Integrate fzf, zoxide, and ripgrep for enhanced shell workflow

[Copilot]

Replaces oh-my-zsh z plugin with zoxide (Rust-based, faster) and adds fzf fuzzy finder with ripgrep backend for interactive history/file/directory navigation.

Installation

script/install.d/24-fzf-zoxide-ripgrep.sh (new)

• Multi-platform support: brew, apt, pacman, dnf
• Idempotent checks via command -v
• Zoxide on apt uses curl installer (package repos often outdated)

Shell Configuration

files/home/.zshrc

• Removed z from oh-my-zsh plugins array
• _dots_load_fzf(): Sources key bindings with fallbacks for old versions and multiple install paths
• _dots_load_zoxide(): Initializes zoxide with fzf integration
• FZF environment variables set before loading fzf to ensure Ctrl+T uses ripgrep from initialization:

  export FZF_DEFAULT_COMMAND='rg --files --hidden --glob "!.git"'
  export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"

files/home/.aliases

• alias ji='zi' for interactive directory picker (zoxide + fzf)

Keybindings Enabled

• Ctrl+R: Fuzzy history search
• Ctrl+T: Fuzzy file picker (ripgrep backend)
• Alt+C: Fuzzy directory navigation
• j <query>: Smart directory jump (existing alias, now powered by zoxide)
• ji: Interactive directory picker (new)

Tests

tests/test_binaries.py

• Added fzf, zoxide, rg to binaries list

Original prompt

Overview

Integrate fzf, zoxide, and ripgrep into the dotfiles setup to improve shell workflow:

• fzf: Interactive fuzzy finder for history search (Ctrl+R), file picker (Ctrl+T), and directory navigation (Alt+C)
• zoxide: Faster, Rust-based replacement for the current oh-my-zsh z plugin with native fzf integration
• ripgrep: Fast file content search, optionally used as fzf's file search backend

Requirements

Installation Scripts

Create script/install.d/XX-fzf.sh, script/install.d/XX-zoxide.sh, and script/install.d/XX-ripgrep.sh (or combine logically) following existing patterns:

• Support all package managers: brew (macOS), apt (Debian/Ubuntu/Codespaces), pacman (Arch), dnf (Fedora)
• Skip in Codespaces if pre-installed
• Follow idempotent installation pattern (check command -v before installing)
• Log version after installation

Shell Configuration Changes

In files/home/.zshrc:

1. Remove z from oh-my-zsh plugins array (currently in _dots_load_omz):

   plugins=(
       # z  # replaced by zoxide
       zsh-autosuggestions
       zsh-syntax-highlighting
   )

2. Add fzf initialisation (load immediately, not lazy — key bindings must be available):

   _dots_load_fzf() {
       if command -v fzf &>/dev/null; then
           source <(fzf --zsh 2>/dev/null) || {
               # Fallback for older fzf versions
               local fzf_base="${HOMEBREW_PREFIX:-/opt/homebrew}/opt/fzf/shell"
               [[ -f "$fzf_base/key-bindings.zsh" ]] && source "$fzf_base/key-bindings.zsh"
               [[ -f "$fzf_base/completion.zsh" ]] && source "$fzf_base/completion.zsh"
               # Linux locations
               [[ -f /usr/share/fzf/key-bindings.zsh ]] && source /usr/share/fzf/key-bindings.zsh
               [[ -f /usr/share/fzf/completion.zsh ]] && source /usr/share/fzf/completion.zsh
           }
       fi
   }
   _dots_load_fzf

3. Add zoxide initialisation (load immediately — low overhead ~3-5ms):

   _dots_load_zoxide() {
       command -v zoxide &>/dev/null && eval "$(zoxide init zsh)"
   }
   _dots_load_zoxide

4. Optional: Configure fzf to use ripgrep for file search:

   if command -v rg &>/dev/null; then
       export FZF_DEFAULT_COMMAND='rg --files --hidden --glob "!.git"'
       export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
   fi

Aliases

In files/home/.aliases, the existing alias j='z' will continue to work with zoxide. Add:

alias ji='zi'  # interactive directory jump with fzf

Tests

Update tests/test_binaries.py to include the new binaries:

binaries: List[Text] = [
    # ... existing entries ...
    "fzf",
    "zoxide",
    "rg",  # ripgrep binary name
]

Constraints (from ADRs)

• Startup time: Must remain under 200ms. Benchmark before/after with ZSH_BENCH=1 zsh
• Cross-platform: Support macOS, Debian, Arch, Fedora, GitHub Codespaces
• Naming convention: Use _dots_ prefix for all custom functions
• No lazy loading for fzf: Key bindings must be immediately available for Ctrl+R
• Idempotency: All install scripts must be safe to re-run
• Prefer native package managers: Use brew/apt/pacman/dnf as appropriate per platform

Acceptance Criteria

• fzf, zoxide, and rg binaries are installed on all platforms
• Ctrl+R opens fzf-powered history search
• Ctrl+T opens fzf-powered file picker
• Alt+C opens fzf-powered directory picker
• j <query> jumps to matching directory (zoxide)
• ji opens interactive fzf directory picker (zoxide + fzf)
• Shell startup time remains under 200ms
• All existing tests pass
• New binaries are tested in test_binaries.py

This pull request was created from Copilot chat.

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