fix(config): correct Claude prompt prefix from > to ❯ (#765)

The WaitForRuntimeReady function was looking for "> " to detect
when Claude is ready, but Claude Code uses "❯" (U+276F) as its
prompt character. This caused refineries to timeout during startup.

Fixes #763

Executed-By: mayor
Role: mayor

internal/config/types.go

@@ -552,7 +552,8 @@ func defaultProcessNames(provider, command string) []string {
 
 func defaultReadyPromptPrefix(provider string) string {
 	if provider == "claude" {
-		return "> "
+		// Claude Code uses ❯ (U+276F) as the prompt character
+		return "❯ "
 	}
 	return ""
 }