Add Zsh as opt-in alternative shell in Ryoku settings

[Gamegyf]

Summary

Ryoku currently defaults to Fish. Many users who prefer Zsh (or who switched from Fish to Zsh for richer completions and OMZ-style menu navigation) have to manually configure everything from scratch. This proposes an opt-in Zsh shell selector in Ryoku Settings, a pre-configured .zshrc that mirrors the Fish experience, and a Shell Bundle in Ryostore for one-click plugin installation.

Problem

• AUR helpers like paru lack proper completions in Fish
• Live autocomplete is limited to ghost-text + Tab, whereas Zsh + OMZ provides interactive arrow-key menu navigation
• Bracketed paste and other Zsh-native behaviors require manual configuration
• Switching to Zsh currently means hand-editing kitty.conf, .zshrc, and sourcing plugins individually

Proposal

1. Shell selector in Ryoku Settings

• Offer Zsh as an opt-in default shell alongside Fish
• Ryoku Settings already has per-item toggles for system daemons (e.g. the iwd / wpa_supplicant toggle in the network section). A shell selector in the same spirit would let users pick their preferred interactive shell without leaving Settings
• Existing Fish users are unaffected unless they explicitly switch
• On switch, update kitty.conf from shell /usr/bin/fish to shell /usr/bin/zsh (or vice versa), so the terminal launches the selected shell without relying solely on chsh

2. Pre-configured .zshrc matching the Fish experience

• Mirror the existing Ryoku Fish prompt styling (colors, separators, git status) in Zsh
• Include bracketed paste enabled by default:

autoload -Uz bracketed-paste
zle -N bracketed-paste
bindkey '^V' bracketed-paste

• Keep it clean and minimal — same philosophy as the current Fish config, just ported to Zsh

3. Shell Bundle in Ryostore

A one-click bundle in the Bundles tab of Ryostore (same install/remove flow as existing bundles like Gaming, The Influencer, and CachyOS Layer) that installs:

• Oh My Zsh
• zsh-syntax-highlighting
• zsh-autosuggestions
• zsh-autocomplete

These are the plugins I personally use, but the bundle could easily be expanded to include many more Zsh plugins for users to choose from.

The bundle integrates with the pre-configured .zshrc from step 2, so installing it just adds the plugin layer on top of the Ryoku-styled base. Uninstalling cleanly removes the plugins without breaking the base .zshrc.

Why

• People who have used Zsh (and Oh My Zsh) for years, or who specifically ditched Fish for Zsh to get richer completions and menu-based autocompletion, currently have to manually replicate the entire Ryoku Fish experience in Zsh
• Zsh is the default interactive shell on macOS and a first-class option on most major distros, making it a natural fit as an opt-in
• Ryostore is already designed for one-click curated bundles (Gaming, The Influencer, CachyOS Layer), so a Shell Bundle fits the existing pattern without new infrastructure
• Using Zsh natively with Ryoku (dynamic wallpaper retinting, live prompt changes, etc.) makes the desktop feel cohesive regardless of shell choice

Environment

• Distro: Ryoku Arch
• Current shell: Zsh (manually configured)
• Terminal: Kitty