refactor(core): remove provider module, migrate to LLMProvider, add client mode handling, improve serialization error handling, update workspace edition, and clean up conditionals and imports

crates/owlen-core/src/validation.rs

@@ -2,7 +2,7 @@ use std::collections::HashMap;
 
 use anyhow::{Context, Result};
 use jsonschema::{JSONSchema, ValidationError};
-use serde_json::{json, Value};
+use serde_json::{Value, json};
 
 pub struct SchemaValidator {
     schemas: HashMap<String, JSONSchema>,