Struct ClaudeStrategy 

pub struct ClaudeStrategy;

Default strategy optimized for Claude models.

Applies research-backed practices:

1. Role-aware ordering (primacy-recency): Instructions → Focus → Context → Examples → Constraints → Schema. Critical directives at the start; output format at the end (closest to generation).

2. Formatting per role:

   • Instruction → plain text, no heading (direct authoritative voice)
   • Context → ## {label}\n\n{content}
   • Focus → ## {label}\n\n{content}
   • Constraint → collected into a bullet list
   • Example → ### Example: {label}\n\n{content}
   • Schema → “Return ONLY valid JSON (no markdown fences):\n{json}” at end

3. Empty blocks are silently skipped.

Trait Implementations

impl PromptStrategy for ClaudeStrategy

fn render(&self, prompt: &Prompt) -> String

Render the prompt to a string.