---

name: dotfiles-development description: This skill should be used when working in the dotfiles repository. Triggers on phrases like "edit zshrc", "shell config", "bash aliases", "SSH config", "neovim config", "write a script", "bash script", "claudescripts", "GitHub Actions failures", "CI/CD", "test bash", "bats test", "fix permissions", "add new config", "symlink", or any mention of bin/ scripts, claudescripts/, nvim/, or ssh/. Use for ALL development tasks in this repo including shell configuration, script writing, testing, and CI/CD setup.

Dotfiles Development

Symlink Architecture

~/.dotfiles -> <repo>               # Primary anchor (points to repo root)
~/.zshrc                            # Bootstrap file (sources ~/.dotfiles/zshrc)
~/.ssh/config -> ~/.dotfiles/ssh/config
~/.config/nvim -> ~/.dotfiles/nvim
~/.claudescripts -> ~/.dotfiles/claudescripts

All paths resolve through ~/.dotfiles. Scripts find the repo via:

DOTFILES_DIR="$(readlink -f "$HOME/.dotfiles")"

Agent Selection

digraph agent_selection {
    "Task type?" [shape=diamond];
    "Git operation?" [shape=diamond];
    "GitHub/Actions?" [shape=diamond];
    "Writing script?" [shape=diamond];

    "git-ops (Haiku)" [shape=box];
    "gh-cli-expert (Sonnet)" [shape=box];
    "bash-script-architect + bash-tdd-architect (parallel)" [shape=box];
    "devops-infra-lead (Sonnet)" [shape=box];
    "No agent needed" [shape=box];

    "Task type?" -> "Git operation?";
    "Git operation?" -> "git-ops (Haiku)" [label="yes"];
    "Git operation?" -> "GitHub/Actions?" [label="no"];
    "GitHub/Actions?" -> "gh-cli-expert (Sonnet)" [label="yes"];
    "GitHub/Actions?" -> "Writing script?" [label="no"];
    "Writing script?" -> "bash-script-architect + bash-tdd-architect (parallel)" [label="yes"];
    "Writing script?" -> "devops-infra-lead (Sonnet)" [label="infra/CI work"];
    "Writing script?" -> "No agent needed" [label="config edit"];
}

Agent	Model	Use For
git-ops	Haiku	All git operations - commits, branches, status. Isolates git context. Always commit AND push.
bash-script-architect	Haiku	Writing/debugging bash scripts
bash-tdd-architect	inherit	TDD for bash scripts - runs IN PARALLEL with bash-script-architect
gh-cli-expert	Sonnet	GitHub Actions failures, PR management, gh CLI
devops-infra-lead	Sonnet	Infrastructure, CI/CD, system admin

Important: For committing changes, use the git-ops agent (not generic skills). It keeps git output isolated from the main context window.

git-ops Commit Workflow: When prompting git-ops for commits, ALWAYS include "and push to remote" in the prompt. Example: "Commit these changes and push to origin main."

TDD for Scripts: When writing or modifying bash scripts, launch bash-tdd-architect IN PARALLEL with bash-script-architect. The TDD agent designs behavior-driven tests BEFORE seeing implementation, ensuring true test-first development.

Dependencies

Install via Homebrew on macOS:

Tool	Install	Purpose
bats-core	brew install bats-core	Bash Automated Testing System
yq	brew install yq	YAML query tool (used by actions-fails)
jq	brew install jq	JSON processor
gh	brew install gh	GitHub CLI

Wrapper Scripts (claudescripts/)

Script	Model	Purpose
push	Haiku	Quick commit/push with conventional commits
ghcli	Sonnet	GitHub CLI operations
support	Opus	Bash debugging with web search

Configuration files:

• profile - Claude Code configuration (settings, model preferences)

Accessed via ~/.claudescripts symlink (in PATH).

Utility Scripts (bin/)

Script	Purpose
actions-fails	Check workspace repos for GitHub Actions failures (JSON output)

Configuration: bin/repos.yaml - List of repos to monitor

Alias: af - shortcut for actions-fails

Adding New Configurations

1. Add file to repo root (no dot prefix in name)
2. Add chmod line to bin/dotfiles-fix-perms:
   • Scripts/dirs: chmod 700
   • Config files: chmod 600
3. Add symlink (if needed) to setup_symlinks() in bin/dotfiles-install

Permission Model

Type	Permission	Example
Directories	700	nvim/, bin/
Scripts	700	bin/dotfiles-install, bin/dotfiles-sync
Config files	600	zshrc, ssh/config

Git hooks auto-fix permissions on pulls via bin/dotfiles-fix-perms.

Testing

Shell Config Testing

source ~/.zshrc                      # Reload shell config
./bin/dotfiles-install               # Safe to re-run (idempotent)
ls -la                               # Verify permissions

Bash Script Testing with Bats

Use bats-core for behavior-driven testing of bash scripts.

Run tests:

bats bin/tests/                      # Run all tests in directory
bats bin/tests/test-actions-fails.bats  # Run specific test file

Test structure (Given/When/Then):

@test "description of expected behavior" {
    # Given: setup
    local test_config="$TEST_TEMP_DIR/test.yaml"

    # When: action
    run "$SCRIPT" --flag "$test_config"

    # Then: assertion
    [[ "$status" -eq 0 ]]
    [[ "$output" =~ expected_pattern ]]
}

Key bats variables:

• $status - exit code of last run command
• $output - stdout+stderr combined
• $BATS_TEST_DIRNAME - directory containing test file

Skill Testing

The skill itself has tests in .claude/skills/dotfiles-development/tests/:

./run_tests.sh                       # Run all skill tests
./test_add_config.sh                 # Run individual test

Tests verify skill guides Claude correctly by comparing responses with/without skill access.

Common Mistakes

Mistake	Fix
Adding dot prefix to files	Use zshrc not .zshrc - symlinks add the dot
Forgetting fix-perms	Every new file needs a chmod line in bin/dotfiles-fix-perms
Wrong permission value	Scripts=700, configs=600
Editing ~/.zshrc directly	Edit zshrc at repo root - bootstrap file just sources it
Hardcoding paths	Use $HOME/.dotfiles or resolve via symlink

Bash Gotchas

Empty Arrays with set -u

set -u (nounset) causes scripts to fail when referencing empty arrays:

# BAD - fails if arr is empty
for item in "${arr[@]}"; do
    echo "$item"
done

# GOOD - safe expansion for potentially empty arrays
for item in ${arr[@]+"${arr[@]}"}; do
    echo "$item"
done

The ${arr[@]+"${arr[@]}"} pattern only expands if the array is set and non-empty.

Script Header Template

Standard header for new bash scripts in this repo:

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

# Script description here

Flags:

• -e - Exit on error
• -u - Error on unset variables
• -o pipefail - Pipeline fails if any command fails

Key Files

• bin/dotfiles-install - Bootstrap, symlinks, dependencies
• bin/dotfiles-fix-perms - Permission management
• bin/dotfiles-sync - Pull and fix permissions
• CLAUDE.md - Repository overview
• bin/CLAUDE.md - Scripts documentation