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feat: expand chat attachment processing

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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.
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Bohdan Triapitsyn
2026-07-22 11:54:03 +03:00
parent 55013ecb25
commit a68443c559
5 changed files with 479 additions and 150 deletions
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packages/ui/src/sync/DOCUMENTATION.md
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@@ -47,11 +47,12 @@ So:
| `session-ui-store.ts` | Session selection, draft lifecycle, abort prompts, worktree metadata, SDK-facing action entrypoints | App UI state |
| `useGlobalSessionsStore.ts` | Global active sessions, global archived sessions, `sessionsByDirectory` | All opened project/worktree session lists |
| `viewport-store.ts` | Scroll anchors, session memory, loading indicators | App UI state |
| `attachment-files.ts` | Attachment picker allowlists, MIME/content validation, structured-text sanitization, and HEIC conversion | Local chat attachments across shared UI runtimes |
| `input-store.ts` | Draft input state, attached files, synthetic parts | App UI state |
| `selection-store.ts` | Model/agent/variant selections | App UI state |
| `voice-store.ts` | Voice state | App UI state |
Local chat attachments are normalized before entering `input-store.ts`. PNG, JPEG, GIF, WebP, and PDF retain their media type; recognized text/code formats and unknown files whose first 4 KB are text are sent as `text/plain`; binary files outside the supported media types are rejected. Browser and VS Code pickers expose the same OpenCode-compatible extension allowlist, while drag-and-drop may still accept an unknown extension after content inspection.
Local chat attachments are normalized by `attachment-files.ts` before entering `input-store.ts`. PNG, JPEG, GIF, WebP, and PDF retain their media type; HEIC/HEIF is converted to JPEG; recognized text/code formats and unknown files whose first 4 KB are text are sent as `text/plain`; binary files outside the supported media types are rejected. Jupyter notebooks become readable markdown with non-text outputs omitted. HAR credentials, cookies, and sensitive URL parameters are redacted, while request/response body text is omitted. SVG and Draw.io files are attached as source text, not executable/rendered content. Browser and VS Code pickers expose the same allowlist, while drag-and-drop may still accept an unknown extension after content inspection.
## Session list rules