My workflow for building side projects and work tools with AI coding agents that actually survive past the first month. Covers model choices (Claude Opus, Codex

My workflow for building side projects and work tools with AI coding agents that actually survive past the first month. Covers model choices (Claude Opus, Codex, Qwen), a docs-first approach (PITCH/ARCHITECTURE/IMPLEMENTATION), guardrails, context management via slash commands, and what I stopped using (MCP servers, multi-agent teams, instruction files). Includes dogfooding results — what shipped and what broke.