fix: remove unused imports and update method signatures

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

src/meta_plugin.rs

@@ -1,6 +1,7 @@
 use anyhow::Result;
 use log::debug;
 use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
 
 pub mod program;
 pub mod digest;

src/meta_plugin/binary.rs

@@ -1,9 +1,9 @@
 use anyhow::Result;
 use rusqlite::Connection;
-
 use crate::common::is_binary::is_binary;
 use crate::common::PIPESIZE;
-use crate::meta_plugin::MetaPlugin;
+use crate::meta_plugin::{MetaPlugin, MetaPluginResponse, MetaData};
+use std::collections::HashMap;
 
 #[derive(Debug, Clone, Default)]
 pub struct BinaryMetaPlugin {
@@ -61,20 +61,6 @@ impl BinaryMetaPlugin {
         Self::new(None, None)
     }
     
-    fn save_metadata(&mut self, conn: &Connection) -> Result<()> {
-        if !self.is_saved {
-            if let Some(item_id) = self.item_id {
-                let is_binary_result = is_binary(&self.buffer);
-                let value = if is_binary_result { "true".to_string() } else { "false".to_string() };
-                
-                // Save to database immediately using central output handler
-                let _ = self.save_meta(conn, item_id, "binary", value);
-                
-                self.is_saved = true;
-            }
-        }
-        Ok(())
-    }
 }
 
 impl MetaPlugin for BinaryMetaPlugin {
@@ -82,26 +68,31 @@ impl MetaPlugin for BinaryMetaPlugin {
         true
     }
 
-    fn finalize(&mut self) -> Result<MetaPluginResponse> {
+    fn finalize(&mut self) -> MetaPluginResponse {
         let mut metadata = Vec::new();
 
         // Save the binary detection result when finalizing, if not already saved
-        if let Some(item_id) = self.item_id {
+        if let Some(_item_id) = self.item_id {
             let is_binary_result = is_binary(&self.buffer);
             let value = if is_binary_result { "true".to_string() } else { "false".to_string() };
 
-            if let Some(meta) = self.create_meta(item_id, "binary", value) {
-                metadata.push(meta);
+            // Use process_metadata_outputs to handle output mapping
+            if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+                "binary", 
+                value, 
+                &self.outputs
+            ) {
+                metadata.push(meta_data);
             }
         }
 
-        Ok(MetaPluginResponse {
-            metadata: Some(metadata),
+        MetaPluginResponse {
+            metadata,
             is_finalized: true,
-        })
+        }
     }
 
-    fn update(&mut self, data: &[u8]) -> Result<MetaPluginResponse> {
+    fn update(&mut self, data: &[u8]) -> MetaPluginResponse {
         // Calculate how much data we can still accept
         let remaining_capacity = self.max_buffer_size.saturating_sub(self.buffer.len());
         if remaining_capacity > 0 {
@@ -115,29 +106,36 @@ impl MetaPlugin for BinaryMetaPlugin {
         // If we've reached our buffer limit, return metadata
         let mut metadata = Vec::new();
         if self.buffer.len() >= self.max_buffer_size {
-            if let Some(item_id) = self.item_id {
+            if let Some(_item_id) = self.item_id {
                 let is_binary_result = is_binary(&self.buffer);
                 let value = if is_binary_result { "true".to_string() } else { "false".to_string() };
 
-                if let Some(meta) = self.create_meta(item_id, "binary", value) {
-                    metadata.push(meta);
+                // Use process_metadata_outputs to handle output mapping
+                if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+                    "binary", 
+                    value, 
+                    &self.outputs
+                ) {
+                    metadata.push(meta_data);
                 }
             }
         }
 
-        Ok(MetaPluginResponse {
-            metadata: if metadata.is_empty() { None } else { Some(metadata) },
+        MetaPluginResponse {
+            metadata,
             is_finalized: !metadata.is_empty(),
-        })
+        }
     }
 
     fn meta_name(&self) -> String {
         self.meta_name.clone()
     }
 
-    fn initialize(&mut self, item_id: i64) -> Result<MetaPluginResponse> {
-        self.item_id = Some(item_id);
-        Ok(MetaPluginResponse::default())
+    fn initialize(&mut self) -> MetaPluginResponse {
+        MetaPluginResponse {
+            metadata: Vec::new(),
+            is_finalized: false,
+        }
     }
     
     fn configure_options(&mut self, options: &std::collections::HashMap<String, serde_yaml::Value>) -> Result<()> {

src/meta_plugin/system.rs

@@ -1,13 +1,10 @@
 use anyhow::Result;
 use gethostname::gethostname;
-use local_ip_address::local_ip;
-use dns_lookup::lookup_addr;
 use std::env;
 use std::process;
-use uzers::{get_current_uid, get_current_gid, get_current_username, get_current_groupname};
-use rusqlite::Connection;
-
-use crate::meta_plugin::MetaPlugin;
+use uzers::{get_current_uid, get_current_gid, get_user_by_uid, get_group_by_gid};
+use crate::meta_plugin::{MetaPlugin, MetaPluginResponse, MetaData};
+use std::collections::HashMap;
 
 #[derive(Debug, Clone, Default)]
 pub struct CwdMetaPlugin {