Five of the most subtle Godot 4 + C# traps (script loading, config overwrites, build pollution, test runs, naming conflicts), with source-level root-cause analysis, a cheat sheet, and engineering scaffolding — for developers who can already compile and run.

A deep dive into the contract gap between the Vue SFC compiler and TypeScript module resolution, revealing why `export type { ButtonProps } from './Button.vue'` fails in consumer projects — and the complete fix.

A deep dive into three hidden traps of the MCP stdio protocol, recording a real debugging journey — from 401 green tests to a completely unresponsive server — tracing the root cause to three fatal bugs: process.exit(), stdout pollution, and an async race, plus an end-to-end testing solution.