feat: Screenshot utility for visual asset capture

[madjin]

Summary

Add a screenshot utility that captures visuals from URLs found in daily facts files. These screenshots serve as reference material for poster generation and future video compositions.

Motivation

• Add visual entropy to AI-generated posters
• Create time-capsule snapshots of referenced content
• Build foundation for remotion.dev video pipeline

Proposed Solution

Smart URL Handling

• GitHub URLs → Fetch OpenGraph preview images (fast, no browser)
• Twitter/X URLs → Fetch card images or skip
• Other URLs → Full Playwright screenshot (1920x1080)

New Script

scripts/posters/utils/screenshot.py

# From facts file
python scripts/posters/utils/screenshot.py --from-facts the-council/facts/2025-12-21.json

# Single URL
python scripts/posters/utils/screenshot.py https://example.com -o screenshot.png

# Batch from URL list
python scripts/posters/utils/screenshot.py -f urls.txt -o screenshots/

Output Structure

posters/screenshots/2025-12-21/
├── github-elizaos-eliza-pull-6215.png
├── github-elizaos-eliza-issues-6235.png
└── manifest.json

Implementation Phases

1. Phase 1: Core screenshot utility with Playwright
2. Phase 2: Facts file URL extraction
3. Phase 3: Integration with illustrate.py batch mode

Dependencies

• playwright>=1.40.0

Future

• Screenshot sheet montage (like icon_sheet.py)
• Remotion.dev video compositions

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