Authoring AI instruction surfaces - SKILL.md, agent definitions, CLAUDE.md policies, and subagent briefs. Use when writing or editing any file that instructs an AI.
Interact with a live webpage inside a browser window — fill forms, click buttons, navigate authenticated apps, automate Electron apps, test web UI, capture browser-window screenshots for visual verification of web pages. Do NOT use for fetching or reading web content programmatically (use curl or MCP fetch). Do NOT use for desktop screenshots, system media/audio control, MPRIS players, or non-browser GUI — those belong to the desktop skill.
Drive herdr, the terminal workspace manager, and orchestrate Claude Code agents in it: spawn, prompt, read, wait on, or take over a background Claude. Also scripts herdr workspaces, tabs, and panes.
Code review, compliance checking, documentation standards, instruction-file audits, and output compression. Use when reviewing code, checking conventions, writing docs, auditing skill or CLAUDE.md edits, or when output needs to be more concise.
Manage the chise media stack: create and manage Jellyfin friend accounts, and check Jellyseerr request and download status. Use for friends, media requests, or Jellyfin users.
Log into and scrape data from Lucas's B3 Área do Investidor (investidor.b3.com.br) via the PinchTab browser-automation CLI plus raw CDP XHR capture. Use when syncing portfolio positions, trades, dividends, or any other read-only data from B3 — for example when Golden runs b3-sync, or when verifying brokerage state. Documents the working flow, the SPA quirks that broke prior attempts, the API endpoint catalog, and the institution-CNPJ filter trick.
Nix everything — language expertise (lazy eval, derivations, overlays, module system, flakes, agenix, cachix), applying config via rebuild, devenv project shells, THIS dotfiles repo conventions (module layout, isNixOS, script packaging, secrets, channels), and Docker/Podman container management via the docker-manager script. Use for any .nix edit, rebuild, devenv shell, container lifecycle, or "where does this belong in the dotfiles" question.
Master index and discovery entry point for Lucas's personal skills and channels. Run the listing script to enumerate every personal skill and chapter on demand. Use when work touches a personal tool or platform, or the user names a topic this index covers.