Function hostMatchesPattern

hostMatchesPattern(host: string, pattern: string): boolean
True when host matches pattern:
- Exact: pattern === host.
- Single-label *.tld: matches one extra label (case-sensitive). Only fires when the tail is a literal — *.api-*.tld is a generic glob, not a single-label match.
- Generic glob: * becomes .* (crosses dots intentionally — only the single-label branch enforces label boundaries).
Case-sensitive — lowercase both inputs for case-insensitive match.
Parameters
- host: string
- pattern: string
Returns boolean
Example
```
hostMatchesPattern("foo.example.com", "*.example.com")     // true
hostMatchesPattern("a.b.example.com", "*.example.com")     // false
hostMatchesPattern("api-a.b.example.com", "api-*.example.com") // true (glob crosses dots)
```
- Defined in src/caddy/host-match.ts:23