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CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project
+
+Yino (a recursive acronym for "Yino Is Not Omarchy") is an opinionated set of configuration files for a desktop
+operating system based on Debian Linux. It is exactly like Omarchy (https://github.com/basecamp/omarchy) but uses
+Debian Linux as a stable base instead of Arch Linux.
+
+See `docs/yino-fsd.md` for the full functional specification and changelog.
+
+## Conventions
+
+- KISS principle applies
+- Minimize dependencies, less is more; discuss with owner before adding any
+- Never install global Python packages; use a venv in this repository when Python dependencies are needed (e.g.
+  `python3 -m venv venv && source venv/bin/activate && pip install ...`)

docs/yino-fsd.md

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+# Yino - Functional Specification Document
+
+## Document Information
+
+| Field   | Value      |
+| :------ | :--------- |
+| Version | 1.0        |
+| Status  | Draft      |
+| Created | 2026-02-15 |
+| Updated | 2026-02-15 |
+
+## 1. Purpose
+
+This document specifies the functional requirements for Yino (a recursive acronym for "Yino Is Not Omarchy") an
+opinionated set of configuration files for a desktop operating system based on Debian Linux. It is exactly like
+[Omarchy](https://github.com/basecamp/omarchy) but uses [Debian Linux](https://www.debian.org/) as a stable base
+instead of Arch Linux.
+
+## 2. Goals
+
+- Produce a feature complete copy of Omarchy based on Debian Linux instead of Arch Linux
+- Replace all Arch specific tooling with Debian compatible counterparts where necessary / required
+- Remove anything that can be removed that has been added to Omarchy in order to deal with its possibly unstable,
+  rolling release base of Arch Linux
+- Just like Omarchy, produce an ISO image that can perform a complete offline installation of Yino
+
+## 3. Architecture
+
+This should match Omarchy's architecture
+
+- Debian Linux as a base
+- Btrfs filesystem
+- Full disk encryption
+- Single user automatic sign in: encrypted disk unlock authenticates user, no further authentication is required
+  except for unlocking the session and super user commands (sudo)
+- Wayland only
+- Latest Hyprland version as compositor and desktop environment
+- Target architecture is amd64, reference hardware will be Framework 13 AMD Ryzen™ 7040 laptop
+
+## 4. Design principles
+
+- Version control (git) must be used
+- Less is more, minimize dependencies, avoid pulling in extra dependencies, always talk through with owner first
+- Keep it simple, KISS principle applies
+- Keep a changelog in this functional specification document
+
+## 5. Development environment
+
+- QEMU should be used for testing and demo virtual machines
+- Keep a cache of downloaded assets (e.g. Debian installation ISO) in this repository's `download` directory
+
+## 6. Changelog

download/.keep

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+.keep