type: prompt-template name: prompt-system-guide model: anthropic/claude-haiku-4.5

Explain how QNTX prompt templates work, using {{subject}} as the example.

Include:

1. Frontmatter: YAML configuration at the top (type, name, model)
2. Template syntax: {{field}} placeholders map to attestation fields
3. X-sampling: Test prompts against X random attestations before deployment
4. Available fields: {{subject}}, {{context}}, {{attributes}}, {{predicates}}, etc.
5. Preview workflow: Edit template → Run Preview → Compare outputs → Deploy

Show how {{subject}} demonstrates these concepts, referencing its implementation in {{context}}.

QNTX Prompt System Development Tracker

Vision: Enable confidence in prompt changes through X-sampling preview: sample X attestations, execute prompt X times, compare outputs against previous versions. This transforms prompt development from risky production experiments to controlled, iterative refinement.

Tracking PR: #301 - QNTX Prompt: Attestation-based LLM prompt templates with frontmatter

✅ Merged Work

• #300 - Add YAML frontmatter support for prompt configuration
• #304 - Add frontmatter UI support to Prose editor
• #305 - Implement CSV export action (⟶)
• #330 - Add prompt preview API endpoint with X-sampling (closes #314)
• #338 - Prompt UI (frontend preview panel, closes #316)

🔥 Critical Issues (Next PRs)

• #315 - Implement prompt version comparison logic using attestations

📋 Non-Critical Issues (Future)

• #317 - Support .prompt.md file extension for prompt detection
• #318 - Add visual indicators for prompt files in Prose tree
• #319 - Implement n8n-style {{}} field selector for prompt templates
• #320 - Add prompt action to command palette SO integration
• #321 - Enable scheduled prompt execution via Pulse
• #339 - Add vertical PROMPT indicator for manual toggle
• #340 - Add loading state UI to prompt preview panel
• #341 - Make prompt preview provider configurable
• #342 - Add deterministic sampling option to prompt preview API
• #344 - Make filename optional for attestation-only prompts
• #345 - Clarify prompt execution result storage pattern
• #346 - Add context propagation to storage layer

Developer Workflow

1. Pick an issue from the lists above
2. Implement the feature in a branch
3. Update this README when done:
   • Move issue to ✅ Merged Work
   • Demonstrate the new capability in the prompt template above if applicable
4. Execute this README as a prompt to verify the documentation explains the feature

This README is itself an executable prompt - it should always accurately explain and demonstrate QNTX prompt capabilities.