The GitHub Actions job "Required Checks" on texera.git/gh-readonly-queue/main/pr-6945-8c7089b3fa247087c40817ca55c917505313c9f3 has failed. Run started by GitHub user mengw15 (triggered by mengw15).
Head commit for run: 61923c5e4f5699ea2c3a3681c072603bc2da6bbc / Ryan Zhang <[email protected]> feat(python-notebook-migration): make embedded jupyter notebook read-only (#6945) ### What changes were proposed in this PR? The notebook migration service generates a Jupyter notebook and embeds it in the Texera app as a reference view of the migrated workflow. It is meant for reading, not editing. This PR configures the embedded Jupyter container so the notebook renders as a clean, read-only view. Changes, all scoped to the notebook migration service container assets: 1. `custom.css` (new): hides the classic Notebook chrome (header with logo and logout, kernel and trust indicators, the File/Edit/View menu, and the toolbar), and fixes a second, non-functional scrollbar by making `#site` the single scroll container. 2. `Dockerfile`: copies `custom.css` into `/home/jovyan/.jupyter/custom/custom.css`, next to the existing `custom.js`. 3. `custom.js`: read-only hardening. Sets every code cell's CodeMirror editor to `readOnly: "nocursor"`, calls `keyboard_manager.disable()` so cells cannot be edited or executed, and overrides `MarkdownCell.prototype.unrender` so markdown cells stay rendered. The existing click-to-highlight postMessage integration is unchanged. This does not touch the Texera frontend or backend. ### UI Comparison Before this PR: <img width="787" height="684" alt="2026-07-27_13-38-52" src="https://github.com/user-attachments/assets/65cc08bd-ffcf-4343-b245-344830b6b59c"; /> After this PR: <img width="787" height="684" alt="image" src="https://github.com/user-attachments/assets/41440d7d-af4e-4212-993b-0c4b1a05ea2f"; /> ### Any related issues, documentation, discussions? Closes #6943 Parent issue #4301 ### How was this PR tested? Tested manually by building the container and opening the embedded notebook in the Texera app: 1. The classic Notebook chrome (header, menu, toolbar, kernel and trust indicators) is hidden; only the notebook cells are visible. 2. Clicking into a code cell does not put it in edit mode, typing does nothing, and cells cannot be run. 3. Double-clicking a markdown cell keeps it rendered instead of dropping into its editable source. 4. Only one working scrollbar is present. No automated tests were added: the change is static container assets (CSS and client-side JS in the classic Notebook UI) with no code path exercisable by the existing unit test suites. ### Was this PR authored or co-authored using generative AI tooling? Generated-by: Claude Code (Claude Opus 4.8) Report URL: https://github.com/apache/texera/actions/runs/30308883563 With regards, GitHub Actions via GitBox
