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Charis 071a07118a feat(studio): add NotebookPreview diff component (#49112 )

## Summary

Stacked on #49109 (PR 1 — `deriveNotebookDiff`). This is PR 3 of the
notebook approval-preview stack: a pure presentational component that
renders the cell-level diff for a proposed notebook create/update, for
use in the assistant approval UI (wired in a later PR).

- `NotebookPreview` — header summary (`"6 cells"` for create, `"+2 −1 ~1
↕1"` for update) + entry list + "Show N more cells" for long notebooks.
- `NotebookPreviewCell` — dispatches per entry tag:
`unchanged`/`removed`/`moved` collapse to a muted badge row; `added`
renders source via `CodeBlock` (with a max-height/expand toggle);
`replaced` renders a `DiffEditor` diff, plus a before → after metadata
line when only `database_identifier`/`time_range` changed (SQL/text
identical).
- `NotebookPreview.utils` — pure helpers (labels, source/metadata
extraction, language mapping, summary formatting), unit tested.
- **Safety property**: cell content only ever renders through
`CodeBlock`/`DiffEditor` (literal source), never through a markdown
renderer — agent-authored text can't trigger image loads or link
navigation before the user approves. Covered by an adversarial test
(`![x](evil)`, `[y](evil)`, `<img onerror>` → zero
`img`/`[href]`/`[src]` DOM nodes).
- Adds `'markdown'` as a supported `CodeBlock` language (small, additive
change to `packages/ui-patterns`).

Towards FE-4143

## Test plan

- [x] `pnpm --filter studio test` — NotebookPreview suite (21 tests)
passes
- [x] `pnpm --filter studio exec eslint
components/interfaces/Explorer/NotebookPreview` — clean
- [x] `pnpm --filter studio exec tsc --noEmit` — no new errors
- [x] `pnpm exec prettier --check` — clean

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
  * Added notebook previews showing create and update summaries.
* Displayed added, removed, moved, unchanged, and replaced cells with
metadata and source diffs.
* Added expandable previews with truncation and a “Show more cells”
option.
  * Added Markdown syntax highlighting to code blocks.

* **Bug Fixes**
* Safely render adversarial agent-authored Markdown as literal content.

* **Tests**
* Added comprehensive coverage for notebook previews, summaries,
metadata, formatting, and truncation.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

2026-08-18 11:44:23 -04:00

scripts

chore: UI theme cleanup (#47519 )

2026-07-02 17:03:08 +02:00

src

feat(studio): add NotebookPreview diff component (#49112 )

2026-08-18 11:44:23 -04:00

package.json

fix(docs): unify docs card hover and retire IconPanel (#48379 )

2026-07-31 06:34:05 +10:00

README.md

feat: Move some components into ui-patterns (#20774 )

2024-02-12 12:44:00 +01:00

tailwind.config.css

chore: Migrate the main Tailwind JS config to CSS (#45686 )

2026-05-13 13:14:58 +02:00

tsconfig.json

chore: Bump Typescript to v6 (#44204 )

2026-03-26 15:27:35 +01:00

vitest.config.ts

add coverage option to ui-patterns (#35669 )

2025-05-29 19:09:26 +02:00

vitest.setup.ts

chore: upgrade vite to v8 and vitest to v4 (#44833 )

2026-04-16 00:13:48 +09:00

README.md

Supabase UI Patterns

This package should be used for components which are built using NPM libraries (react-markdown, reactflow for example), which make no sense to be included in all apps. It should also be used for components which are constructed using various components from the ui package.

This package does not have a barrel file - each component has to be imported from its index (ui-patterns/PrivacySettings, for example). This is intentional so that adding a new component which is used only in 1 or 2 apps doesn't burden the rest of the apps.