Advance the durable baseline to PR #132, remove the completed volatile lane,
and record the shared language pin, bounded modeline contract, Vterm Stage 2
landing, remaining deferrals, and current roadmap state.
Parse bounded Emacs and Vim modelines, normalize common aliases, and give
explicit file metadata precedence over inferred language. Pin one fresh-load
language decision for syntax, LSP, pairing, comments, and initial major mode,
while preserving the LSP path guard and explicit mode overrides.
Cover supported forms, rejection boundaries, precedence, unknown modes,
shebang and modeline pinning, reopen behavior, and pathless buffers.
Match Vim's real direct and set-form tokenization, reject nonexistent colon
assignments, clarify suffix scanning and trust, extend aliases, and pin the
shebang-edit regression in acceptance.
Define bounded Emacs and Vim modeline parsing, alias normalization,
explicit precedence, one pinned language decision shared by syntax and LSP,
and the acceptance contract for load-time mode detection.
Levi Neuwirth