refactor: use metaglot to take macos bundle i18n over

- use metaglot for macos bundle i18n
- set macos icon from PUBLIC to PRIVATE
- remove CFBundleLongVersionString from Info.plist

dist/Info.plist.in.liquid

@@ -14,10 +14,8 @@
     <string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
     <key>CFBundleInfoDictionaryVersion</key>
     <string>6.0</string>
-    <key>CFBundleLongVersionString</key>
-    <string>${MACOSX_BUNDLE_LONG_VERSION_STRING}</string>
     <key>CFBundleName</key>
-    <string>${MACOSX_BUNDLE_BUNDLE_NAME}</string>
+    <string>{{ default.strings.app_name | xml_escape }}</string>
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
@@ -29,28 +27,23 @@
     <key>CSResourcesFileMapped</key>
     <true/>
     <key>NSHumanReadableCopyright</key>
-    <string>${MACOSX_BUNDLE_COPYRIGHT}</string>
-    <!-- FIXME: this list can't be automatically generated by Qt's CMake API, don't know why. -->
+    <string>MIT/Expat License - Copyright (C) 2026 Gary Wang</string>
+    <!--
+      CFBundleLocalizations is generated from the metadata localization languages (the metaglot
+      "langs" list), while this field by definition describes the application's language
+      availability. This deviation works around an upstream Qt bug: since the Qt 6.7.0 refactor,
+      the CMake function _qt_internal_store_languages_from_ts_files_in_targets loses the parsed
+      TS language codes (a missing list(APPEND)), so Qt's own CFBundleLocalizations generation
+      yields an empty list. Consistency between the metadata languages and the application
+      languages is maintained manually at release time.
+      TODO: drop this workaround and let Qt generate CFBundleLocalizations itself once the
+      upstream bug is fixed and the fix ships in the CI toolchain.
+    -->
     <key>CFBundleLocalizations</key>
     <array>
-        <string>en</string>
-        <string>ca</string>
-        <string>de</string>
-        <string>es</string>
-        <string>fr</string>
-        <string>id</string>
-        <string>it</string>
-        <string>ja</string>
-        <string>ko</string>
-        <string>nb_NO</string>
-        <string>nl</string>
-        <string>pa_PK</string>
-        <string>ru</string>
-        <string>si</string>
-        <string>ta</string>
-        <string>tr</string>
-        <string>uk</string>
-        <string>zh_CN</string>
+{% for lang in langs %}
+        <string>{{ lang }}</string>
+{% endfor %}
     </array>
     <key>CFBundleDocumentTypes</key>
     <array>

dist/Info.plist.in.toml

@@ -0,0 +1,26 @@
+version = 1
+source_language = "en"
+
+[strings.app_name]
+msgid = "Pineapple Pictures"
+comment = "Display name of the application."
+
+[strings.file_type_jpeg]
+msgid = "JPEG Image"
+comment = "Name of the JPEG document type (jpg, jpeg, jfif)."
+
+[strings.file_type_png]
+msgid = "PNG Image"
+comment = "Name of the PNG document type."
+
+[strings.file_type_webp]
+msgid = "WebP Image"
+comment = "Name of the WebP document type."
+
+[strings.file_type_gif]
+msgid = "GIF Image"
+comment = "Name of the GIF document type."
+
+[strings.file_type_svg]
+msgid = "SVG Image"
+comment = "Name of the SVG document type."

dist/InfoPlist.strings.liquid

@@ -0,0 +1,8 @@
+/* Application display name. The key is the Info.plist key name. */
+"CFBundleName" = "{{ strings.app_name | plist_strings_escape }}";
+/* File type names. The key is the source text, covering CFBundleTypeName. */
+"{{ sources.file_type_jpeg | plist_strings_escape }}" = "{{ strings.file_type_jpeg | plist_strings_escape }}";
+"{{ sources.file_type_png | plist_strings_escape }}" = "{{ strings.file_type_png | plist_strings_escape }}";
+"{{ sources.file_type_webp | plist_strings_escape }}" = "{{ strings.file_type_webp | plist_strings_escape }}";
+"{{ sources.file_type_gif | plist_strings_escape }}" = "{{ strings.file_type_gif | plist_strings_escape }}";
+"{{ sources.file_type_svg | plist_strings_escape }}" = "{{ strings.file_type_svg | plist_strings_escape }}";