Release 0.5.4: remembered view, Auto theme, Currently Listening

- Remember the feed/place and tab across a reload or new visit; an
  unknown or unsubscribed one lands on All Subscriptions instead of the
  first feed alphabetically.
- Add an Auto theme that follows the system's light/dark setting, and
  move Dark/Light/Classic/Auto into Settings as a dropdown alongside the
  header button's toggle.
- Add Currently Listening below Popular: episodes started and not
  finished, across every subscribed feed, one tap to resume. Reuses the
  existing entries/filter machinery (Filter::InProgress) rather than a
  new endpoint.
- Likely fix for the iOS bug where the topbar stopped responding to taps
  until a hard refresh (100vh -> 100dvh); unverified on a real device.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DmQfE1eFPApnXWyPHBWqUA

CHANGELOG.md

@@ -10,6 +10,29 @@ The long form, with what was wrong before and how it was found, is in
 
 ## [Unreleased]
 
+## [0.5.4] - 2026-09-14
+
+### Added
+
+- Currently Listening, below Popular: episodes you started and have not finished, across every
+  feed you subscribe to. Tap one to pick up where you left off.
+- Theme has an Auto option, alongside Dark, Light and Classic, that follows your system's
+  light/dark setting. All four are now also in Settings, as a dropdown next to the header
+  button's one-click-at-a-time toggle -- the same setting either way.
+
+### Changed
+
+- The feed (or Directory/Popular/All Subscriptions) and the tab you had open are remembered
+  across a reload or a new visit. A feed you no longer subscribe to, or a first visit with
+  nothing remembered yet, lands on All Subscriptions instead of the first feed alphabetically.
+
+### Fixed
+
+- On iOS, the topbar (the hamburger menu included) could stop responding to taps until a hard
+  refresh. The page sized itself with `100vh`, which iOS Safari measures against the address
+  bar's collapsed state rather than what is actually visible; `100dvh` tracks the real viewport
+  as the bar shows and hides.
+
 ## [0.5.3] - 2026-09-14
 
 ### Added
@@ -332,7 +355,8 @@ The long form, with what was wrong before and how it was found, is in
 - Torrent enclosures through librqbit, seeding to a ratio or a time, with a stall timeout.
 - `ipx import` and `ipx export` for OPML, and systemd units in `contrib/`.
 
-[unreleased]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.3...main
+[unreleased]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.4...main
+[0.5.4]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.3...v0.5.4
 [0.5.3]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.2...v0.5.3
 [0.5.2]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.1...v0.5.2
 [0.5.1]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.5.0...v0.5.1