refactor: get rid of extern runner thread id

src/btop.cpp

@@ -124,6 +124,10 @@ namespace Global {
 	atomic<bool> reload_conf (false);
 }
 
+namespace Runner {
+	static pthread_t runner_id;
+} // namespace Runner
+
 //* Handler for SIGWINCH and general resizing events, does nothing if terminal hasn't been resized unless force=true
 void term_resize(bool force) {
 	static atomic<bool> resizing (false);
@@ -355,7 +359,7 @@ namespace Runner {
 	atomic<bool> waiting (false);
 	atomic<bool> redraw (false);
 	atomic<bool> coreNum_reset (false);
-	
+
 	static inline auto set_active(bool value) noexcept {
 		active.store(value, std::memory_order_relaxed);
 		active.notify_all();
@@ -408,7 +412,6 @@ namespace Runner {
 	string empty_bg;
 	bool pause_output{};
 	sigset_t mask;
-	pthread_t runner_id;
 	pthread_mutex_t mtx;
 
 	enum debug_actions {

src/btop_shared.hpp

@@ -76,13 +76,11 @@ namespace Runner {
 	extern atomic<bool> stopping;
 	extern atomic<bool> redraw;
 	extern atomic<bool> coreNum_reset;
-	extern pthread_t runner_id;
 	extern bool pause_output;
 	extern string debug_bg;
 
-	void run(const string& box="", bool no_update = false, bool force_redraw = false);
+	void run(const string& box = "", bool no_update = false, bool force_redraw = false);
 	void stop();
-
 }
 
 namespace Tools {

src/btop_tools.hpp

@@ -29,7 +29,6 @@ tab-size = 4
 #include <cstdint>
 #include <filesystem>
 #include <limits.h>
-#include <pthread.h>
 #include <ranges>
 #include <regex>
 #include <string>