build(deps-dev): bump unstructured from 0.18.14 to 0.25.2 in /backend

[dependabot]

Bumps unstructured from 0.18.14 to 0.25.2.

Release notes

Sourced from unstructured's releases.

0.25.2

What's Changed

• Terminology update: Platform -> Pipelines in README by @​Paul-Cornell in Unstructured-IO/unstructured#4404
• perf(html): use indexed parent lookup by @​KRRT7 in Unstructured-IO/unstructured#4417
• feat: add lazy chunking entry points by @​badGarnet in Unstructured-IO/unstructured#4423

New Contributors

• @​Paul-Cornell made their first contribution in Unstructured-IO/unstructured#4404

Full Changelog: Unstructured-IO/unstructured@0.25.0...0.25.2

0.25.0

Enhancements

• Partition arbitrary JSON and NDJSON: partition_json() and partition_ndjson() now handle any valid JSON/NDJSON payload, not just serialized Unstructured output. Arrays (and NDJSON files) of serialized elements keep rehydrating as before; any other valid payload (bare objects, arrays of records, NDJSON lines, scalars) becomes Text elements containing the pretty-printed JSON instead of raising. The schema pre-gates in partition() are removed accordingly, a compact single-line JSON object now detects as FileType.JSON rather than NDJSON (JSON/NDJSON disambiguation examines at most the first 1 MiB of the file), and malformed input still raises ValueError (empty or whitespace-only documents yield no elements). One degraded case: NDJSON whose first record alone exceeds the 1 MiB disambiguation bound now classifies as JSON and fails partition() with ValueError (calling partition_ndjson() directly still handles it). Rehydration is chosen by an explicit shape predicate, with these consequences: an element-shaped payload whose contents cannot be rehydrated (e.g. corrupt metadata) raises ValueError with the underlying error chained, and an array (or NDJSON file) mixing element-shaped and arbitrary items partitions whole as arbitrary JSON - no partial rehydration that silently drops the arbitrary items. An empty JSON object yields one Text containing {} (an empty array yields no elements). One intended routing note: a one-record serialized-element file (a single object, not an array) routed through partition()/detect_filetype() now emits pretty-printed Text with alphabetized keys instead of rehydrating, since rehydration applies only to arrays (direct partition_ndjson() behavior is unchanged).
• Serialized TableChunk elements now rehydrate: elements_from_dicts() (and with it partition_json() and partition_ndjson()) previously dropped serialized TableChunk elements silently because the type is not in the shared element-type map; it is now special-cased like CheckBox. This completes the table-reconstruction feature (#4291), whose reconstruct_table_from_chunks() expects deserialized chunks and now has a deserialization path to feed it. Behavior change: payloads of serialized chunked output containing split tables now return the TableChunk elements (previously omitted from results).
• is_json_processable() and is_ndjson_processable() are deprecated: partitioning and file-type detection no longer route through these prefix-sniffing helpers. They keep working unchanged for downstream callers - now emitting a DeprecationWarning - and will be removed in a future release.

0.24.1

What's Changed

• fix: sanitize v2 HTML output to prevent stored XSS (GHSA-v5mq-3xhg-98m9) by @​badGarnet in Unstructured-IO/unstructured#4394

Full Changelog: Unstructured-IO/unstructured@0.24.0...0.24.1

0.24.0

What's Changed

• feat: derive category_depth from heading level in the v2 (ontology) HTML parser by @​qued in Unstructured-IO/unstructured#4360
• fix(ci): stabilize partition benchmark with a rolling-median baseline by @​qued in Unstructured-IO/unstructured#4375
• refactor: centralize URL fetching with host validation and default timeouts by @​william-u10d in Unstructured-IO/unstructured#4388

New Contributors

• @​william-u10d made their first contribution in Unstructured-IO/unstructured#4388

Full Changelog: Unstructured-IO/unstructured@0.23.1...0.24.0

0.23.1

What's Changed

• feat: extract filled AcroForm field text in PDF partitioning by @​badGarnet in Unstructured-IO/unstructured#4372

Full Changelog: Unstructured-IO/unstructured@0.23.0...0.23.1

0.23.0

What's Changed

• fix: stop decimating embedded text on dense PDF pages by @​badGarnet in Unstructured-IO/unstructured#4368
• fix: keep extracted text aligned with rotated PDF page images in hi_res by @​badGarnet in Unstructured-IO/unstructured#4367
• feat: add enrichment origins metadata field by @​badGarnet in Unstructured-IO/unstructured#4370

... (truncated)

Changelog

Sourced from unstructured's changelog.

0.25.2

Enhancements

• Speed up HTML element hierarchy reconstruction: elements_to_html() now indexes elements by ID before attaching children, avoiding repeated linear parent scans.

• Add lazy chunking entry points: iter_chunk_elements() and iter_chunks_by_title() yield each chunk as it is formed, alongside the list-returning chunk_elements() and chunk_by_title(), which are now defined in terms of them. Same options, same chunks, same order — chunking was already lazy internally and this exposes that pipeline rather than adding a second one. Chunks are no longer accumulated in a list, so a caller that also reads elements lazily holds only the pre-chunk being formed; see the docstrings for two limits on that — iter_chunks_by_title() reads one pre-chunk ahead in order to combine undersized ones, and the default include_orig_elements=True retains source elements (image_base64 payloads included) in every chunk. Options are validated at the call rather than on first advance, and an unknown tokenizer used with max_tokens now raises there too, in both forms.

Fixes

• Reject an empty tokenizer when chunking by max_tokens: "" is not None, so it slipped past the "tokenizer is required" check while still leaving the chunkers without a token counter — the window was then silently measured in characters, making max_tokens=20 mean 20 characters. It now raises the same ValueError as omitting tokenizer altogether.

0.25.1

Fixes

• Update README.md: readme-only changes; added a link to Unstructured Pipelines to the README. No library behavior changes.

0.25.0

Enhancements

• Partition arbitrary JSON and NDJSON: partition_json() and partition_ndjson() now handle any valid JSON/NDJSON payload, not just serialized Unstructured output. Arrays (and NDJSON files) of serialized elements keep rehydrating as before; any other valid payload (bare objects, arrays of records, NDJSON lines, scalars) becomes Text elements containing the pretty-printed JSON instead of raising. The schema pre-gates in partition() are removed accordingly, a compact single-line JSON object now detects as FileType.JSON rather than NDJSON (JSON/NDJSON disambiguation examines at most the first 1 MiB of the file), and malformed input still raises ValueError (empty or whitespace-only documents yield no elements). One degraded case: NDJSON whose first record alone exceeds the 1 MiB disambiguation bound now classifies as JSON and fails partition() with ValueError (calling partition_ndjson() directly still handles it). Rehydration is chosen by an explicit shape predicate, with these consequences: an element-shaped payload whose contents cannot be rehydrated (e.g. corrupt metadata) raises ValueError with the underlying error chained, and an array (or NDJSON file) mixing element-shaped and arbitrary items partitions whole as arbitrary JSON - no partial rehydration that silently drops the arbitrary items. An empty JSON object yields one Text containing {} (an empty array yields no elements). One intended routing note: a one-record serialized-element file (a single object, not an array) routed through partition()/detect_filetype() now emits pretty-printed Text with alphabetized keys instead of rehydrating, since rehydration applies only to arrays (direct partition_ndjson() behavior is unchanged).
• Serialized TableChunk elements now rehydrate: elements_from_dicts() (and with it partition_json() and partition_ndjson()) previously dropped serialized TableChunk elements silently because the type is not in the shared element-type map; it is now special-cased like CheckBox. This completes the table-reconstruction feature (#4291), whose reconstruct_table_from_chunks() expects deserialized chunks and now has a deserialization path to feed it. Behavior change: payloads of serialized chunked output containing split tables now return the TableChunk elements (previously omitted from results).
• is_json_processable() and is_ndjson_processable() are deprecated: partitioning and file-type detection no longer route through these prefix-sniffing helpers. They keep working unchanged for downstream callers - now emitting a DeprecationWarning - and will be removed in a future release.

0.24.2

Fixes

• Update README.md: readme-only changes; added the Unstructured Transform MCP to the README. No library behavior changes.

0.24.1

Fixes

• Fix stored XSS in v2 (ontology) HTML output (GHSA-v5mq-3xhg-98m9): partition_html(html_parser_version="v2"), elements_to_html(), and metadata.text_as_html previously emitted untrusted document markup without output encoding, allowing attacker-controlled content (on* handlers, javascript: links, tag/attribute breakout) to execute when the HTML was viewed. Output is now sanitized — text and attribute values are HTML-escaped, event-handler attributes are dropped, tags/attributes are allowlisted, and URL schemes are filtered (http/https/mailto/tel/relative preserved; data: limited to raster image MIME types on img[src]). Legitimate formatting is unaffected.

0.24.0

Enhancements

• Centralize outbound URL fetching: partition, partition_html, and partition_md now route url= fetches through a single shared helper (unstructured/safe_http.py) instead of ad-hoc requests.get calls. The helper applies an http/https scheme allowlist, a hostname denylist with IDNA normalization, address validation performed at connect time, manual redirect handling with per-hop re-validation (dropping credential material on cross-origin hops), refusal of proxied requests, and a default (connect, read) timeout. Behavior change: fetches that resolve to non-routable, loopback, or link-local addresses are now rejected by default. Set UNSTRUCTURED_ALLOW_PRIVATE_URL=1 (or pass allow_private=True) to opt out for controlled local usage.

0.23.3

Fixes

• Stabilize the partition-runtime benchmark CI check: the gate compared each run against a single all-time-minimum runtime, which a one-off fast runner could poison into an unbeatable floor (a frozen ~81s baseline vs a real ~130s fleet), failing every PR. It now compares against a rolling median of recent main runs with a warm-up period, so runner-speed variance can't block unrelated PRs. CI/tooling only; no library behavior changes.

... (truncated)

Commits

• 4c61d87 feat: add lazy chunking entry points (#4423)
• 441b9d6 perf(html): use indexed parent lookup (#4417)
• d309caf Terminology update: Platform -> Pipelines in README (#4404)
• c38745b feat: partition arbitrary valid JSON and NDJSON files (#4391)
• 8447a52 Update README.md (#4393)
• cda16b3 fix: sanitize v2 HTML output to prevent stored XSS (GHSA-v5mq-3xhg-98m9) (#4394)
• 445c957 refactor: centralize URL fetching with host validation and default timeouts (...
• f6eea75 fix(ci): stabilize partition benchmark with a rolling-median baseline (#4375)
• 37635f7 feat: derive category_depth from heading level in the v2 (ontology) HTML pars...
• 5ead69a feat: extract filled AcroForm field text in PDF partitioning (#4372)
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