Refactor core APIs, fix bugs, and improve safety

- Make image result/info structs readonly; improve error handling and memory safety in image library
- Introduce IJobScheduler interface; move job scheduling docs to interface
- Remove "index 0 invalid" convention from slot/sparse maps; fix Count logic
- Add Owner<T> for disposable value types in low-level utilities
- Improve ObjectPool<T> thread safety and logic
- Change List<T>.RemoveAndSwapBack to return bool
- Remove unsafe methods from generated math types; add debug range checks
- Update benchmarks and enable collection checks in tests
- Improve documentation, comments, and error messages
- Bump assembly versions across all projects

Misaki.HighPerformance.Image/Runtime/CRuntime.cs

@@ -24,7 +24,9 @@ internal static unsafe class CRuntime
     public static void free(void* ptr)
     {
         if (ptr == null)
+        {
             return;
+        }
 
         NativeMemory.Free(ptr);
         MemoryStats.Freed();
@@ -54,7 +56,9 @@ internal static unsafe class CRuntime
         finally
         {
             if (temp != null)
+            {
                 free(temp);
+            }
         }
     }
 
@@ -66,7 +70,9 @@ internal static unsafe class CRuntime
         for (long i = 0; i < size; ++i)
         {
             if (*ap != *bp)
+            {
                 result += 1;
+            }
 
             ap++;
             bp++;
@@ -80,7 +86,9 @@ internal static unsafe class CRuntime
         var bptr = (byte*)ptr;
         var bval = (byte)value;
         for (long i = 0; i < size; ++i)
+        {
             *bptr++ = bval;
+        }
     }
 
     public static void memset(void* ptr, int value, ulong size)
@@ -96,7 +104,9 @@ internal static unsafe class CRuntime
     public static void* realloc(void* ptr, long newSize)
     {
         if (ptr == null)
+        {
             return malloc(newSize);
+        }
 
         var result = NativeMemory.Realloc(ptr, (nuint)newSize);