Server management — update and delist

[funkiirabu]

Problem

After registering a server, there's no way for the owner to:

• Update the description or metadata
• Trigger a re-validation to pick up new endpoints
• Delist / remove their server

Solution

Add a server management flow, likely behind ownership verification (see #3).

Features

• Re-validate: Owner triggers a fresh @suimpp/discovery check to update endpoint data, categories, and description
• Edit metadata: Update name, description (fields not derived from OpenAPI)
• Delist: Mark server as inactive (soft delete, preserves payment history)
• Transfer: Change ownership (requires new ownership proof)

UX Options

1. Authenticated dashboard — server owners log in (wallet signature or API key)
2. Magic link — ownership proof at registration generates a management URL
3. CLI-based — npx @suimpp/discovery manage <url> with a signed challenge

Acceptance criteria

• Server owners can update their listing without re-registering
• Delisted servers no longer appear in /servers but payment history is preserved
• Endpoint data stays current as servers add/remove services

Context

Deferred from Phase 4 scope. Currently the only option is to ask an admin to update the database directly.