Compare normalized attachment MIME types with the selected model's declared input modalities and show a non-blocking warning for incompatible files.
Recheck newly added attachments, restored drafts, async metadata, and existing files after model changes while avoiding warnings when capability metadata is unavailable. Summarize affected filenames and localize the warning across every supported locale.
Add focused modality compatibility coverage, document the composer behavior, and keep model metadata subscriptions stable to prevent startup render loops.
Users can now attach Microsoft Office documents (.docx, .pptx, and .xlsx) and OpenDocument files (.odt, .odp, and .ods) from the shared web, desktop, mobile, and VS Code chat surfaces.
Document text is extracted locally and sent as a text/plain file part with the original filename, keeping the visible user message clean. Supported embedded PNG, JPEG, GIF, and WebP images are sent as separate image parts, with matching [filename] citations preserved near their source paragraph, slide object, spreadsheet cell anchor, or OpenDocument position. Presentation notes, spreadsheet values, headers, and footers are included where available.
Document expansion is metadata-validated and bounded against oversized entries, excessive uncompressed data, unsafe paths, invalid image signatures, attachment-name races, and dangling citations after truncation. Generated document parts are published to the composer atomically.
Add fflate for worker-backed ZIP extraction and narrowly allow blob workers in the VS Code webview CSP without permitting blob scripts. Include focused fixtures for every supported format, extraction limits, positional citations, collision recovery, atomic attachment state, and CSP behavior.
Add picker and MIME support for more source-code, diff, notebook, structured-log, SVG, and Draw.io formats.
Convert Jupyter notebooks into readable text while omitting binary outputs, and sanitize HAR credentials, cookies, sensitive query parameters, and request/response bodies before files enter chat state.
Convert HEIC and HEIF images to JPEG up front, centralize attachment preparation in a focused module, and cover the new validation and transformation behavior with regression tests.
Bohdan Triapitsyn