nix

Manage NixOS infrastructure for this nix flake project. Deploy configurations with Colmena, troubleshoot services, and maintain servers. Use when: (1) Deploying NixOS configurations with colmena, (2) Troubleshooting server issues via SSH, (3) Checking service status across hosts, (4) Any infrastructure maintenance task. IMPORTANT architecture notes: - Hetzner servers are remote VPS/dedicated hosts, deployed as root. - anton is a WSL NixOS host on a Windows laptop, deployed as the nixos user via sudo. - gnomeregan is a home LAN NixOS box (Wi-Fi). Unusual: tracks nixpkgs-unstable, runs the full workstation home-manager stack, uses its own SSH host key as sops identity. See references/gnomeregan.md before changing its config or rebuilding it. - Full-fleet deployments run through the `colmena-deploy` workflow (one host at a time, with web health verification after every switch) — not ad-hoc colmena calls.

Manage NixOS infrastructure for this nix flake project. Deploy configurations with Colmena, troubleshoot services, and maintain servers. Use when: (1) Deploying NixOS configurations with colmena, (2) Troubleshooting server issues via SSH, (3) Checking service status across hosts, (4) Any infrastructure maintenance task. IMPORTANT architecture notes: - Hetzner servers are remote VPS/dedicated hosts, deployed as root. - anton is a WSL NixOS host on a Windows laptop, deployed as the nixos user via sudo. - gnomeregan is a home LAN NixOS box (Wi-Fi). Unusual: tracks nixpkgs-unstable, runs the full workstation home-manager stack, uses its own SSH host key as sops identity. See references/gnomeregan.md before changing its config or rebuilding it. - Full-fleet deployments run through the `colmena-deploy` workflow (one host at a time, with web health verification after every switch) — not ad-hoc colmena calls.

Configure and verify Borg backups for this nix flake project. Use when adding, changing, auditing, or troubleshooting backup schedules on gnomeregan, including remote SSH/rsync-staged backups from other hosts.

Upgrade Woodpecker CI across the server, Linux agent, and macOS agent while keeping the gRPC protocol version in lockstep. Use when the user wants to upgrade Woodpecker, bump the agent or server, or investigate a "GRPC version mismatch" error.

Spawn a pi subagent in a visible cmux pane, run a task in it, collect the answer, and close the pane. Use when you want to delegate a self-contained task to a separate pi process running in its own cmux split (deploy → execute → collect → remove), instead of doing the work inline. Requires running inside a cmux surface.

Remove signs of AI-generated writing from text. Use when editing or reviewing text to make it sound more natural and human-written. Based on Wikipedia's comprehensive "Signs of AI writing" guide. Detects and fixes patterns including: inflated symbolism, promotional language, superficial -ing analyses, vague attributions, em dash overuse, rule of three, AI vocabulary words, negative parallelisms, and excessive conjunctive phrases.

Develop mods for Hytale, a voxel-based sandbox RPG by Hypixel Studios. Use when creating server plugins (commands, events, entities), working with the Entity Component System (ECS), creating custom UI, managing inventory, world generation, prefabs, or publishing mods. Covers Java 25 development with Maven, IntelliJ IDEA setup, and the complete plugin development lifecycle.

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.

Reference for the Woodpecker CI command-line tool. Use when working with Woodpecker CI pipelines, managing repositories, secrets, registries, organizations, or users via the CLI. Covers pipeline operations (start, stop, approve, logs), repository management, secret/registry configuration, and local pipeline execution.

Patterns and hard-won gotchas for designing, debugging, and writing Woodpecker CI pipeline files. Use when authoring or editing `.woodpecker.yml` / `.woodpecker/*.yml`, when a pipeline shows `error` status with no step logs, when shell variables in `commands:` blocks are not interpolating as expected, when splitting between single-file and multi-pipeline directory layouts, or when running iOS signing / archive flows on a non-interactive Mac agent. Companion to the `woodpecker-cli` skill (which is the CLI reference) — this one is the workflow-design + debugging reference.

Install a pi (pi.dev coding agent) package/extension/skill into this nix flake declaratively, instead of running `pi install npm:...`. Use when the user gives a `pi install npm:<pkg>` / `pi install git:<repo>` command, links a https://pi.dev/packages/... page, or asks to add a pi extension/skill/theme/prompt to the nix config. Also covers bumping the pi CLI itself (pi-coding-agent). Pi calls these "packages"; the user may call them "modules".

Install a Claude Code plugin or skill collection into this nix flake declaratively, the same way superpowers/cmux/cc-skills-golang are wired. Use when the user gives a `/plugin marketplace add ...`, `/plugin install ...`, or `npx skills add ...` command, or asks to add a Claude plugin/skill repo to the nix config. Covers fetching+pinning the repo, classifying its layout (self-contained plugin / marketplace / curated subset / no-manifest skills repo), and wiring it into home-manager.

Add, remove, or modify SOPS secrets used by workstation home-manager and NixOS server services. Use when: (1) Adding a new secret for an MCP server, service, or tool, (2) Removing a deprecated secret, (3) Wiring a secret into a sops.template (e.g. MCP config with API key), (4) Understanding how secrets flow from the external nix-secrets repo into this flake.

Provision new NixOS hosts for this nix flake project (Hetzner cloud servers or Proxmox LXC containers). Guides through host creation, SSH setup, Colmena registration (init/full pattern), SOPS infrastructure-key bootstrap, and application deployment with nginx proxy, PostgreSQL, and container images. Use when: (1) Setting up a new Hetzner server, (2) Setting up a new Proxmox LXC NixOS host, (3) Adding a new host to Colmena, (4) Deploying applications with nginx SSL proxy and/or PostgreSQL database, (5) Adding new container images to the repository.

Update container digests and deploy affected hosts end-to-end. Use when the user wants to check for container updates, update container digests, or deploy container changes. Triggers on requests like "update containers", "check for container updates", "deploy container updates", or "run container-update-report".