feat(file-info): detail every version, file and stream the server reports

The sheet collapsed an item to `Media.first` / `MediaSources.first` and
rendered a fixed set of rows, so split files, extra versions, per-track
properties, HDR classification and Dolby Vision were all invisible.

Model the payload the way both servers shape it — versions own parts,
parts own streams — and project every property either backend populates
onto `MediaStreamDetails`. The field set comes from sweeping both test
servers in full through the clients' own request shapes (Plex 6842
Media / 6842 Part / 39864 Stream entries, Jellyfin 6349 sources / 37763
streams / 61224 attachments), so file presence, Dolby Vision layers,
dynamic range, sample rate, spatial audio, sidecar provenance, embedded
attachments, rotation and the lyric stream type all survive. A coverage
test fails when a server key is neither carried, folded into a sibling,
nor excluded with a reason.

File Info also stopped trusting the shared `/library/metadata/{id}`
cache row: `getPlaybackExtras` writes it without `includeStreams` /
`checkFiles`, so the sheet could render with no stream table at all.
Detect that shape and refetch once under the request context captured
before the cache read, so the outgoing token and the cache namespace
stay on one profile.

Rework the layout to match: a summary chip row, then flat tonal cards
with a two-column field grid that collapses to one column on narrow
viewports, per-stream cards with flag chips, and a copyable monospace
path row. The card fill is a tonal step off the text colour rather than
the `bg` token, which is one shade from the sheet surface on OLED.

lib/i18n/strings_zh.g.dart

@@ -507,8 +507,8 @@ class Translations$fileInfo$zh extends Translations$fileInfo$en {
 	@override String get title => '文件信息';
 	@override String get video => '视频';
 	@override String get audio => '音频';
+	@override String get subtitles => '字幕';
 	@override String get file => '文件';
-	@override String get advanced => '高级';
 	@override String get codec => '编解码器';
 	@override String get resolution => '分辨率';
 	@override String get bitrate => '比特率';
@@ -521,7 +521,6 @@ class Translations$fileInfo$zh extends Translations$fileInfo$en {
 	@override String get colorPrimaries => '色彩基色';
 	@override String get chromaSubsampling => '色度子采样';
 	@override String get channels => '声道';
-	@override String get subtitles => '字幕';
 	@override String get overallBitrate => '总比特率';
 	@override String get path => '路径';
 	@override String get size => '大小';
@@ -2557,8 +2556,8 @@ extension on TranslationsZh {
 			'fileInfo.title' => '文件信息',
 			'fileInfo.video' => '视频',
 			'fileInfo.audio' => '音频',
+			'fileInfo.subtitles' => '字幕',
 			'fileInfo.file' => '文件',
-			'fileInfo.advanced' => '高级',
 			'fileInfo.codec' => '编解码器',
 			'fileInfo.resolution' => '分辨率',
 			'fileInfo.bitrate' => '比特率',
@@ -2571,7 +2570,6 @@ extension on TranslationsZh {
 			'fileInfo.colorPrimaries' => '色彩基色',
 			'fileInfo.chromaSubsampling' => '色度子采样',
 			'fileInfo.channels' => '声道',
-			'fileInfo.subtitles' => '字幕',
 			'fileInfo.overallBitrate' => '总比特率',
 			'fileInfo.path' => '路径',
 			'fileInfo.size' => '大小',
@@ -2707,9 +2705,9 @@ extension on TranslationsZh {
 			'videoControls.language' => '语言',
 			'videoControls.noSubtitlesFound' => '未找到字幕',
 			'videoControls.subtitleDownloaded' => '字幕已下载',
+			'videoControls.subtitleDownloadedNotApplied' => '字幕已下载，但无法选择',
 			_ => null,
 		} ?? switch (path) {
-			'videoControls.subtitleDownloadedNotApplied' => '字幕已下载，但无法选择',
 			'videoControls.subtitleDownloadFailed' => '字幕下载失败',
 			'videoControls.searchLanguages' => '搜索语言…',
 			'messages.markedAsWatched' => '已标记为已观看',
@@ -3221,9 +3219,9 @@ extension on TranslationsZh {
 			'watchTogether.failedToJoin' => '加入会话失败',
 			'watchTogether.sessionCodeCopied' => '会话代码已复制到剪贴板',
 			'watchTogether.relayUnreachable' => '无法访问中继服务器。网络运营商的屏蔽可能导致“一起看”不可用。',
+			'watchTogether.reconnectingToHost' => '正在重新连接到主持人…',
 			_ => null,
 		} ?? switch (path) {
-			'watchTogether.reconnectingToHost' => '正在重新连接到主持人…',
 			'watchTogether.currentPlayback' => '当前播放',
 			'watchTogether.joinCurrentPlayback' => '加入当前播放',
 			'watchTogether.joinCurrentPlaybackDescription' => '加入主持人当前正在观看的内容',