Minor fixes after the merge

Deleting some duplicate functions and header

platform.c

@@ -10,7 +10,6 @@
 // xxhash include
 #define XXH_STATIC_LINKING_ONLY
 #include "xxh_x86dispatch.h"
-#include <ctype.h>
 
 #include "config.h"
 // ----------------------------- Globals ------------------------------------
@@ -71,7 +70,6 @@ double timer_elapsed(HiResTimer *t) {
 
 // ------------------- Get HW info --------------------
 #if defined(_WIN32) || defined(_WIN64)
-
 size_t platform_physical_cores(void) {
   DWORD len = 0;
   GetLogicalProcessorInformation(NULL, &len);
@@ -89,12 +87,10 @@ size_t platform_physical_cores(void) {
 }
 
 #elif defined(__linux__)
-
 size_t platform_physical_cores(void) {
   long n = sysconf(_SC_NPROCESSORS_ONLN);
   return n > 0 ? (size_t)n : 1;
 }
-
 #endif
 
 const char *get_xxhash_instruction_set(void) {
@@ -173,7 +169,6 @@ static int os_file_read(FileHandle handle, void *buf, size_t count,
 
 // File close function
 static void os_file_close(FileHandle handle) { close(handle); }
-
 #endif
 
 // -------------------- Thread abstraction -------------------
@@ -292,7 +287,6 @@ static int thread_wait_multiple(Thread *threads, size_t count) {
   }
   return 0;
 }
-
 #endif
 
 // ======================== Get file metadata ========================
@@ -739,39 +733,6 @@ void scan_folder(const char *base, ScannerContext *ctx) {
 }
 
 #elif defined(__linux__)
-static int platform_get_file_times_fd(int dir_fd, const char *name,
-                                      time_t *created, time_t *modified) {
-  struct stat st;
-  if (fstatat(dir_fd, name, &st, 0) == 0) {
-    *created = st.st_ctime; // or st.st_birthtime on systems that support it
-    *modified = st.st_mtime;
-    return 0;
-  }
-  return -1;
-}
-
-static int platform_get_file_owner_fd(int dir_fd, const char *name, char *owner,
-                                      size_t owner_size) {
-  struct stat st;
-  if (fstatat(dir_fd, name, &st, 0) == 0) {
-    struct passwd pw;
-    struct passwd *result;
-    char buffer[4096]; // Sufficiently large buffer for passwd data
-    
-    // Reentrant version (thread-safe)
-    if (getpwuid_r(st.st_uid, &pw, buffer, sizeof(buffer), &result) == 0 && 
-        result != NULL && result->pw_name != NULL) {
-      strncpy(owner, result->pw_name, owner_size - 1);
-      owner[owner_size - 1] = '\0';
-    } else {
-      // Fallback to uid
-      snprintf(owner, owner_size, "uid:%d", st.st_uid);
-    }
-    return 0;
-  }
-  return -1;
-}
-
 void scan_folder(const char *base, ScannerContext *ctx) {
   PathBuilder pb;
   path_builder_init(&pb, base);
@@ -903,7 +864,6 @@ void scan_folder(const char *base, ScannerContext *ctx) {
 
   closedir(dir);
 }
-
 #endif
 
 // ------------------------- Scan worker --------------------------------
@@ -1098,7 +1058,6 @@ typedef struct {
 typedef IoUring *IoRingHandle;
 typedef struct iovec IORING_BUFFER_INFO;
 #define BUILD_READ_RETURN_VALUE int
-
 #endif
 
 typedef struct FileReadContext {
@@ -1671,7 +1630,6 @@ FileHandle ioring_open_file(FileEntry *fe) {
   }
   return handle;
 }
-
 #endif
 
 // OS-agnostic helper macros