Show HN: Skill for your agent to visualize your gbrain and Obsidian

Brain-map is a tool that converts folders of Markdown notes from Obsidian or gbrain into an interactive, self-contained HTML knowledge graph with force-directed visualization, timeline scrubbing, and filtering by theme and type. It requires only Python's standard library to run, works with AI agents like Claude and Cursor, and includes a pre-built demo with 992 fictional notes that requires no setup. The tool automatically colors nodes by theme, scales them by link count, and allows users to search, filter, and inspect individual notes and their connections.