chore(claude-do): Normalize list ID format

list_task_lists returns two different ID formats: dashed UUIDs (e.g. "caed660e-109f-4e2a-b055-2c2722bf6fb7") and compact 32-char hex (e.g. "5c2cafcb33f044069ac324ac3fd84a16"). Mixing formats makes equality checks, logging, and lookups error-prone.

Fix: pick one canonical format (recommend dashed UUID) and normalize on write + migrate existing records. Ensure all ID-returning tools emit the same f

ClaudeDo-Task: fa8b69e0-6f8d-41d7-9a41-88db1360544d

src/ClaudeDo.Data/Seeding/DefaultListsSeeder.cs

@@ -15,7 +15,7 @@ public static class DefaultListsSeeder
         {
             ctx.Lists.Add(new ListEntity
             {
-                Id = Guid.NewGuid().ToString("N"),
+                Id = Guid.NewGuid().ToString(),
                 Name = name,
                 CreatedAt = now,
             });