings → Organization → General
2. Scroll to the bottom — a "Danger Zone" section should be visible
3. Click Delete — a confirmation dialog should appear showing the org name
4. Confirm deletion — the organization is deleted and you are redirected to /

Migration Notes

No migrations required.

Review Checklist

• PR title is clear and descriptive
• Changes are tested and working
• Documentation is updated (if needed)
• No breaking changes

[github-actions]

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[github-actions]

Release Options

Suggested: Minor (2.294.0) — based on feat: prefix

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Reaction	Type	Next Version
👍	Prerelease	2.293.5-alpha.1
🎉	Patch	2.293.5
❤️	Minor	2.294.0
🚀	Major	3.0.0

Current version: 2.293.4

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