PM Brain — скилл

---
name: pm-brain
description: Initialize a PM Brain — a markdown-native second brain for a product operator (PM, product lead, founder, or anyone accountable for one product or initiative) doing judgment-heavy work with scattered inputs. Detects greenfield vs. migration mode, runs a focused interview, copies the deterministic scaffold into the working directory, populates placeholders from interview answers, runs a self-test, and commits. Use when invoked via `/pm-brain` or when the user asks to set up a PM Brain.
---

# PM Brain — Skill

This skill scaffolds and initializes a PM Brain in the current working directory. The scaffold is deterministic (static files copied as-is from `scaffold/`). The reasoning is adaptive (loaded from `prompts/` per phase).

## Architectural split

| Layer | Where it lives | Why |
| --- | --- | --- |
| **Static structure** — schemas, CLAUDE.md, INDEX.md, folder tree, file templates | `scaffold/` | Deterministic. Same every time. No generation needed. |
| **Adaptive reasoning** — mode detection, migration, interview, post-scaffold self-test | `prompts/` | Probabilistic. Depends on what's in the directory and what the PM says. |
| **Orchestration** — when to do what | This file | Glue. |

Behavior evolves independently from structure. Schemas can change without touching reasoning. Reasoning can improve without rewriting schemas.

## When to invoke

- Operator runs `/pm-brain` (or pastes a setup request like "set up a PM Brain here").
- Operator asks to add a PM Brain to an existing directory of PM artifacts.

Do **not** invoke this skill for routine PM Brain operations after init (ingestion, prep, review). Those are handled by the seeded `CLAUDE.md` operating manual in the target repo.

## Workflow

### 1. Detect mode

Load `prompts/mode-detection.md`. Inspect the current working directory. Decide: **greenfield** (empty), **migration** (PM artifacts present), or **active-repo** (working repo — pause and ask).

Announce the detected mode to the operator in one line. For active-repo mode, do not proceed without confirmation.

### 2. If migration mode

Load `prompts/migration.md`. **Copy** (do not move) pre-existing PM artifacts into a `source/` folder. Bulk-ingest with epistemic caution. Record cross-document conflicts for the post-scaffold contradictions block.

### 3. Run the interview