feat: Add directory size calculation and display for each try in the UI

try.rb

@@ -259,6 +259,30 @@ def load_all_tries
     # Load trials only once - single pass through directory
     @all_tries ||= begin
       tries = []
+
+      # Pre-calculate sizes for all directories in one go for performance
+      sizes = {}
+      begin
+        require 'shellwords'
+
+        # Use -k for consistent numeric output (kilobytes), faster parsing
+        du_output = `du -k -d 1 #{Shellwords.escape(@base_path)} 2>/dev/null`
+
+        du_output.each_line do |line|
+          parts = line.strip.split("\t")
+          size_kb = parts[0]
+          path = parts[1]
+
+          next if path.nil? || path.empty?
+
+          basename = File.basename(path)
+          # Convert KB to human-readable format
+          sizes[basename] = format_size(size_kb.to_i * 1024)
+        end
+      rescue
+        # Silent fail
+      end
+
       Dir.foreach(@base_path) do |entry|
         # exclude . and .. but also .git, and any other hidden dirs.
         next if entry.start_with?('.')
@@ -276,7 +300,8 @@ def load_all_tries
           path: path,
           is_new: false,
           ctime: stat.ctime,
-          mtime: stat.mtime
+          mtime: stat.mtime,
+          size: sizes[entry] || "???"
         }
       end
       tries
@@ -555,7 +580,8 @@ def render(tries)
         # Calculate metadata
         time_text = format_relative_time(try_dir[:mtime])
         score_text = sprintf("%.1f", try_dir[:score])
-        meta_text = "#{time_text}, #{score_text}"
+        size_text = try_dir[:size]
+        meta_text = "#{time_text}, #{size_text}, #{score_text}"
         meta_width = meta_text.length + 1  # +1 for leading space
 
         # Layout: "→ 📁 name                    meta" or "  📁 name..."
@@ -678,6 +704,22 @@ def render(tries)
     UI.flush
   end
 
+  def format_size(bytes)
+    return "0B" if bytes.zero?
+
+    units = ['B', 'K', 'M', 'G', 'T']
+    exp = (Math.log(bytes) / Math.log(1024)).to_i
+    exp = [exp, units.length - 1].min
+
+    size = bytes / (1024.0 ** exp)
+
+    if exp.zero?
+      "#{bytes}B"
+    else
+      "#{size.round(1)}#{units[exp]}"
+    end
+  end
+
 
   def format_relative_time(time)
     return "?" unless time
@@ -1378,3 +1420,4 @@ def worktree_path(tries_path, repo_dir, custom_name)
   end
 
 end
+