v0.1.0

Added

• Initial extraction from ktav-lang/spec's
  scripts/build_spec/ — the engine that assembles spec.md and the
  repository's root documents (README, CHANGELOG, CONTRIBUTING,
  SECURITY) from per-section triple-translated source units, generalized
  behind configure({ langs, ... }) instead of a hardcoded language set.

• Content-unit tree assembly and validation (validateContentDir,
  buildBuffers): manifest/meta/body-part shape checking, a
  paragraph-boundary-aware split planner that keeps part k the same
  fragment in every language, and a section-inventory lock that makes an
  added, removed or renumbered section a deliberate, printed act.

• Root-document assembly (buildRootDocs/writeRootDocs/checkRootDocs)
  for documents built from small per-topic units instead of one
  hand-maintained file per language. writeRootDocs writes each document
  directly, without the output-write journal or cross-file crash
  recovery; validate the result with checkRootDocs.

• Requires Node.js 24 or later.

• Journalled crash recovery for output writes (writeBuildOutputs):
  a journalled two-phase commit with backup/install/cleanup phases,
  applied sequentially one file at a time, and a cooperative
  cross-process lock with lease/incarnation/quarantine handling. After a
  process crash, recoverBuildOutputTransaction restores a consistent
  pre-write state or completes a durable commit; it is not an atomic
  snapshot for unrelated readers, and durability is limited by platform
  and storage flushing support. The journal format and lock protocol are
  carried over unchanged from ktav-lang/spec; the test suite kills a
  real writer process with SIGKILL at injected crash points and checks
  recovery.

• A docs registry (checkDocsRegistry/writeFrozenDocsLock): classifies
  every public Markdown output as generated (rebuilt and byte-checked),
  frozen (historical, pinned by a SHA-256 lock) or internal, so neither a
  stale frozen file nor a brand-new unregistered one goes unnoticed.

• Structural translation-parity checks (checkSources): part alignment
  across languages, list-item parity, indentation shape, and unwrapped
  (never re-flowed) paragraphs — checks written against real defects that
  reached a corpus while every rendered-document-level check still
  passed.

• A CommonMark-subset heading scanner (findHeadings) used to keep
  generated section headings out of unit bodies, correctly aware of
  fenced code, block quotes, lists and link reference definitions.