Sync from umple-lsp@b0604a3 (grammar, v0.1.3)

[DraftTin]

Auto-sync from umple-lsp

Source: umple-lsp@b0604a32b0278151b9453074fe1ddec6de7b0934
Change type: grammar (grammar = grammar.js/parser.c, highlights = queries/**.scm)
Version bump: 0.1.2 → 0.1.3

Changed paths in umple-lsp

packages/tree-sitter-umple/grammar.js

Safe to merge?

• highlights only — safe to merge now.
• grammar or both — wait for an umple-lsp-server npm
  publish that includes matching server-side indexer support
  before merging, if the new syntax requires it. Check the
  latest published server with npm view umple-lsp-server version.
  If you merge early, editor highlighting may understand new
  syntax before the LSP does; users will see a temporary
  feature gap until npm catches up.

Next steps after merge

1. (Optional) publish umple-lsp-server to npm if the server
   changed alongside this grammar.
2. Cut a new marketplace release by updating the git submodule
   pointer and extensions.toml umple entry version in a fork
   of zed-industries/extensions, then opening a PR there.
   This stays manual by design (topic 040).

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Produced by .github/workflows/sync-umple-zed.yml in umple-lsp.
Re-runs on subsequent grammar / highlight pushes force-push onto
sync/umple-lsp-master to coalesce with this PR instead of stacking new ones.