Immi manufaktor

Protecting Against Autonomous Agent rm -rf Commands

Protecting Against Agent `rm -rf` Commands

AI coding agents can run shell commands. Sometimes they run rm -rf by mistake. This deletes files forever. While of course I always read and approve all tool calls manually, by hand, and never let my agents work except under direct supervision 100% of the time, sometimes I miss things.

How It Works

Hooks catch rm -rf before it runs
Refuse the command with a clear error telling you to use trash

🆕 Update: See more extensive repo here: https://github.com/marckohlbrugge/unofficial-37signals-coding-style-guide

The Unofficial 37signals/DHH Rails Style Guide

About This Document

This style guide was generated by Claude Code through deep analysis of the Fizzy codebase - 37signals' open-source project management tool.

Why Fizzy matters: While 37signals has long advocated for "vanilla Rails" and opinionated software design, their production codebases (Basecamp, HEY, etc.) have historically been closed source. Fizzy changes that. For the first time, developers can study a real 37signals/DHH-style Rails application - not just blog posts and conference talks, but actual production code with all its patterns, trade-offs, and deliberate omissions.

pg_dump is a nifty utility designed to output a series of SQL statements that describes the schema and data of your database. You can control what goes into your backup by using additional flags.
Backup: pg_dump -h localhost -p 5432 -U postgres -d mydb > backup.sql

Restore: psql -h localhost -p 5432 -U postgres -d mydb < backup.sql

-h is for host.
-p is for port.
-U is for username.
-d is for database.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	# Rails production setup via SQLite3 made durable by https://litestream.io/
	# Copy this to Dockerfile on a fresh rails app. Deploy to fly.io or any other container engine.
	#
	# try locally: docker build . -t rails && docker run -p3000:3000 -it rails
	#
	# in production you might want to map /data to somewhere on the host,
	# but you don't have to!
	#
	FROM ruby:3.0.2

	-- how to model threaded comments (e.g. reddit comments) in SQL with a simple 'ancestors' column

	-- The comment tree:
	-- [1]
	-- / \
	-- [2] [4]
	-- / \ \
	-- [3] [7] [6]
	-- /
	-- [5]

	FROM madnight/docker-alpine-wkhtmltopdf as wkhtmltopdf_savior

	# STAGE for bundle & yarn install
	FROM ruby:2.4.3-alpine3.7 as builder

	ENV CA_CERTS_PATH /etc/ssl/certs/
	ENV RAILS_ENV production
	ENV RAILS_LOG_TO_STDOUT true
	ENV RAILS_SERVE_STATIC_FILES true

	<!DOCTYPE html>
	<html>
	<head>
	<title>Customized range slider, pure CSS</title>
	<style>
	body {
	background: #f8f8f8;
	}
	.slider {
	width: 302px;

	<!DOCTYPE html>
	<html>
	<head>
	<title>Toggle Switch</title>
	<style>
	.switch {
	position: relative;
	}
	.switch label {
	width: 55px;

	(function ($) {
	'use strict';

	/* Based on https://github.com/wikimedia/mediawiki-extensions-NavigationTiming/ */

	function recordTimeToFirstPaint() {
	// Use Chrome's loadTimes or IE 9+'s msFirstPaint to record the time to render in milliseconds:
	var firstPaintTime, timingSource;

	if ('chrome' in window && $.isFunction(window.chrome.loadTimes)) {