feat: add owner-only company deletion flow

[Lp-Francois]

What

• add a new authenticated deleteCompanyAction to delete companies only when owner_id matches the current user
• unlink related MCP listings before deletion by setting mcps.company_id to null
• add a DeleteCompanyButton with a native browser confirmation popup and success/error toasts
• show the delete button only for company owners in the company header

Why

Users can accidentally create multiple companies by clicking create several times. This adds a safe owner-managed way to clean up extra company records.

(see https://cursor.directory/companies)

Verification

• typecheck passes via /opt/homebrew/bin/bun run typecheck in apps/cursor

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Note

Medium Risk
Deletes company records and mutates related MCP associations; authorization is owner-scoped but destructive operations warrant careful review.

Overview
Adds an owner-only way to remove a company from the app: a destructive control on the company header (next to edit) that confirms via the browser, then runs a new authenticated server action.

The action loads the company, rejects non-owners, clears company_id on the owner’s related MCP rows (does not delete MCPs), deletes the company row, and revalidates /companies, the company slug route, and /. Success redirects to /companies with a toast; errors surface via toast.

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[vercel]

@Lp-Francois is attempting to deploy a commit to the Anysphere Team on Vercel.

A member of the Team first needs to authorize it.

[leerob]

#400 fixed the duplicate companies here