Sam Keen samkeen

Cascadia Builders Club: House Rules and Code of Conduct

We're here for one reason: the joy of building. This is a room full of people who make things: hardware, software, weird little robots, half-finished experiments. People who want to show them to other people who get it. Everything below exists to keep it that way.

This is a safe space, full stop

Zero tolerance for making anyone feel uncomfortable. That's the rule that sits above every other rule here. Harassment, condescension, gatekeeping, unwanted attention, or "well, actually"-ing someone into the ground: none of it belongs in this room. Everyone here is at a different point in their build, and every one of them deserves to feel welcome walking in with whatever they've got.

Show us what you're making, not what you're selling

Interview Coach Prompt — Interactive Mock Interview (STAR Method)

You are an expert interview coach running a live, interactive mock interview. You alternate between two modes: Interviewer (realistic, in-character) and Coach (warm but honest feedback). Work through questions one at a time.

I'll provide:

A job posting (required)
My resume (required)
A cover letter (optional)

Setup (do this first)

Rust data modeling

Ownership forms a tree/DAG, never a cycle. One clear owner per value.
For references between values (or any logical cycle): use slotmap keys, or Vec indices only if nothing is ever removed. Do NOT default to Rc<RefCell<T>>; treat Rc / Arc<Mutex<T>> as last resorts after trying ownership + keys.
Prefer owned fields over borrowed (&'a T) fields. If a struct sprouts a lifetime parameter, reconsider — it usually wants owned data or a key. Legitimate exception: a short-lived, Copy, read-only view struct passed into one call and never stored (e.g. NoteRow in db.rs) — borrowing there avoids a needless clone; keep it, and say so in the doc-comment.
Never silence the borrow checker with a reflexive .clone(). Diagnose ownership first: should this be a key instead of a reference?
No self-referential structs in safe Rust; restructure with indices.
No .unwrap() / .expect() in production paths; handle via match, if let, or ?. This holds even for an invaria

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>B2 — System Architecture</title>
	<style>
	:root{
	--bg:#0d1117; --panel:#161b22; --panel2:#1c2330; --ink:#e6edf3; --muted:#9aa7b4;
	--line:#2a3340; --accent:#58a6ff; --green:#3fb950; --amber:#d29922; --purple:#bc8cff;

	{
	"hooks": {
	"InstructionsLoaded": [
	{
	"hooks": [
	{
	"type": "command",
	"command": "jq -r '({\"User\":\"👤\",\"Project\":\"📁\",\"Local\":\"📍\",\"Plugin\":\"🔌\"}[.memory_type] // \"📄\") as $e \| \"\\($e) \\(.memory_type) \\(.file_path) \\(.load_reason)\"' >> instructions-loaded.log"
	}
	]

	╭─── Claude Code v2.1.100 ─────────────────────────────────────────────────────╮
	│ │ Tips for getting │
	│ Welcome back Sam! │ started │
	│ │ Run /init to create a … │
	│ ▐▛███▜▌ │ ─────────────────────── │
	│ ▝▜█████▛▘ │ Recent activity │
	│ ▘▘ ▝▝ │ No recent activity │
	│ Opus 4.6 (1M context) · Claude Max · │ │
	│ ~/Projects/rss-reader/src-tauri │ │
	╰──────────────────────────────────────────────────────────────────────────────╯

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Claude Code — /init session #2</title>
	<link rel="preconnect" href="https://fonts.googleapis.com">
	<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;1,400&family=Syne:wght@400;600;700;800&display=swap" rel="stylesheet">
	<style>
	, ::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Claude Code — /init session</title>
	<link rel="preconnect" href="https://fonts.googleapis.com">
	<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;1,400&family=Syne:wght@400;600;700;800&display=swap" rel="stylesheet">
	<style>
	, ::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

	❯ how does this app work

	⏺ Bash(date '+%Y-%m-%d %H:%M:%S %z')
	⎿ 2026-03-07 19:43:19 -0800

	⏺ Based on the CLAUDE.md and project structure, here's how Demo Kit works:

	What It Is

	A web platform for structured demo nights and project showcases. Think: hackathon demo day as a service.

	❯ how does this app work

	⏺ Bash(date '+%Y-%m-%d %H:%M:%S %z')
	⎿ 2026-03-07 19:39:07 -0800

	⏺ Searched for 2 patterns, read 5 files (ctrl+o to expand)

	⏺ Here's how Demo Kit works:

	The Big Picture