feat: preinstall Playwright and Puppeteer browser system dependencies (issue #68)

[konard]

Summary

Fixes #68

This PR adds all OS-level system library dependencies required to run Chromium, Firefox, and WebKit browsers via Playwright and Puppeteer. It also globally installs the playwright and @puppeteer/browsers CLI tools.

Problem

When using npx playwright install inside a container based on konard/sandbox, browsers are downloaded but the host system is missing required OS libraries. Playwright emits:

╔══════════════════════════════════════════════════════╗
║ Host system is missing dependencies to run browsers. ║
║ Please install them with the following command:      ║
║                                                      ║
║     sudo npx playwright install-deps                 ║
║                                                      ║
║ Alternatively, use apt:                              ║
║     sudo apt-get install libatk1.0-0t64\             ║
║         libatk-bridge2.0-0t64\                       ║
║         libcups2t64\                                 ║
║         libxkbcommon0\                               ║
║         libatspi2.0-0t64\                            ║
║         libxdamage1\                                 ║
║         libasound2t64                                ║
╚══════════════════════════════════════════════════════╝

Observed in hive-mind CI: https://github.com/link-assistant/hive-mind/actions/runs/22902572178/job/66453518615

Root Cause

The sandbox-js base Dockerfile only installs minimal prerequisites (curl git sudo ca-certificates unzip). The ~60 system libraries needed by browser engines (GTK, CUPS, D-Bus, libXkbcommon, ALSA, GStreamer, ATK, etc.) were absent.

Solution

1. ubuntu/24.04/js/Dockerfile — Add the complete set of browser system dependencies as a new apt-get install layer. Since sandbox-js is the base for all images (sandbox-essentials, sandbox-full), all derived images inherit these deps automatically.

2. ubuntu/24.04/essentials-sandbox/install.sh — Add the same deps for standalone installs, and globally install playwright and @puppeteer/browsers CLIs via npm.

3. docs/case-studies/issue-68/CASE-STUDY.md — Deep root cause analysis with CI log data, official dependency sources, and solution rationale.

Packages Added

The complete union of Playwright (Chromium + Firefox + WebKit) and Puppeteer (Chrome) dependencies for Ubuntu 24.04:

• Chromium/Chrome: libasound2t64, libatk-bridge2.0-0t64, libatk1.0-0t64, libcups2t64, libgbm1, libnspr4, libnss3, libxkbcommon0, and more
• Firefox: libavcodec60, libgtk-3-0t64, libpangocairo-1.0-0, libxcursor1, etc.
• WebKit: gstreamer1.0-*, libenchant-2-2, libgtk-4-1, libgstreamer-*, libharfbuzz-*, etc.
• Display/Fonts: xvfb, fonts-liberation, fonts-noto-color-emoji, fonts-ipafont-gothic, etc.
• Puppeteer extra: libxss1, libxtst6, xdg-utils

CLIs Installed

• playwright — npx playwright install [chromium|firefox|webkit], npx playwright test
• @puppeteer/browsers — npx @puppeteer/browsers install chrome@stable

References

• Playwright nativeDeps.ts — official source for Ubuntu 24.04 deps
• Playwright: Install System Dependencies
• Puppeteer Troubleshooting
• Case Study

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[konard]

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[konard]

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[konard]

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💰 Cost estimation:

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[konard]

✅ Ready to merge

This pull request is now ready to be merged:

• All CI checks have passed
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• No pending changes

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