Add the calendar view (M10)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## Unreleased
+
+- **Calendar (F5):** two weeks of movie releases and airing episodes grouped by day, with poster,
+  plot, release search and automatic search. The Log moves to F6.
+- **Download notifications:** popup and log entry when a SABnzbd download finishes or fails, in the
+  background (`ui.notify_downloads`, optional `ui.bell`).
+- **Remove from the library** (`d`), with separate checkboxes for deleting the files and for the
+  import exclusion; both off by default.
+- On narrow terminals the connection indicators shrink to initials.
+
 ## v0.1.0
 
 First release.
@@ -17,7 +27,7 @@ First release.
 - **Downloads:** SABnzbd queue and history plus the Radarr and Sonarr queues; pause/resume, delete,
   retry, remove and blocklist.
 - **Posters:** a thumbnail at the top right of the detail panes with the text flowing around it (quadrant or, on capable terminals, sextant block rendering; `ui.cover_style`).
-- **Log (F5) and popups:** feedback appears as fading popups; the log keeps the history.
+- **Log (F6) and popups:** feedback appears as fading popups; the log keeps the history.
 - Connection indicators for all three services, context-sensitive key hints, `?` help.
 - JSON config with environment overrides (`ARR_TUI_*`), `--version`, cross-platform builds
   (`make dist`).