✨ Able to get post reactions list

DysonNetwork.Sphere/Post/PostController.cs

@@ -151,6 +151,30 @@ public class PostController(
         return Ok(posts);
     }
 
+    [HttpGet("{id:guid}/reactions")]
+    public async Task<ActionResult<List<PostReaction>>> GetReactions(
+        Guid id,
+        [FromQuery] string? symbol = null,
+        [FromQuery] int offset = 0,
+        [FromQuery] int take = 20
+    )
+    {
+        var query = db.PostReactions
+            .Where(e => e.PostId == id);
+        if (symbol is not null) query = query.Where(e => e.Symbol == symbol);
+        
+        var totalCount = await query.CountAsync();
+        Response.Headers.Append("X-Total", totalCount.ToString());
+        
+        var reactions = await query
+            .OrderBy(r => r.Symbol)
+            .ThenByDescending(r => r.CreatedAt)
+            .Take(take)
+            .Skip(offset)
+            .ToListAsync();
+        return Ok(reactions);
+    }
+
     [HttpGet("{id:guid}/replies/featured")]
     public async Task<ActionResult<Post>> GetFeaturedReply(Guid id)
     {