build(todo): listed in F-Droid as Task and Calendar & Agenda

F-Droid's Time is for clocks and timers; a to-do list with a calendar
belongs under Task and Calendar & Agenda, the developer's choice of
both. No other app used Time, so the repository no longer lists it. The
release test now checks every category the listing names. ADR 0033 gets
D26 (the review's fixes so far) and D27.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

tool/release/fdroid/config/categories.yml

@@ -1,7 +1,9 @@
 # The categories the repository's apps are listed in.
+Calendar & Agenda:
+  name: Calendar & Agenda
 Education:
   name: Education
 Sports & Health:
   name: Sports & Health
-Time:
-  name: Time
+Task:
+  name: Task

tool/release/fdroid/metadata/app.halkyon.todo.yml

@@ -2,7 +2,8 @@
 # (apps/todo/snap/snapcraft.yaml), and its anti-feature with its reason (ADR 0033,
 # step 5).
 Categories:
-  - Time
+  - Task
+  - Calendar & Agenda
 License: AGPL-3.0-or-later
 AuthorName: Halkyon
 AuthorEmail: support@halkyon.app