Write detailed use case descriptions for Platform Mastery AI Agents, organized by buyer persona: 1. **Solo Developer**: How does the agent help when stuck on a Stripe webhook or AWS IAM policy? 2. **Agency Owner**: How does it help manage 50+ client accounts across Salesforce/GHL/HubSpot? 3. **Enterprise Admin**: How does it reduce support tickets and onboarding time? 4. **Platform Vendor**: How does it improve developer adoption and reduce support costs? 5. **Non-Technical Business Owner**: How does it let them self-serve on Shopify/WordPress without hiring devs? For each: 200-word narrative, specific example, quantified benefit, quote-ready testimonial template.