Expand coffee spinner to 8 frames with brewing story progression

Grinding → Heating → Brewing tells a coffee-making story across
the animation cycle. All frames remain equal width (10 chars after
the coffee emoji) to prevent progress bar jitter.

https://claude.ai/code/session_01LEre156k3sMntSx8uGDXRj

Author: claude

Runner/ProgramRunner.Config.cs

@@ -154,6 +154,10 @@ private static void ApplyCliOverrides(ConfigSettingsBuilder builder, CliOptions
                 // All frames are padded to equal width to prevent progress bar jitter / 全フレームを同じ幅に揃えてプログレスバーのガタつきを防止
                 builder.SpinnerFrames = new System.Collections.Generic.List<string>
                 {
+                    "☕ Grinding  ",
+                    "☕ Grinding..",
+                    "☕ Heating   ",
+                    "☕ Heating...",
                     "☕ Brewing   ",
                     "☕ Brewing.  ",
                     "☕ Brewing.. ",