fix: make server/database config optional (worker only needs llm)

src/lib.rs

@@ -31,8 +31,10 @@ pub struct Config {
     /// LLM config is optional on the server — workers bring their own.
     #[serde(default)]
     pub llm: Option<LlmConfig>,
-    pub server: ServerConfig,
-    pub database: DatabaseConfig,
+    #[serde(default)]
+    pub server: Option<ServerConfig>,
+    #[serde(default)]
+    pub database: Option<DatabaseConfig>,
     #[serde(default)]
     pub template_repo: Option<TemplateRepoConfig>,
     /// Path to EC private key PEM file for JWT signing

src/main.rs

@@ -66,7 +66,8 @@ async fn run_server() -> anyhow::Result<()> {
     let config: Config = serde_yaml::from_str(&config_str)
         .expect("Failed to parse config.yaml");
 
-    let database = db::Database::new(&config.database.path).await?;
+    let db_config = config.database.as_ref().expect("database config required for server mode");
+    let database = db::Database::new(&db_config.path).await?;
     database.migrate().await?;
 
     let kb_arc = match kb::KbManager::new(database.pool.clone()) {
@@ -171,7 +172,8 @@ async fn run_server() -> anyhow::Result<()> {
         }))
         .layer(CorsLayer::permissive());
 
-    let addr = format!("{}:{}", &config.server.host, config.server.port);
+    let srv = config.server.as_ref().expect("server config required for server mode");
+    let addr = format!("{}:{}", &srv.host, srv.port);
     tracing::info!("Tori server listening on {}", addr);
     let listener = tokio::net::TcpListener::bind(&addr).await?;
     axum::serve(listener, app).await?;