Split V5 dashboard behavior into domain controllers and policies,
add agent token rotation/revocation, status reconciliation jobs,
ingress firewall syncing, and canvas connection APIs.
Add migrations for V5 status tracking, server capabilities, resource
connection aliases, and revoked agent tokens.
- Normalize hostnames to lowercase for RFC 1123 compliance while accepting uppercase input
- Expand NAME_PATTERN to allow parentheses, hash, comma, colon, and plus characters
- Add fallback to random name generation when application name doesn't meet minimum requirements
- Add comprehensive test coverage for validation patterns and edge cases