Replace hand-crafted PowerPoint exports with Playwright-generated screenshots
taken from the actual running Docker test harness:
- scripts/take_screenshots.py: headless Chromium via Playwright; creates nodes
programmatically via LiteGraph/window.app, triggers updateNodeConfig() for
FormatString's dynamic socket update, then crops tightly around each node
- docs/assets/: four screenshots (fstring, jinja2, random, circuit_breaker)
replacing the old 1920×1080 PowerPoint exports (90%+ smaller, more accurate)
- Justfile: add `screenshots` recipe (starts harness if needed, waits healthy,
runs the script)
- README.md: rewrite to cover all three nodes including Circuit Breaker;
fix stale dependency list (was listing rich/colorama/termcolor which we
removed in spec 001); add ComfyUI Manager install path
- pyproject.toml + uv.lock: add playwright to [dev] dependencies
Run: just screenshots
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RWysE6jYn4YjNorLBQ1cXb
