---
id: d75e2afd-8348-4fe6-9ea1-731604505aa6
type: workflow
title: "Pattern: Parallel /simplify agents with isolated worktrees for large refactors"
tags: [sba-scouting, rust, claude-code, workflow, refactoring, parallel, worktree]
importance: 0.6
confidence: 0.8
created: "2026-03-02T02:08:58.862746+00:00"
updated: "2026-03-02T02:20:43.812285+00:00"
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# Parallel /simplify with Isolated Worktree Agents

## Overview
Successfully ran 17 parallel agents with `isolation: "worktree"` to simultaneously review and simplify every substantive file in the Rust codebase.

## How It Works
- Each agent gets its own git worktree copy of the repo
- Agents applied changes directly to the main working tree (not isolated to their worktrees)
- Run all agents in parallel — no coordination needed for read-heavy simplification tasks

## Results on sba-scouting Rust rewrite
- 17 agents, 24 files modified
- Net: -261 lines removed
- All 105 tests passed after integration

## Common Simplifications Found
- Duplicated helpers consolidated: `format_rating`, `format_swar`, `tier_style`, `format_relative_time`
- Heap allocations replaced with stack arrays/HashSets
- `OnceLock` for invariant hashes (computed once, reused)
- Transaction wrapping for atomic DB operations
- `tokio::try_join!` for parallel async DB queries

## When to Use
- Large refactor/cleanup passes across many files
- When changes are independent per-file (no cross-file coordination needed)
- After a feature phase is complete and code needs polish

## Usage
Use `/simplify` slash command (or equivalent Agent tool call) with `isolation: "worktree"` per file.