v0.10.4-rc.1

Changed

• Release pipeline consolidation: WASM/npm publishing is now part of
  the canonical arthur-debert/release@v1.2.0 rust-cli workflow
  (opt-in via wasm-package input). Replaces the separate
  release-wasm.yml workflow that re-installed Rust and recompiled the
  workspace dep tree. One tag, one workflow run, one operator dashboard
  view — crates.io, GH release tarballs (incl. lex-wasm-wasm.tar.gz
  for direct-download consumers), Homebrew, and npm all ship from a
  single pipeline. (#510)
• lex-lsp-core is now part of the cargo publish list so its version
  ships to crates.io in lockstep with the rest of the workspace.