fix: Add missing filter_plugins field and implement get_available_filter_plugins

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/services/status_service.rs

@@ -2,7 +2,7 @@ use crate::common::status::{generate_status_info, StatusInfo};
 use crate::config::Settings;
 use crate::meta_plugin::MetaPluginType;
 use crate::compression_engine::CompressionType;
-use crate::filter_plugin;
+use crate::services::filter_service::get_available_filter_plugins;
 use clap::Command;
 use std::path::PathBuf;
 use std::str::FromStr;