alex 5bd9eaf55d Options validation, CORS, HTTPS, HttpClient factory, config error output ...

- DnsmasqOptionsValidator: fail-fast at startup if MainConfigPath/HostsPath
  missing or files do not exist; clear stderr message before exit
- Program: AddOptions + ValidateOnStart; catch OptionsValidationException,
  print prominent error and Environment.Exit(1)
- CORS: configurable via Cors:Enabled, Cors:PolicyName, AllowedOrigins, etc.
  (appsettings + env); default disabled
- HTTPS: ForwardedHeaders (when enabled) and Https:UseRedirectAndHsts
  (appsettings + env); default disabled
- HttpClient: IHttpClientFactory + SameHostBaseAddressHandler for same-host
  API calls; default client uses Options.DefaultName
- publish-self-contained.sh: platform auto-detect, clean before publish,
  --no-clean option, RIDs including ubuntu.*-x64/arm64, linux-musl-*
- prepare-test-mount.sh: stop/tidy options
- EnsureManagedConfigHostedService / DnsmasqConfigSetService: managed
  config path and conf-file= handling
- appsettings: ForwardedHeaders, Https, Cors sections; Dnsmasq defaults

Note: Dockerfile.dnsmasq removed (may need restore for app+dnsmasq image)

2026-01-31 22:30:18 +10:00

..

entrypoint.sh

Refactor parsers to Superpower; config set; EnsureManagedConfig; options doc

2026-01-31 19:28:10 +10:00

prepare-test-mount.sh

Options validation, CORS, HTTPS, HttpClient factory, config error output

2026-01-31 22:30:18 +10:00

publish-self-contained.sh

Options validation, CORS, HTTPS, HttpClient factory, config error output

2026-01-31 22:30:18 +10:00