fix: resolve clippy warnings for CI

Author: ZhiXiao-Lin

core/src/agent_api.rs

@@ -50,7 +50,7 @@ pub struct ToolCallResult {
 // ============================================================================
 
 /// Optional per-session overrides.
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub struct SessionOptions {
     /// Override the default model. Format: `"provider/model"` (e.g., `"openai/gpt-4o"`).
     pub model: Option<String>,
@@ -208,23 +208,6 @@ impl SessionOptions {
     }
 }
 
-impl Default for SessionOptions {
-    fn default() -> Self {
-        Self {
-            model: None,
-            agent_dirs: Vec::new(),
-            queue_config: None,
-            security_provider: None,
-            context_providers: Vec::new(),
-            confirmation_manager: None,
-            permission_checker: None,
-            planning_enabled: false,
-            goal_tracking: false,
-            skill_registry: None,
-        }
-    }
-}
-
 // ============================================================================
 // Agent
 // ============================================================================

core/src/memory.rs

@@ -247,6 +247,7 @@ pub trait MemoryStore: Send + Sync {
 // ============================================================================
 
 /// Sort memory items by relevance score (highest first)
+#[allow(dead_code)]
 fn sort_by_relevance(items: &mut [MemoryItem]) {
     let now = Utc::now();
     items.sort_by(|a, b| {

core/src/prompts.rs

@@ -48,6 +48,7 @@ pub const CONTEXT_SUMMARY_PREFIX: &str =
 // ============================================================================
 
 /// User template for session title generation. Placeholder: `{conversation}`
+#[allow(dead_code)]
 pub const TITLE_GENERATE: &str = include_str!("../prompts/title_generate.md");
 
 // ============================================================================

core/src/tools/builtin/web_search.rs

@@ -153,7 +153,7 @@ impl Tool for WebSearchTool {
         if let Some(url) = proxy_url {
             // Parse proxy URL into ProxyConfig
             if let Some(config) = parse_proxy_url(url) {
-                let pool = ProxyPool::with_proxies(vec![config]);
+                let _pool = ProxyPool::with_proxies(vec![config]);
                 // TODO: a3s-search API changed, need to update
                 // search.set_proxy_pool(pool);
                 tracing::warn!("Proxy configuration is temporarily disabled due to API changes");