Cloudshort 0.2.1

Fixed

• Reject whitespace inside destination URLs after trimming surrounding whitespace.
• Enforce the five-failure login limit for parallel requests and remove expired login attempts on each login.
• Prefer LINKS_KV, then worker-LINKS_KV, before other prefixed namespace names during setup.
• Ignore apps/*/wrangler.toml.bak config backups in Git.