perl-lsp-feature-flags

Microcrate for LSP feature flag modeling used by protocol capability construction, runtime profile selection, and BDD/interoperability reporting.

Purpose

This crate owns the canonical shape and behavior of capability flags:

• BuildFlags — runtime/build-time capability toggles used by the protocol layer.
• AdvertisedFeatures — client-advertising projection of runtime capability flags.
• BuildFlags::to_advertised_features — projection from build flags to advertised features.
• BuildFlags::to_feature_ids — feature-id projection used by BDD tooling.
• BuildFlags::{production,ga_lock,all} — canonical feature profiles.

API

All API is intentionally small and stable:

• BuildFlags struct
• AdvertisedFeatures struct
• to_advertised_features and to_feature_ids
• production, ga_lock, and all profile constructors

Interoperability

• perl-lsp-protocol re-exports BuildFlags and AdvertisedFeatures, so existing import paths continue to work while still using this microcrate as the source of truth.
• perl-lsp-feature-policy uses this crate to translate profile decisions into concrete protocol capability flags.