gatOS

Write scripts and programs against gatOS — the KSA mod that exposes live Kitten Space Agency simulation state as a 9P filesystem at /sim (also over HTTP /v1 and MQTT). Use this when asked to read game/celestial/vehicle telemetry, control vehicles (throttle, ignite, staging, attitude, burns, RCS, lights, docking), use game/debug controls (teleport, impulse kick, refuel, time-warp, switch vessel), or write flight-computer / autopilot programs. Covers the full /sim catalog, the command model, KSA coordinate frames, and worked Bun/TypeScript + Rust examples.

Validate the gatOS mod against a new upstream Kitten Space Agency (KSA) game build — the break-check playbook run when the KSA game / its decompiled sources are bumped and you must decide whether gatOS needs changes. Covers exactly which gatOS surface couples to KSA and where, how to diff the CURRENT (new) vs PREVIOUS (old) decompiled sources, build-as-alarm, semantic-drift review, the reflection + render-internals coupling the compiler can't catch, and which docs to update in lockstep. Use when asked to "check gatOS against the new KSA build", "upgrade KSA", run the version-diff / break-check, or review a game update's impact. REQUIRES two KSA decompiled-source trees to be provided: CURRENT and PREVIOUS.

Author tutorial-style documentation for the gatOS Astro/Starlight docs site (under site/) — the progressive `guides/` series that teaches writing flight-computer / autopilot programs against the gatOS /sim filesystem and its HTTP /v1 mirror. Use this when asked to write, add, or revise a gatOS tutorial or guide, plan the tutorial curriculum, or turn a /sim feature into a lesson. Covers the house style, Starlight/MDX mechanics, the dual-transport (/sim file + HTTP) presentation convention, the reusable code-snippet library, and the beginner→advanced tutorial ladder. Pairs with the `gatos` skill (how the sim works) and docs/TUTORIAL_DATA_REFERENCE.md (the data tutorials are built from).

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React Compiler automatically memoizes React components at build time, eliminating manual useMemo/useCallback/React.memo. Use when asked about React Compiler setup, memoization automation, "use memo"/"use no memo" directives, incremental adoption, compiler debugging, or build tool integration (Babel, Vite, Next.js, Expo, Metro, Rspack, Rsbuild).

React Rules of React — strict adherence required for React Compiler compatibility. Covers purity, idempotency, immutability, hook call rules, and component rendering rules. Use when writing any React component, custom hook, or reviewing React code.

Reference for Astro — the core web framework the gatOS docs site (under site/) is built on. Use this when authoring or editing pages in site/, working with .astro/.md/.mdx files, content collections, the astro.config.mjs, or component/JSX-in-Markdown mechanics. Covers Astro component anatomy, using components in MDX, content collections, frontmatter, imports, expressions, and the build/dev commands — enough to work the site without leaving the repo. Pair with the `starlight` skill (the docs theme + its components) and the `tutorials` skill (the gatOS house style).

Reference for Starlight — the Astro documentation theme the gatOS docs site (under site/) is built with. Use this when authoring or editing tutorial/reference pages: which built-in component to reach for and its exact props (Aside, Tabs/TabItem, Steps, Card/CardGrid, LinkCard, LinkButton, FileTree, Badge, Icon, Code), the page frontmatter schema (title/description/sidebar/tableOfContents/…), the `:::` asides syntax, and the Expressive Code block meta-string (titles, line/text highlighting, diff markers). A self-contained cheat sheet so a session can build a polished page without the Starlight docs site. Pair with the `astro` skill (the framework under it) and `tutorials` (house style).

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ImGui is an immediate mode UI library. KSA uses ImGui for UI

detailed information about kitten space agency (KSA) game code, decompiled sources, modding patterns, architecture and best practices for working with mods and the game codebase

how to use Tomlyn for serialization and deserialization of TOML files in C#