fix: resolve 15 critical and high severity bugs across CLI

[thibaultleouay]

Critical fixes:

• Fix region mapping collision causing silent data loss on round-trip (Koyeb/Railway regions now use disambiguated codes like koyeb_fra, railway_us-west2)
• Fix global koanf instance causing state pollution between ReadConfig/ReadOpenStatus calls
• Fix partial failure in ApplyChanges leaving lock map in inconsistent state
• Fix spinner leak when statusToSDK fails in status-report list/add-update
• Fix TCP monitor creation accepting zero/invalid port values

High severity fixes:

• Fix strconv.Atoi error silently ignored in httpMonitorToLocal/tcpMonitorToLocal
• Fix DNS monitor info returning opaque "unknown monitor type" error
• Fix ResolveToken silently discarding file read errors (e.g. permission denied)
• Fix confirmation prompt blocking in non-interactive environments (added TTY check)
• Fix delete commands showing confirmation with empty ID before validation
• Fix --component-ids "" silently clearing components on status-report update
• Fix monitor trigger printing plain text in --json mode
• Fix http.DefaultClient used without timeout (added api.DefaultHTTPClient with 30s)
• Fix unknown jobType aborting entire result set in run command
• Fix monitor import truncating output file before API call succeeds