Show HN: Capture context. Give your agent the full picture

Context Brief is an Open Source macOS menu bar app that captures high-signal context from the app you’re in (GitHub, Jira, Slack, Notion, web pages, and more) with ⌃⌘C, then pastes one clean, agent-ready brief with ⌃⌘V. Unlike copy-paste tools, it extracts beyond visible content, densifies noisy text, combines multiple snapshots into one task context, and keeps a local context library on-device.