docs(blog): add release notes for IPTVnator v0.21

Covers the embedded MPV player on macOS, toggleable Live TV sidebars,
command palette upgrades, and module fixes. Credits the Telegram tip
about using IINA as the external player and links the related GitHub
issues.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/website/src/content/blog/v0-21-release-notes.mdx

@@ -0,0 +1,260 @@
+---
+title: v0.21 - Release Notes
+description: IPTVnator v0.21 brings an experimental embedded MPV player on macOS, toggleable sidebars, a smarter command palette, faster loading, and a long list of fixes across M3U, Xtream and Stalker.
+featured: true
+pubDate: 2026-05-06
+author: 4gray
+heroImage: /iptvnator/blog/v0-21/wide-changelog.jpg
+tags:
+    - release
+    - release-notes
+    - v0.21
+draft: false
+---
+
+import Alert from '../../components/blog/Alert.astro';
+import BlogImageSlider from '../../components/blog/BlogImageSlider.astro';
+import ChangeTable from '../../components/blog/ChangeTable.astro';
+import LinkCards from '../../components/blog/LinkCards.astro';
+import ReleaseMeta from '../../components/blog/ReleaseMeta.astro';
+import StatusPill from '../../components/blog/StatusPill.astro';
+import Spoiler from '../../components/blog/Spoiler.astro';
+
+IPTVnator **v0.21** is out.
+
+This one is mostly about quality of life. After the big UI rework in v0.20, the focus shifted to the rough edges that show up once you actually live in the app every day — playback speed, navigation chrome that gets in the way, command palette habits, and a pile of small bugs that came out of the new shell.
+
+There is also one bigger experimental change for macOS users: an **embedded MPV player** built directly into the app. No separate install, no PATH wiring, no “Where is MPV?” pop-up.
+
+<ReleaseMeta
+    version="v0.21.0"
+    releaseDate="May 6, 2026"
+    channels={['Desktop', 'PWA']}
+/>
+
+## Support the project
+
+If IPTVnator is useful to you and you’d like to keep it moving, the easiest way to help is via:
+
+- **GitHub Sponsors** — [github.com/sponsors/4gray](https://github.com/sponsors/4gray)
+- **Ko-fi** — [ko-fi.com/4gray](https://ko-fi.com/4gray)
+
+<LinkCards
+    links={[
+        {
+            label: 'GitHub Sponsors',
+            href: 'https://github.com/sponsors/4gray',
+            hint: 'Support continued development.',
+            icon: 'sponsor',
+        },
+        {
+            label: 'Ko-fi',
+            href: 'https://ko-fi.com/4gray',
+            hint: 'One-time tip jar.',
+            icon: 'kofi',
+        },
+        {
+            label: 'Telegram group',
+            href: 'https://t.me/iptvnator',
+            hint: 'Where most of this feedback comes from.',
+            icon: 'telegram',
+        },
+    ]}
+/>
+
+## What changed
+
+<ChangeTable
+    rows={[
+        {
+            area: 'macOS playback',
+            change: 'Experimental embedded MPV player — libmpv ships inside the app, no external install needed.',
+            impact: 'Fewer setup steps for new macOS users',
+        },
+        {
+            area: 'Live TV layout',
+            change: 'Channel sidebar and EPG panel can now be collapsed independently.',
+            impact: 'More room for the actual stream',
+        },
+        {
+            area: 'Command palette',
+            change: 'Switch player from the palette and a new "recent actions" section.',
+            impact: 'Less menu hunting for things you do often',
+        },
+        {
+            area: 'Performance',
+            change: 'WAL tuning, batched EPG lookups, and lazier image loading on the dashboard.',
+            impact: 'Quicker startup and snappier scrolling',
+        },
+        {
+            area: 'Bug fixes',
+            change: 'Stalker "14 items" cap, M3U sort order, Xtream search, file-playlist refresh, and more.',
+            impact: 'Less weird app behavior',
+        },
+    ]}
+/>
+
+## Embedded MPV on macOS (experimental)
+
+<StatusPill type="new" />
+
+The single biggest change in v0.21. macOS builds now ship libmpv inside the app and render it into a Cocoa view embedded in the IPTVnator window — so MPV-quality playback is available without installing anything separately.
+
+It’s deliberately marked **experimental** for this release. The feature is gated to macOS, the rendering path bypasses MPV’s usual `--wid` integration (so things like screensaver inhibition are wired up by the app itself), and there are still rough corners around fullscreen and edge codecs. If you hit something odd, please open an issue or ping the Telegram group.
+
+This was tracked in [#877](https://github.com/4gray/iptvnator/issues/877).
+
+<BlogImageSlider
+    images={[
+        {
+            src: '/iptvnator/blog/v0-21/embedded-mpv.webp',
+            alt: 'Embedded MPV player rendering inside the IPTVnator window on macOS',
+            caption: 'Embedded MPV — runs inside the app window on macOS, no extra install.',
+        },
+        {
+            src: '/iptvnator/blog/v0-21/sidebar-spotlight.webp',
+            alt: 'Live TV view with channel sidebar shown vs hidden',
+            caption: 'The Live TV sidebar (and EPG panel) can now be collapsed independently.',
+        },
+        {
+            src: '/iptvnator/blog/v0-21/feature-mosaic.webp',
+            alt: 'Feature mosaic for v0.21 — embedded MPV, toggleable sidebars, command palette, favorites, faster loading, module fixes',
+            caption: 'A quick tour of what changed in this release.',
+        },
+        {
+            src: '/iptvnator/blog/v0-21/wide-changelog.webp',
+            alt: 'Wide changelog overview for v0.21 with dashboard and command palette',
+            caption: 'Dashboard, command palette, and the new player chrome side by side.',
+        },
+    ]}
+/>
+
+### IINA on macOS — community tip
+
+Not everyone is going to want the embedded MPV player, and a question that came up in the Telegram group right after the v0.20 release was whether [IINA](https://iina.io/) — the popular MPV-based macOS player with a nicer GUI — can be used as the external player.
+
+Turns out: **yes**, and a community member figured it out before I did. Huge thanks to them — credit where it’s due, even without naming them publicly.
+
+<Alert type="info" title="Using IINA as the external player on macOS">
+In **Settings → External player**, point IPTVnator at `IINA.app` (the bundle path, e.g. `/Applications/IINA.app`) where you would normally put the path to MPV or VLC. Streams open in IINA the same way they would in MPV — single instance, GUI controls included.
+</Alert>
+
+This also retroactively closes the long-standing request in [#896](https://github.com/4gray/iptvnator/issues/896) — IINA support was effectively already there, it just wasn’t documented.
+
+## Toggleable sidebars in Live TV
+
+<StatusPill type="new" />
+
+The Live TV view used to always show the channel sidebar and the EPG panel. v0.21 adds an explicit toggle for both — collapse the channel list when you just want to watch, hide the EPG panel when you don’t need the schedule. The collapsed state is shared across the M3U, Xtream and Stalker live views.
+
+This came directly from feedback in the Telegram group asking for “a more focused viewing experience”.
+
+## Command palette upgrades
+
+<StatusPill type="improved" />
+
+A few small but high-leverage additions to <kbd>⌘</kbd>/<kbd>Ctrl</kbd>+<kbd>K</kbd>:
+
+- **Switch player from the palette.** No more diving into Settings to flip between the built-in player, MPV, VLC, or the new embedded MPV.
+- **Recent actions section.** The palette now surfaces your last 5 actions at the top, so the things you actually use stay one keystroke away.
+
+## Favorites & Recently Viewed
+
+<StatusPill type="improved" />
+
+A handful of small fixes that together make the global lists behave the way they should:
+
+- Live TV items no longer appear pre-favorited on first load.
+- You can favorite a channel directly from **Recently Viewed** (no more “go find it in the playlist first”).
+- Individual items can be removed from Recently Viewed via the right-click context menu — useful when something gets in there by accident.
+- “GLOBAL Favorites” has been renamed to just **Favorites**. The all-caps label was a leftover from earlier scoping work and looked out of place.
+
+## Playback & playlists
+
+<StatusPill type="improved" />
+
+- **Manual refresh for file-based playlists** is back. v0.20 silently dropped this for M3U files imported from disk and that was a regression — see [#891](https://github.com/4gray/iptvnator/issues/891). It’s back, and the file path is now preserved correctly across refreshes.
+- **VLC reuse-instance setting.** VLC was unconditionally spawning a new window per stream because its built-in single-instance preference doesn’t play nicely with how IPTVnator launches it. There’s now an opt-in setting that mirrors the existing MPV “reuse instance” behavior — one VLC window, controlled via its RC interface — see [#893](https://github.com/4gray/iptvnator/issues/893).
+- **MPV/VLC custom path fallback** behaves correctly again when the configured path is empty or invalid.
+
+## Module-level changes
+
+<StatusPill type="improved" />
+
+### M3U
+
+- New **cover size** setting (XL / L / M) for the channel grid.
+- **Sort “All Channels”** by name, or keep the original playlist order — handy for huge lists where alphabetical isn’t always what you want. This is a partial answer to the long-running [#738](https://github.com/4gray/iptvnator/issues/738).
+- Improved drag-and-drop ghost styling when reordering channels — the placeholder no longer looks like it’s stuck to the cursor.
+
+### Xtream
+
+- Better handling when the portal is unreachable — clearer error states instead of an indefinite spinner.
+- A **clear** button on the Xtream playlist form, so you can wipe the credentials without re-typing.
+- Fixed search when no category is selected (it used to silently return nothing).
+
+### Stalker
+
+- Fixed the long-standing **“14 items” bug** where Live TV channel lists would cap at 14 entries regardless of the actual portal contents.
+
+## Performance & internals
+
+<StatusPill type="improved" />
+
+Nothing user-visible on its own, but the cumulative effect is a noticeably quicker app:
+
+- SQLite WAL settings tuned for the app’s read/write pattern.
+- EPG “current program” lookups batched into a single IPC + SQL query instead of one round-trip per channel.
+- Channel-list rendering no longer clones the full channel array on every EPG tick.
+- Per-rail skeletons on the dashboard, plus lazy image loading on content cards.
+- Settings screen refactored into smaller pieces — fewer 500-line files, faster to navigate when reviewing or contributing.
+- Portal-status checks for Xtream are streamed instead of waiting on `Promise.all`, so a single slow server doesn’t block the rest.
+
+## Localization
+
+<StatusPill type="improved" />
+
+Missing translation strings filled in across all 17 supported locales. If you hit an English string in your language, it should be properly translated now.
+
+## Other fixes
+
+- **Loading screen** in the download manager no longer gets stuck when there are no active downloads.
+- **Reset Recently Viewed** for the M3U module now actually clears the list (and persists across restarts).
+- The Stalker mock server picked up additional fixtures so contributors can reproduce more issues locally.
+
+<Alert type="warning" title="Before updating">
+Please back up your playlists, credentials, URLs, and other important data before installing a new release. There are no schema migrations in v0.21, but it’s a good habit.
+</Alert>
+
+## Thanks
+
+This release is dominated by feedback from the Telegram group, GitHub issues, and donors who keep the project sustainable.
+
+A specific thank-you to the Telegram member who flagged the IINA workaround — that one note is going to save a lot of macOS users some setup pain.
+
+If you reported a bug, sent a Ko-fi tip, contributed a translation string, or just hung around in the chat answering other people’s questions: it adds up. v0.21 wouldn’t look like this without you.
+
+## Download
+
+<LinkCards
+    links={[
+        {
+            label: 'Download v0.21.0',
+            href: 'https://github.com/4gray/iptvnator/releases/tag/v0.21.0',
+            hint: 'Official binaries for macOS, Windows and Linux.',
+            icon: 'download',
+        },
+        {
+            label: 'Full Changelog',
+            href: 'https://github.com/4gray/iptvnator/compare/v0.20.0...v0.21.0',
+            hint: 'Every commit between v0.20.0 and v0.21.0.',
+            icon: 'github',
+        },
+        {
+            label: 'All Releases',
+            href: 'https://github.com/4gray/iptvnator/releases',
+            hint: 'Browse every IPTVnator release.',
+            icon: 'github',
+        },
+    ]}
+/>