refactor(create-expert): add error recovery guidance to expert templates

.changeset/add-error-recovery-guidance.md

@@ -0,0 +1,11 @@
+---
+"create-expert": patch
+---
+
+Add error recovery guidance to expert templates
+
+Added explicit error handling sections to:
+- Main Expert Template: Format for error messages with "To fix:" guidance
+- Setup Expert Template: Error handling with suggestion to run doctor expert
+
+Reinforces Design Principle #7: "All errors must include 'To fix: ...' guidance"

apps/create-expert/src/lib/create-expert-toml.ts

@@ -120,6 +120,11 @@ version = "1.0.0"
 description = "Brief description of main functionality"
 instruction = '''
 Your role and capabilities...
+
+## Error Handling
+When errors occur, provide actionable guidance:
+- "❌ Error: [what went wrong] | To fix: [specific steps]"
+- Never fail silently - always explain what happened and how to resolve it
 '''
 
 [experts."<name>".skills."@perstack/base"]
@@ -194,6 +199,11 @@ Help users configure required dependencies quickly and correctly.
 ## Success Output
 "✓ Setup complete! Try: npx perstack run <name> \\"your query\\""
 
+## Error Handling
+When setup fails, guide the user:
+- "❌ Failed: [what went wrong] | To fix: [specific steps]"
+- Suggest running the doctor expert for diagnostics
+
 ## Required Dependencies
 [List the specific dependencies this expert needs]
 '''