Fetch the canonical Charming authoring guide as Markdown

Same prose served as the charming:app-guide MCP prompt. Useful for agents that want the full authoring contract without going through MCP. The compatibility prompt paths redirect here.

curl -X GET 'https://charm.ing/api/prompts/charming-app-guide'

const response = await fetch("https://charm.ing/api/prompts/charming-app-guide", {
  method: "GET"
});

import requests

response = requests.get(
    "https://charm.ing/api/prompts/charming-app-guide",
)

"string"