Instructions: After EVERY checkbox, test that it works by visiting the HTTP endpoint URL (look it up via Val Town MCP). Mark ✅ by editing this file in Val Town only after confirming it works.

• Fix the readFile type to take two strings and return a Promise of string or undefined.
• Audit all the type signatures of all the functions and replace any with better types
• Add ts syntax highlighting for the function signature and the example. Strip the ts from the examples
• Add precise type information for all inputs and outputs. Users should know exactly every field of every input and every output type.
• Linking to ranges in val town is: #L60-74 (now it's bugging at #L60-L74, we need to remove second L)
• Linkify all the function names with hash-based id links. They should be clickable and link to themselves.
• The left side panel should go away when the screen is too narrow
• The note about file-system access belongs both at the top of the docs and also briefly mentioned in the readfile and listfile functions too.
• Rewrite _docs.ts to use Hono JSX (no html strings) and twind for css.
• (For later) Augment the docs generator with test information.