v0.4.3

CLI (vastlint-cli)

• --vast-version <version> (check and fix) — override the VAST version used for validation, ignoring the version= attribute in the XML. Accepts 2.0, 3.0, 4.0, 4.1, 4.2, 4.3. Useful for enforcing a floor version across all incoming tags or testing how a tag scores against a target version.
• --ignore-pattern <regex> (check and fix) — replace all matches of the supplied regular expression with a valid HTTPS placeholder before validation. Designed for ad-server templating macros (${IMPRESSION_URL}, %%CACHEBUSTER%%) that would otherwise trigger URL-format errors on unresolved placeholders. The substitution is in-memory only — the original file is never modified.

vastlint-core

• ValidationContext gains forced_version: Option<VastVersion> — when Some, skips XML version detection entirely and uses the supplied value. Used by the CLI flags above; available to library consumers.
• VastVersion now derives Copy.

OTP port daemon

• vastlint daemon subcommand — speaks the Erlang {:packet, 4} binary framing protocol over stdin/stdout. Reads 4-byte big-endian length + raw UTF-8 VAST XML; writes 4-byte big-endian length + JSON validation result. Safe for production Elixir pipelines via NimblePool (each worker holds one persistent Port). Does not require the NIF.

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