v1.0.0-rc.33

Added

• Stable node ids on the document tree. DocumentNode.id is now populated with a
  deterministic, content-derived id (stable across extractions), and each chunk carries
  metadata.nodeIds linking it back to the nodes it was derived from. Both are exposed as plain
  strings across all language bindings. (#1296)
• Per-page chunk coordinates (pageSpans). Each chunk now carries metadata.pageSpans, a
  list of {page, bbox} entries — one per page the chunk overlaps, in page order — for viewer
  highlighting. The bounding box is the union of that page's body-layer node boxes within the
  chunk (omitted when unavailable). Empty (and omitted from the wire format) when page provenance
  is unavailable. (#1295)
• Stable table ids, headers, and opt-in anchors. Table gains tableId (a deterministic,
  reproducible id assigned in document order across the final emitted table set) and columns
  (the header row, so a fragment is interpretable on its own). A new table_anchors extraction
  option (default off) emits a [TABLE:{tableId}] marker before each rendered table so consumers
  can reconcile the markdown in content with the structured tables[] entries. (#1297)
• Configurable multi-label chunk classification. New ChunkClassificationConfig (label
  definitions, an LlmConfig, batch_size, max_concurrency), set via
  ExtractionConfig.chunk_classification, classifies each chunk with zero, one, or many labels via
  bounded-concurrency LLM batches and writes them to metadata.classifications
  ([{label, confidence?}]). Opt-in — absent config performs no classification and makes no LLM
  calls. The chunk-level analogue of page classification; requires the classification feature. (#1255)
• Automatic OCR of undecodable text layers. Pages whose embedded text decodes mostly into the
  Unicode Private Use Area, replacement, or control-character garbage (e.g. Identity-H fonts with no
  ToUnicode) are now routed to OCR like scanned pages, controlled by
  OcrQualityThresholds.min_undecodable_ratio (default 0.5) and gated by a 64-character floor so
  occasional symbols never trip it. (#1254)

Fixed

• Concatenated-PDF extraction audit. A cluster of structure/reading-order defects surfaced by an
  audit of concatenated legal PDFs: duplicate tables[] entries and double-counted table counts are
  deduplicated (#1288); fragmented per-row tables are stitched back into one table with a propagated
  header (#1290); bullet lists are no longer flattened into paragraphs or shredded into
  word-per-cell tables (#1301); spurious intra-word spaces in native text ("T ower") are removed
  via geometry-aware span joining (#1291); markdown escaping is consistent with an
  escape_markdown opt-out (#1292); OCR'd pages no longer report contradictory isBlank (#1293);
  chunk firstPage/lastPage provenance is restored on long PDFs (#1294); and heading context no
  longer leaks across document boundaries (#1289).
• Container users can enable page classification via a classification CLI feature carried into
  the all/container builds. (#1298)
• CLI batch resource limits and benchmark isolation. extract and batch now support
  --no-config-discovery, and their Tokio runtime honors --max-threads. The benchmark harness
  uses both controls, records batch subprocess overhead from the reported batch total, and keeps
  user configuration and verbose PDF logs from contaminating measurements.
• Linux glibc artifacts no longer require a newer glibc than they advertise. The prebuilt ONNX Runtime that was statically linked into the Python wheel and the Go/C FFI, Java, and Elixir artifacts is compiled against glibc ≥ 2.38 and pulled unversioned __isoc23_* and __libc_single_threaded symbols into the binary. Because the manylinux tag only reflects versioned glibc requirements, these installed everywhere but crashed at import/load on glibc 2.28–2.37 (undefined symbol: __isoc23_strtoll). They now link Microsoft's ONNX Runtime (glibc-clean, floors at 2.27) — the same runtime the C#, Node, and Docker builds already use — and ship it beside the binary, so the symbols are gone and the floor is honest. A CI check now fails any glibc artifact that references too-new symbols or omits the bundled runtime. musl, macOS, and Windows are unaffected.

Changed

• Dependencies refreshed across all languages. Rust, Python, Node, Ruby, Java, and Dart
  dependency versions were bumped to their latest compatible releases.