dotfiles-suggestions

name	dotfiles-suggestions
description	Analyze shell history and installed tools to suggest dotfiles improvements. Use when looking for missing aliases, functions, completions, or topics based on actual usage patterns. Trigger on "what aliases should I add", "what's missing from my dotfiles", "audit my shell setup", "suggest improvements", "what should I add to my dotfiles", or any request to review dotfiles for gaps.
allowed-tools	["Bash(${CLAUDE_SKILL_ROOT}/scripts/history-freq.sh:*)","Bash(${CLAUDE_SKILL_ROOT}/scripts/history-args.sh:*)","Bash(${CLAUDE_SKILL_ROOT}/scripts/history-sequences.sh:*)"]

Suggest Improvements

Analyze shell history and installed tools to surface dotfiles improvements. This skill only suggests — it never modifies files.

Gather Dotfiles Inventory

Inventory what the dotfiles already provide:

• Aliases: Grep for ^alias across */aliases.zsh and */*.zsh
• Functions: Grep for function definitions across */*.zsh
• Completions: Glob for */completion.zsh, plus list Homebrew-provided completions via ls $HOMEBREW_PREFIX/share/zsh/site-functions/_*
• Topics: list topic directories (top-level dirs excluding .git, .github, .claude, scripts, bin, tmp)
• Brew packages: Grep for ^brew across */Brewfile
• bin/ scripts: list bin/

Run all of these in parallel.

Pre-process History

Use the scripts in scripts/ to produce compact frequency tables from ~/.zsh_history. Each script handles EXTENDED_HISTORY format, LC_ALL=C for binary safety, and supports --recent <duration> filtering.

History spans a long time, so raw counts can be misleading — a command used heavily years ago but not recently is not a good alias candidate. Split analysis into recent (last 6 months) and all-time to distinguish active patterns from stale ones.

Run all of these in parallel:

• Date range: scripts/history-freq.sh --date-range
• Recent frequency: scripts/history-freq.sh --recent 6m
• All-time frequency: scripts/history-freq.sh
• Argument patterns: scripts/history-args.sh --recent 6m
• Multi-command sequences: scripts/history-sequences.sh --recent 6m

Comparing recent vs all-time frequency reveals commands trending up (recent > all-time ratio) vs. fading out (high all-time but absent from recent). Focus suggestions on recently active commands.

Analyze Patterns via Sub-Agent

Launch a general-purpose Agent to do pure text pattern matching on the pre-processed data. Include the full frequency tables and dotfiles inventory directly in the agent prompt — the sub-agent needs no tools since all data is already extracted. This is a text analysis task well-suited to a fast, cheap model.

The sub-agent prompt should include both the recent and all-time frequency tables and ask it to identify:

• Commands used 10+ times recently lacking aliases
• Multi-step sequences repeated 3+ times recently that could become functions
• Tools active in recent history missing from topic directories
• Commands with verbose repeated flags that could be aliased
• Commands lacking completions from both Homebrew site-functions and an explicit completion.zsh
• Commands with high all-time counts but zero/low recent usage (candidates for stale config)

The sub-agent returns a structured list of suggestions with category, priority, and rationale.

Check Installed Tools

Beyond history, the main agent also checks:

• Brew packages without topics: compare brew list against topic directories
• Stale aliases: check if aliased commands still exist on PATH
• Missing completions: only flag a tool if it lacks both a Homebrew-provided completion (_tool in $HOMEBREW_PREFIX/share/zsh/site-functions/) and an explicit completion.zsh in the repo. Most Homebrew formulae ship completions that compinit picks up automatically — these do not need a completion.zsh. Only suggest one when the tool requires explicit eval registration or is not installed via Homebrew.

Present Results

Merge sub-agent findings with installed-tool observations. Group into these top-level categories (h2):

• New Aliases — frequently typed commands that could be shortened
• Function Candidates — repeated multi-command sequences
• Missing Completions — tools lacking completions from both Homebrew site-functions and an explicit completion.zsh
• New Topics — tools installed/used but lacking a topic directory
• Stale Configuration — aliases pointing to missing commands, unused topics

Within each category, group items under priority subheadings (h3): High, Medium, Low. Omit a priority level if it has no items. This makes it easy to scan for the most impactful changes first.

No implementation — suggestions only.

Conventions

• Alias naming follows existing patterns: g=git, gb=git branch, gc=git commit
• History format is EXTENDED_HISTORY: : timestamp:duration;command
• Multi-line history entries use backslash continuation
• Never expose sensitive argument values (tokens, passwords) — frequency analysis naturally avoids this by focusing on command names and flags