Zsh-compatible completion system (compsys)

This module implements zsh's new completion system with full compatibility for compadd, compset, zstyle, and all completion special parameters.

Architecture

Default Mode (SQLite-backed)

• Cache: ~/.cache/zshrs/compsys.db (55MB with 16,872 function bodies)
• compinit: Parallel fpath scan with rayon, stores bodies in SQLite
• autoload -Xz: Instant lookup from SQLite (~2.7µs)
• No .zcompdump file created

--zsh-compat Mode (Traditional)

• Cache: ~/.zcompdump (761KB)
• compinit: Sequential scan, creates .zcompdump
• autoload -Xz: Scans fpath/zwc files (~70µs)
• Full zsh behavior for debugging/compatibility

Usage

// Default mode (recommended)
zshrs -c 'compinit'

// Compat mode
zshrs --zsh-compat -c 'compinit'

Architecture based on analysis of:

• zsh Src/Zle/compcore.c, complete.c, computil.c
• fish src/complete.rs (for Rust patterns)