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"""
The most atomic way to train and run inference for a GPT in pure, dependency-free Python.
This file is the complete algorithm.
Everything else is just efficiency.

@karpathy
"""

import os       # os.path.exists
import math     # math.log, math.exp

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Skill: Markdown Newline Escaping in Bash/CLI Commands

Problem

When creating GitHub PRs, issues, or comments via gh CLI commands with multi-line markdown content, newlines are being escaped as literal \n strings instead of actual line breaks.

Example of Broken Output

## Summary\n\nFix duplicate symbol errors...\n\n## Problem\n\nclip.cpp was being compiled twice...

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# Skill: Rust CLI & Storage QA Gotchas

> Concrete bugs found during dogfood QA of a Rust CLI tool with SQLite, TOML, LevelDB, and MCP. Each pattern recurs in other projects.

---

## 1. TOML Does Not Support Top-Level Arrays

`toml::to_string(&Vec<T>)` returns `Err("unsupported rust type")` — TOML requires a top-level table, not an array.

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# Skill: Chrome Extension LevelDB Recovery

> Recovering data from Chrome/Edge/Brave extension LevelDB stores (e.g., OneTab, 1Password, any browser extension that uses `chrome.storage.local`).

---

## Extension Storage Paths

| Browser | Extension LevelDB path |
|---------|----------------------|

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Skill: Spawning & Monitoring Background Coding Agents from Claude Code

Patterns for orchestrating long-running AI coding agents from within a Claude Code session.

---

The Core Pattern

Use Bash tool with run_in_background: true to launch agents, redirect output to a file, and poll progress without blocking the main session.

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Skill: Configuring Custom Agents in OpenCode

How to define custom agents natively in opencode and via oh-my-opencode.

---

Two Configuration Systems

OpenCode has its own native agent configuration, and oh-my-opencode (OMO) extends it with a separate config for its built-in agents. They coexist.

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Skill: oh-my-opencode (OMO) — Ralph Wiggum Loop & Agent Invocation

Learnings from using OMO to autonomously implement multi-phase Rust projects.

---

What is oh-my-opencode?

oh-my-opencode is an OpenCode plugin that adds:

• Ralph Wiggum loop — runs the agent until ALL todos complete, not just one turn

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Skill: Implementing MCP Servers in Rust with rmcp 0.10

Accumulated learnings, pitfalls, and working patterns from implementing tablitz-cli MCP server.

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Summary

rmcp 0.10 uses a macro-driven approach with #[tool_router] and #[tool_handler] that auto-generates most of the boilerplate. The hard part is getting the macro invocation order and parameter schemas right.

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# opencode `titlecase` Crash Fix — Binary Patch

## Problem

When using [opencode](https://github.com/anomalyco/opencode) (v1.2.6) with the [oh-my-opencode](https://github.com/code-yeongyu/oh-my-opencode) plugin in **TypeScript project directories**, the process crashes with:

```
TypeError: undefined is not an object (evaluating 'str3.replace')
      at titlecase (src/util/locale.ts:3:12)
      at task (src/cli/cmd/run.ts:170:24)

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Claude Code TeammateTool - Source Code Analysis

This is not a proposal. This documents existing but hidden functionality found in Claude Code v2.1.19 binary, plus speculation on how it could be used.

---

Executive Summary

TeammateTool already exists in Claude Code. We extracted this from the compiled binary at ~/.local/share/claude/versions/2.1.19 using strings analysis. The feature is fully implemented but gated behind feature flags (I9() && qFB()).