Firefox on Raspberry Pi: Performance, Setup, and Kiosk Mode

Practical guide to running Firefox on Raspberry Pi hardware — Pi 5 vs Pi 4 vs Pi 3 performance comparison, enabling hardware acceleration (VA-API), lightweight about:config tweaks, and setting up kiosk mode for dashboards. Pi 5 with 8GB is genuinely usable for daily browsing now. Pi 4 with 4GB works well for docs/reading. Also covers running in headless mode for automated screenshots.