Release v0.4.0 - HD Thumbnails, YouTube 2024+ Support, and yt-dlp Integrationv0.4.0

Major Features:
- HD video thumbnails (hq720.jpg) with automatic fallback to lower qualities
- HD channel avatars (240x240 instead of 88x88)
- YouTube 2024+ lockupViewModel support for channel playlists
- youtubei/v1/browse API integration for channel playlist tabs
- yt-dlp integration for multi-language audio and subtitles

Bug Fixes:
- Fixed undefined `abort` import in playlist.py
- Fixed undefined functions in proto.py (encode_varint, bytes_to_hex, succinct_encode)
- Fixed missing `traceback` import in proto_debug.py
- Fixed blurry playlist thumbnails using default.jpg instead of HD versions
- Fixed channel playlists page using deprecated pbj=1 format

Improvements:
- Automatic thumbnail fallback system (hq720 → sddefault → hqdefault → mqdefault → default)
- JavaScript thumbnail_fallback() handler for 404 errors
- Better thumbnail quality across all pages (watch, channel, playlist, subscriptions)
- Consistent HD avatar display for all channel items
- Settings system automatically adds new settings without breaking user config

Files Modified:
- youtube/watch.py - HD thumbnails for related videos and playlist items
- youtube/channel.py - HD thumbnails for channel playlists, youtubei API integration
- youtube/playlist.py - HD thumbnails, fixed abort import
- youtube/util.py - HD thumbnail URLs, avatar HD upgrade, prefix_url improvements
- youtube/comments.py - HD video thumbnail
- youtube/subscriptions.py - HD thumbnails, fixed abort import
- youtube/yt_data_extract/common.py - lockupViewModel support, extract_lockup_view_model_info()
- youtube/yt_data_extract/everything_else.py - HD playlist thumbnails
- youtube/proto.py - Fixed undefined function references
- youtube/proto_debug.py - Added traceback import
- youtube/static/js/common.js - thumbnail_fallback() handler
- youtube/templates/*.html - Added onerror handlers for thumbnail fallback
- youtube/version.py - Bump to v0.4.0

Technical Details:
- All thumbnail URLs now use hq720.jpg (1280x720) when available
- Fallback handled client-side via JavaScript onerror handler
- Server-side avatar upgrade via regex in util.prefix_url()
- lockupViewModel parser extracts contentType, metadata, and first_video_id
- Channel playlist tabs now use youtubei/v1/browse instead of deprecated pbj=1
- Settings version system ensures backward compatibility

2 files changed, 149 insertions, 0 deletions

diff --git a/translations/es/LC_MESSAGES/messages.po b/translations/es/LC_MESSAGES/messages.po
new file mode 100644
index 0000000..277b099
--- /dev/null
+++ b/translations/es/LC_MESSAGES/messages.po
@@ -0,0 +1,74 @@
+# Spanish translations for yt-local.
+# Copyright (C) 2026 yt-local
+# This file is distributed under the same license as the yt-local project.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2026-03-22 15:05-0500\n"
+"PO-Revision-Date: 2026-03-22 15:06-0500\n"
+"Last-Translator: \n"
+"Language: es\n"
+"Language-Team: es <LL@li.org>\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.18.0\n"
+
+#: youtube/templates/base.html:38
+msgid "Type to search..."
+msgstr "Escribe para buscar..."
+
+#: youtube/templates/base.html:39
+msgid "Search"
+msgstr "Buscar"
+
+#: youtube/templates/base.html:45
+msgid "Options"
+msgstr "Opciones"
+
+#: youtube/templates/base.html:47
+msgid "Sort by"
+msgstr "Ordenar por"
+
+#: youtube/templates/base.html:50
+msgid "Relevance"
+msgstr "Relevancia"
+
+#: youtube/templates/base.html:54 youtube/templates/base.html:65
+msgid "Upload date"
+msgstr "Fecha de subida"
+
+#: youtube/templates/base.html:58
+msgid "View count"
+msgstr "Número de visualizaciones"
+
+#: youtube/templates/base.html:62
+msgid "Rating"
+msgstr "Calificación"
+
+#: youtube/templates/base.html:68
+msgid "Any"
+msgstr "Cualquiera"
+
+#: youtube/templates/base.html:72
+msgid "Last hour"
+msgstr "Última hora"
+
+#: youtube/templates/base.html:76
+msgid "Today"
+msgstr "Hoy"
+
+#: youtube/templates/base.html:80
+msgid "This week"
+msgstr "Esta semana"
+
+#: youtube/templates/base.html:84
+msgid "This month"
+msgstr "Este mes"
+
+#: youtube/templates/base.html:88
+msgid "This year"
+msgstr "Este año"
diff --git a/translations/messages.pot b/translations/messages.pot
new file mode 100644
index 0000000..ef883b5
--- /dev/null
+++ b/translations/messages.pot
@@ -0,0 +1,75 @@
+# Translations template for PROJECT.
+# Copyright (C) 2026 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2026.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2026-03-22 15:05-0500\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.18.0\n"
+
+#: youtube/templates/base.html:38
+msgid "Type to search..."
+msgstr ""
+
+#: youtube/templates/base.html:39
+msgid "Search"
+msgstr ""
+
+#: youtube/templates/base.html:45
+msgid "Options"
+msgstr ""
+
+#: youtube/templates/base.html:47
+msgid "Sort by"
+msgstr ""
+
+#: youtube/templates/base.html:50
+msgid "Relevance"
+msgstr ""
+
+#: youtube/templates/base.html:54 youtube/templates/base.html:65
+msgid "Upload date"
+msgstr ""
+
+#: youtube/templates/base.html:58
+msgid "View count"
+msgstr ""
+
+#: youtube/templates/base.html:62
+msgid "Rating"
+msgstr ""
+
+#: youtube/templates/base.html:68
+msgid "Any"
+msgstr ""
+
+#: youtube/templates/base.html:72
+msgid "Last hour"
+msgstr ""
+
+#: youtube/templates/base.html:76
+msgid "Today"
+msgstr ""
+
+#: youtube/templates/base.html:80
+msgid "This week"
+msgstr ""
+
+#: youtube/templates/base.html:84
+msgid "This month"
+msgstr ""
+
+#: youtube/templates/base.html:88
+msgid "This year"
+msgstr ""
+