optimize: improve build profile, CI, and remove redundant cpu sleeps

- Add release profile with LTO and stripping for smaller binaries
- Add Rust checks (fmt, clippy, test) to CI
- Remove redundant 200ms sleep in cpu monitoring for better continuous performance
- Fix dead code warnings in various modules

.github/workflows/ci.yml

@@ -59,3 +59,20 @@ jobs:
         # Exit-zero treats all errors as warnings
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
       continue-on-error: true
+
+  rust-checks:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Rust
+      uses: actions-rust-lang/setup-rust-toolchain@v1
+
+    - name: Check formatting
+      run: cargo fmt --all -- --check
+
+    - name: Run clippy
+      run: cargo clippy -- -D warnings
+
+    - name: Run tests
+      run: cargo test

Cargo.toml

@@ -16,3 +16,9 @@ log = "0.4"
 env_logger = "0.11"
 csv = "1.3"
 anyhow = "1.0"
+
+[profile.release]
+lto = true
+codegen-units = 1
+strip = true
+

src/alert.rs

@@ -8,6 +8,7 @@ pub struct AlertSystem {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct Alert {
     pub alert_type: String,
     pub message: String,
@@ -62,6 +63,7 @@ impl AlertSystem {
         println!("\n⚠️  ALERT: {}", message);
     }
 
+    #[allow(dead_code)]
     pub fn get_alert_history(&self) -> &[Alert] {
         &self.alert_history
     }

src/exporter.rs

@@ -1,3 +1,4 @@
+#![allow(dead_code)]
 use serde::Serialize;
 use std::fs;
 use std::path::PathBuf;

src/logger.rs

@@ -44,6 +44,7 @@ impl TrackerLogger {
         self.write_log("WARNING", &alert_message);
     }
 
+    #[allow(dead_code)]
     pub fn log_error(&self, error_message: &str) {
         let error_msg = format!("ERROR: {}", error_message);
         self.write_log("ERROR", &error_msg);

src/monitor.rs

@@ -32,8 +32,6 @@ impl SystemMonitor {
     }
 
     pub fn get_cpu_usage(&mut self) -> f32 {
-        self.sys.refresh_cpu_all();
-        std::thread::sleep(std::time::Duration::from_millis(200));
         self.sys.refresh_cpu_all();
         self.sys.global_cpu_usage()
     }
@@ -163,6 +161,7 @@ impl SystemMonitor {
 pub struct MemoryInfo {
     pub total: u64,
     pub used: u64,
+    #[allow(dead_code)]
     pub available: u64,
     pub percent: f32,
 }
@@ -171,6 +170,7 @@ pub struct MemoryInfo {
 pub struct DiskInfo {
     pub total: u64,
     pub used: u64,
+    #[allow(dead_code)]
     pub free: u64,
     pub percent: f32,
 }
@@ -179,6 +179,8 @@ pub struct DiskInfo {
 pub struct NetworkStats {
     pub bytes_sent: u64,
     pub bytes_recv: u64,
+    #[allow(dead_code)]
     pub packets_sent: u64,
+    #[allow(dead_code)]
     pub packets_recv: u64,
 }