Release v2.20.1 (#288)

Release 2.20.1.

**Fixed**

- "No calendars configured" offered an "Open system calendar settings" button that opened nothing — every screen wired it to the same reload that had just produced the empty state. It now opens the system's account chooser, filtered to the providers that sync calendars ([#239]).
- A device whose calendars are all switched off no longer looks like an empty month. The app only ever checked whether the device had *no* calendars, so calendars hidden at system level fell through to a blank grid with no hint. That case now says so and points at Settings → Calendars. The navigation drawer's calendar list drew the same conflation and is fixed with it ([#239]).

**Beyond the issue**

Two things in here aren't part of #239:

- `fastlane/metadata/android/en-US/changelogs/22001.txt` carries the 2.20.0 notes as well as 2.20.1's. The 2.20.0 Play upload failed on a service-account permission (it lacked "Release to production"; 2.19.4 failed the same way), so Play is still on 2.19.3 and users jump straight to 2.20.1. Left alone they would have seen only the 2.20.1 bugfixes and never heard about the hour grid, copyable event fields or invitation outlines. 402 characters, inside Play's 500 limit. The permission has since been granted, so this release should be the one that lands.
- A merge of `main` into the branch. `main` took 2.20.0 as a squash, so the two had no common ancestor past 2.19.4 and this PR would otherwise have replayed all 74 files of 2.20.0. Resolved to the branch throughout; the tree is byte-for-byte unchanged by it.

Closes #239.

Co-authored-by: Jean-Luc Makiola <business@jeanlucmakiola.de>
Reviewed-on: https://codeberg.org/jlmakiola/calendula/pulls/288

CHANGELOG.md

@@ -5,6 +5,23 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.20.1] — 2026-09-07
+
+### Fixed
+- **An empty calendar now explains itself.** "No calendars configured" offered
+  an "Open system calendar settings" button that opened nothing — every screen
+  wired it to the same reload that had just produced the empty state. It now
+  opens the system's account chooser, filtered to the providers that sync
+  calendars ([#239]).
+- **Calendars that are all switched off no longer look like an empty month.**
+  When every calendar on the device is hidden at system level there is nothing
+  to draw, but the app said nothing at all: it only ever checked whether the
+  device had *no* calendars, so a device that had them and hid them fell
+  through to a blank grid with no hint. That case now says so, and points at
+  Settings → Calendars — the one screen that can switch a calendar back on. The
+  navigation drawer's calendar list drew the same conflation and is fixed with
+  it ([#239]).
+
 ## [2.20.0] — 2026-09-07
 
 ### Added
@@ -1654,3 +1671,4 @@ automatically, with zero telemetry and no internet permission.
 [#150]: https://codeberg.org/jlmakiola/calendula/issues/150
 [#146]: https://codeberg.org/jlmakiola/calendula/issues/146
 [#267]: https://codeberg.org/jlmakiola/calendula/issues/267
+[#239]: https://codeberg.org/jlmakiola/calendula/issues/239