A lightweight browser tab garbage collector for Firefox and Zen Browser that intelligently unloads inactive tabs to reduce memory consumption.

Unlike simple timer-based tab discarders, Sweep uses a recency + frequency weighted scoring algorithm (`score = recencyWeight × recencyNorm + frequencyWeight × frequencyNorm`) to distinguish between cold tabs and active workflows.

Key Features:

• Unified scoring algorithm balancing access recency and frequency
• Protection rules for pinned, audible, active, and whitelisted tabs
• Minimal settings dashboard built with Svelte 5
• Automatic background sweep alarms and manual trigger support
• Native dark mode integration