Add mobile app research signals

[skiffer]

Skill Improvement

Summary

Adds mobile app-specific research guidance to the startup-design and startup-competitors competitor research templates. For iOS/mobile app ideas, the templates now point agents to App Store listings, category/keyword results, and ASO intelligence tools, with AppNiche free revenue and keyword checkers as directional signals that must be cross-checked against public App Store data.

Disclosure: I work on GetAppNiche.

Type of change

• Improved instructions
• Research agent improvements

Checklist

• SKILL.md is under 500 lines (not changed)
• YAML frontmatter is valid (not changed)
• No sensitive data or credentials
• Tested locally with AI agent
• Changes are focused and minimal

Validation:

• git diff --check
• Checked both linked AppNiche tool URLs return HTTP 200