fix: resolve overlapping route and deprecated base64 decode usage

Co-authored-by: aider (openai/andrew/openrouter/anthropic/claude-sonnet-4) <aider@aider.chat>

src/modes/server/api/item.rs

@@ -130,7 +130,7 @@ pub async fn handle_list_items(
     )
 )]
 pub async fn handle_post_item(
-    State(state): State<AppState>,
+    State(_state): State<AppState>,
 ) -> Result<Json<ApiResponse<ItemInfo>>, StatusCode> {
     
     // This is a simplified implementation

src/modes/server/api/mod.rs

@@ -16,7 +16,6 @@ use utoipa_swagger_ui::SwaggerUi;
         status::handle_status,
         item::handle_list_items,
         item::handle_post_item,
-        item::handle_delete_item,
         item::handle_get_item_latest,
         item::handle_get_item_latest_meta,
         item::handle_get_item_latest_content,
@@ -55,7 +54,4 @@ pub fn add_routes(router: Router<AppState>) -> Router<AppState> {
 pub fn add_docs_routes(router: Router<AppState>) -> Router<AppState> {
     router
         .merge(SwaggerUi::new("/swagger").url("/openapi.json", ApiDoc::openapi()))
-        .route("/openapi.json", axum::routing::get(|| async {
-            axum::Json(ApiDoc::openapi())
-        }))
 }

src/modes/server/api/status.rs

@@ -3,7 +3,6 @@ use axum::{
     http::StatusCode,
     response::Json,
 };
-use log::warn;
 
 use crate::modes::server::common::{AppState, ApiResponse};
 use crate::common::status::{generate_status_info, StatusInfo};