feat: add private day, history and reminder command graphics

src/discord/README.md

@@ -107,3 +107,25 @@ sudo docker compose exec -T app bun scripts/register-discord-commands.ts --apply
 Registration upserts individual global commands and preserves unrelated commands.
 The public key and interactions URL are one-time setup; adding commands requires
 rerunning registration after their handlers have deployed.
+
+## Additional command graphics
+
+`/today` includes **View day card**, summarizing all due habits in pages of six.
+The selected daily check-in and `/history` editor include **View check-in card**,
+showing the selected date's requirements, task completion, carryover where
+applicable, and a 14-day progress strip ending on that date. `/reminders` includes
+**View schedule card**, showing each time slot, weekday/date schedule, quiet-hour
+conflicts, and delivery status. Schedule cards retain disabled/unavailable states.
+Management forms and `/help` remain text-based because their controls already
+communicate the relevant choices.
+
+These are private snapshots: **Refresh card**, **Toggle theme**, and pagination
+request a fresh owned snapshot. Regular check-ins keep their existing immediate
+text responses. Graphic actions acknowledge before rendering and attach a PNG to
+a new private reply; they never publish to the sharing channel or write progress.
+Each image has a text equivalent and attachment description. A render failure
+retains the text and navigation. No new command registration or configuration is
+needed after deploying this change.
+
+Generate local visual review artifacts with
+`COMMAND_IMAGE_REVIEW_DIR=/tmp/minabot-command-review bun test src/discord/command-graphics.test.ts`.