Upgrade to latest dexto fails due to breaking config validation in existing ~/.dexto

[RajeshKumarS]

Upgrading to the latest dexto via npm i -g dexto results in a configuration validation failure on startup:

dexto
13:27:30 ERROR: Agent config validation error: {"issues":[{"code":"invalid_union","unionErrors":[{"issues":[{"code":"invalid_type","expected":"string","received":"object","path":["systemPrompt"],"message":"Expected string, received object"}],"name":"ZodError"},{"issues":[{"code":"invalid_union_discriminator","options":["static","dynamic","file"],"path":["systemPrompt","contributors",2,"type"],"message":"Invalid contributor type. Expected 'static', 'dynamic', or 'file'. Note: memory contributors are now configured via the top-level 'memories' config."}],"name":"ZodError"}],"path":["systemPrompt"],"message":"Invalid input"},{"received":"event-based","code":"invalid_enum_value","options":["manual","auto-approve","auto-deny"],"path":["toolConfirmation","mode"],"message":"Invalid enum value. Expected 'manual' | 'auto-approve' | 'auto-deny', received 'event-based'"},{"code":"unrecognized_keys","keys":["starterPrompts"],"path":[],"message":"Unrecognized key(s) in object: 'starterPrompts'"}],"name":"ZodError"}
❌ Configuration Error:
• systemPrompt: Invalid input
• toolConfirmation.mode: Invalid enum value. Expected 'manual' | 'auto-approve' | 'auto-deny', received 'event-based'
• config: Unrecognized key(s) in object: 'starterPrompts'

After deleting ~/.dexto, reinstalled dexto. It started working normally.

[linear]

TRU-221