Codebase Question Research

date -u +"%Y-%m-%dT%H:%M:%SZ"
git rev-parse --short HEAD
git branch --show-current
basename $(git rev-parse --show-toplevel)

# --- PRP store resolver (canonical; keep byte-identical across skills) ---
# Adopt the store that already records this root; mint a key only when none does.
_gd="$(git rev-parse --path-format=absolute --git-common-dir 2>/dev/null)"
case "$_gd" in */.git) _root="${_gd%/.git}" ;; "") _root="$PWD" ;; *) _root="$_gd" ;; esac
_root="$(cd "$_root" && pwd -P)"
_name="$(basename "$_root" | tr '[:upper:]' '[:lower:]' | tr -cs 'a-z0-9' '-' | sed 's/^-*//;s/-*$//')"
_home="${PRP_HOME:-$HOME/.prp}"
_hit="$(grep -lsF "\"path\": \"$_root\"" "$_home"/*/project.json 2>/dev/null | head -1)"
PRP_DIR="${_hit%/project.json}"
[ -n "$PRP_DIR" ] || PRP_DIR="$_home/${_name:-project}-$(printf %s "$_root" | git hash-object --stdin | cut -c1-8)"
mkdir -p "$PRP_DIR"; [ -f "$PRP_DIR/project.json" ] || printf '{"path": "%s", "name": "%s"}\n' "$_root" "${_name:-project}" > "$PRP_DIR/project.json"
mkdir -p "$PRP_DIR/research"

---
date: {ISO timestamp with timezone}
git_commit: {short hash}
branch: {branch name}
repository: {repo name}
topic: "{User's Question/Topic}"
tags: [research, codebase, {relevant-component-names}]
status: complete
last_updated: {YYYY-MM-DD}
---

# Research: {User's Question/Topic}

**Date**: {ISO timestamp}
**Git Commit**: {short hash}
**Branch**: {branch name}
**Repository**: {repo name}

## Research Question

{Original user query}

## Summary

{High-level documentation of what was found, answering the question by describing what exists}

## Detailed Findings

### {Component/Area 1}

- Description of what exists (`file.ts:123`)
- How it connects to other components
- Current implementation details

### {Component/Area 2}

...

## Code References

| File | Lines | Description |
|------|-------|-------------|
| `path/to/file.ts` | 123-145 | {What's there} |
| `another/file.ts` | 45-67 | {What's there} |

## Architecture Documentation

{Current patterns, conventions, and design implementations found}

## Open Questions

- {Areas that need further investigation}

# Check if on main or pushed
git branch --show-current
gh repo view --json owner,name -q '"\(.owner.login)/\(.name)"'

## Research Complete

**Question**: {original question}
**Document**: `{expanded absolute path to $PRP_DIR/research/{filename}.md}`

### Summary

{2-3 sentence answer to the question}

### Key Findings

- **{Finding 1}**: {brief} (`file.ts:123`)
- **{Finding 2}**: {brief} (`file.ts:456`)
- **{Finding 3}**: {brief} (`file.ts:789`)

### Architecture

{1-2 sentence description of relevant architecture}

### Open Questions

- {Any unanswered aspects}

### Follow-up

To dig deeper: `/prp-codebase-question --follow-up {topic}`
To include external docs: `/prp-codebase-question --web {topic}`

# Basic codebase question
/prp-codebase-question how does authentication work

# Include external documentation
/prp-codebase-question --web how does the PRP runner execute commands

# Follow up on previous research
/prp-codebase-question --follow-up what error handling patterns exist in the runner

# Locate and document a specific area
/prp-codebase-question where are all the command templates and how are they structured