Prp Prd

Assess technical feasibility for: {product/feature}

LOCATE:
1. Existing infrastructure we can leverage
2. Similar patterns already implemented
3. Integration points and dependencies
4. Relevant configuration and type definitions

Return file locations, code patterns, and conventions observed.

Analyze technical constraints for: {product/feature}

TRACE:
1. How existing related features are implemented end-to-end
2. Data flow through potential integration points
3. Architectural patterns and boundaries
4. Estimated complexity based on similar features

Document what exists with precise file:line references. No suggestions.

Research technical approaches for: {product/feature}

FIND:
1. Technical approaches others have used
2. Common implementation patterns
3. Known technical challenges and pitfalls

Return findings with citations and gap analysis.

# --- 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"

# {Product/Feature Name}

## Problem Statement

{2-3 sentences: Who has what problem, and what's the cost of not solving it?}

## Evidence

- {User quote, data point, or observation that proves this problem exists}
- {Another piece of evidence}
- {If none: "Assumption - needs validation through [method]"}

## Proposed Solution

{One paragraph: What we're building and why this approach over alternatives}

## Key Hypothesis

We believe {capability} will {solve problem} for {users}.
We'll know we're right when {measurable outcome}.

## What We're NOT Building

- {Out of scope item 1} - {why}
- {Out of scope item 2} - {why}

## Success Metrics

| Metric | Target | How Measured |
|--------|--------|--------------|
| {Primary metric} | {Specific number} | {Method} |
| {Secondary metric} | {Specific number} | {Method} |

## Open Questions

- [ ] {Unresolved question 1}
- [ ] {Unresolved question 2}

---

## Users & Context

**Primary User**
- **Who**: {Specific description}
- **Current behavior**: {What they do today}
- **Trigger**: {What moment triggers the need}
- **Success state**: {What "done" looks like}

**Job to Be Done**
When {situation}, I want to {motivation}, so I can {outcome}.

**Non-Users**
{Who this is NOT for and why}

---

## Solution Detail

### Core Capabilities (MoSCoW)

| Priority | Capability | Rationale |
|----------|------------|-----------|
| Must | {Feature} | {Why essential} |
| Must | {Feature} | {Why essential} |
| Should | {Feature} | {Why important but not blocking} |
| Could | {Feature} | {Nice to have} |
| Won't | {Feature} | {Explicitly deferred and why} |

### MVP Scope

{What's the minimum to validate the hypothesis}

### User Flow

{Critical path - shortest journey to value}

---

## Technical Approach

**Feasibility**: {HIGH/MEDIUM/LOW}

**Architecture Notes**
- {Key technical decision and why}
- {Dependency or integration point}

**Technical Risks**

| Risk | Likelihood | Mitigation |
|------|------------|------------|
| {Risk} | {H/M/L} | {How to handle} |

---

## Implementation Phases

<!--
  STATUS: pending | in-progress | complete
  PARALLEL: phases that can run concurrently (e.g., "with 3" or "-")
  DEPENDS: phases that must complete first (e.g., "1, 2" or "-")
  PLAN: link to generated plan file once created
  REPORT: link to the implementation report once implemented
  PR: link to the pull request once opened
-->

| # | Phase | Description | Status | Parallel | Depends | Plan | Report | PR |
|---|-------|-------------|--------|----------|---------|------|--------|----|
| 1 | {Phase name} | {What this phase delivers} | pending | - | - | - | - | - |
| 2 | {Phase name} | {What this phase delivers} | pending | - | 1 | - | - | - |
| 3 | {Phase name} | {What this phase delivers} | pending | with 4 | 2 | - | - | - |
| 4 | {Phase name} | {What this phase delivers} | pending | with 3 | 2 | - | - | - |
| 5 | {Phase name} | {What this phase delivers} | pending | - | 3, 4 | - | - | - |

### Phase Details

**Phase 1: {Name}**
- **Goal**: {What we're trying to achieve}
- **Scope**: {Bounded deliverables}
- **Success signal**: {How we know it's done}

**Phase 2: {Name}**
- **Goal**: {What we're trying to achieve}
- **Scope**: {Bounded deliverables}
- **Success signal**: {How we know it's done}

{Continue for each phase...}

### Parallelism Notes

{Explain which phases can run in parallel and why, e.g., "Phases 3 and 4 can run in parallel in separate worktrees as they touch different domains (frontend vs auth)"}

---

## Decisions Log

| Decision | Choice | Alternatives | Rationale |
|----------|--------|--------------|-----------|
| {Decision} | {Choice} | {Options considered} | {Why this one} |

---

## Research Summary

**Market Context**
{Key findings from market research}

**Technical Context**
{Key findings from technical exploration}

---

*Generated: {timestamp}*
*Status: DRAFT - needs validation*

## PRD Created

**File**: `{expanded absolute path to $PRP_DIR/prds/{name}.prd.md}`

### Summary

**Problem**: {One line}
**Solution**: {One line}
**Key Metric**: {Primary success metric}

### Validation Status

| Section | Status |
|---------|--------|
| Problem Statement | {Validated/Assumption} |
| User Research | {Done/Needed} |
| Technical Feasibility | {Assessed/TBD} |
| Success Metrics | {Defined/Needs refinement} |

### Open Questions ({count})

{List the open questions that need answers}

### Recommended Next Step

{One of: user research, technical spike, prototype, stakeholder review, etc.}

### Implementation Phases

| # | Phase | Status | Can Parallel |
|---|-------|--------|--------------|
{Table of phases from PRD}

### To Start Implementation

Run: `$prp-plan {expanded absolute path to $PRP_DIR/prds/{name}.prd.md}`

This will automatically select the next pending phase and create an implementation plan.

┌─────────────────────────────────────────────────────────┐
│  INITIATE: "What do you want to build?"                 │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│  FOUNDATION: Who, What, Why, Why now, How to measure    │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│  GROUNDING: Market research, competitor analysis        │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│  DEEP DIVE: Vision, Primary user, JTBD, Constraints     │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│  GROUNDING: Technical feasibility, codebase exploration │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│  DECISIONS: MVP, Must-haves, Hypothesis, Out of scope   │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│  GENERATE: Write PRD to $PRP_DIR/prds/                  │
└─────────────────────────────────────────────────────────┘