Feature: preview mode — show what would be built without running

[Rishiidev]

The idea

Add a preview trigger that shows a structured plan of exactly what the agent will build — without actually running the pipeline or creating any files.

Example output

github-launch-agent — PREVIEW MODE
────────────────────────────────────────
Project detected: my-cli-tool (Python, MIT)

What will be built:
  README.md         hero SVG + competitor-benchmarked structure
  CHANGELOG.md      v1.0.0, today's date
  CONTRIBUTING.md   standard open-source contribution guide
  SECURITY.md       vulnerability reporting via GitHub Issues
  .gitignore        Python-specific
  docs/index.html   GitHub Pages landing page
  assets/social-preview.svg

GitHub operations:
  create repo       my-cli-tool (public)
  set description   [top-scored from 5 candidates]
  set topics        up to 20 SEO topics
  enable Pages      → your-username.github.io/my-cli-tool
  enable Discussions
  create labels     5 custom labels
  create release    v1.0.0

Distribution output:
  Reddit post       r/ClaudeAI
  X/Twitter thread  4 tweets
  HN Show HN        title + body
  LinkedIn post
  Product Hunt copy
  DEV.to article
  7-day calendar

Type "agentic github launch" to run.

Why this is useful

• Lets users verify the plan before any files are written or API calls made
• Reduces anxiety for first-time users
• Great for demos and screenshots

Trigger phrase candidates

• preview github launch
• dry run github launch
• what would github launch do

How to contribute

Edit skills/github-launch-agent/SKILL.md to add a preview branch that reads project files and outputs the structured plan without calling any write tools.