Fix missing or redundant headers.

Author: ryouze

src/app.cpp

@@ -2,7 +2,8 @@
  * @file app.cpp
  */
 
-#include <string>  // for std::string
+#include <stdexcept>  // for std::runtime_error
+#include <string>     // for std::string
 
 #include <fmt/color.h>
 #include <fmt/core.h>

src/core/env.cpp

@@ -2,8 +2,9 @@
  * @file env.cpp
  */
 
-#include <cstdlib>  // for std::getenv
-#include <string>   // for std::string
+#include <cstdlib>    // for std::getenv
+#include <stdexcept>  // for std::runtime_error
+#include <string>     // for std::string
 
 #include <fmt/core.h>
 

src/core/env.hpp

@@ -6,8 +6,7 @@
 
 #pragma once
 
-#include <stdexcept>  // for std::runtime_error
-#include <string>     // for std::string
+#include <string>  // for std::string
 
 namespace core::env {
 

src/core/shell.cpp

@@ -2,10 +2,11 @@
  * @file shell.cpp
  */
 
-#include <array>   // for std::array
-#include <cstdio>  // for popen, pclose, FILE, fgets
-#include <memory>  // for std::unique_ptr
-#include <string>  // for std::string
+#include <array>      // for std::array
+#include <cstdio>     // for popen, pclose, FILE, fgets
+#include <memory>     // for std::unique_ptr
+#include <stdexcept>  // for std::runtime_error
+#include <string>     // for std::string
 
 #include <fmt/core.h>
 

src/core/shell.hpp

@@ -6,8 +6,7 @@
 
 #pragma once
 
-#include <stdexcept>  // for std::runtime_error
-#include <string>     // for std::string
+#include <string>  // for std::string
 
 namespace core::shell {
 

src/modules/cpu.cpp

@@ -2,7 +2,8 @@
  * @file cpu.cpp
  */
 
-#include <string>  // for std::string
+#include <stdexcept>  // for std::runtime_error
+#include <string>     // for std::string
 
 #include <fmt/core.h>
 

src/modules/host.cpp

@@ -5,6 +5,7 @@
 #include <array>          // for std::array
 #include <cstddef>        // for std::size_t
 #include <exception>      // for std::exception
+#include <stdexcept>      // for std::runtime_error
 #include <string>         // for std::string, std::stoi, std::to_string
 #include <sys/sysctl.h>   // for sysctl
 #include <sys/time.h>     // for timeval, time_t, time, difftime