chore(baseline): target DSH 0.1.6-alpha.2 and drop 0.1.5-rc support

The peer floor had to move: semver's prerelease rule needs a comparator on the
same [major,minor,patch] tuple, so `^0.1.5-rc.1` can never match any 0.1.6
prerelease. The floor becomes `^0.1.6-alpha.2` (which does admit 0.1.6 alpha/rc
prereleases and excludes 0.1.5), and `engines.dsh` follows. This is a deliberate
support-line break, matching how v0.19.0 dropped 0.1.2: 0.1.5-rc hosts stay on
0.19.1.

Three upstream changes actually reach this plugin and are adapted here:

- `IconSendOutline16` no longer exists in ui-primitives (only
  `IconSendOutline14`).
- `TerminalBlockLabels` gained a required `noExitCode` pill text.
- `ConnectionIndicator` dropped `reconnectLabel`: the outage label is now the
  one static label that already names the retry action, so the label copy moves
  there, matching the host's own '连接异常，点击立即重连'.

ui-primitives still declares no `dependencies` while its bundle bare-imports
more than it used to: `diff` and `simple-icons` were previously satisfied only
transitively and had to be hoisted into devDependencies, exactly like the
anser/shiki/katex group before them. `@deepseek-ai/dsh-code-runtime` is gone
upstream (the package no longer exists) and leaves the dev tree.

The e2e fallback npx spec is pinned rather than version-less: an unpinned
`npx @deepseek-ai/dsh` resolves npm's `latest`, which is still the 0.1.5 line
this plugin no longer supports.

src/client/SideChatView.tsx

@@ -36,7 +36,7 @@ import {
   IconNewChatOutline16,
   IconPlusOutline16,
   IconSearchOutline16,
-  IconSendOutline16,
+  IconSendOutline14,
   IconSparkle16,
   IconStopFill16,
   MarkdownText,
@@ -354,6 +354,9 @@ export function SideChatView(props: {
         ...shared,
         signal: (signal: string) => t('sideChatBlockSignal', { signal }),
         exitCode: (exitCode: number) => t('sideChatBlockExitCode', { code: exitCode }),
+        // DSH 0.1.6-alpha.2 added this pill text: a settle the view cannot
+        // name (killed by an unknown signal, or never started).
+        noExitCode: t('sideChatBlockNoExitCode'),
         running: t('sideChatBlockRunning'),
         failed: t('sideChatBlockFailed'),
         done: t('sideChatBlockDone'),
@@ -739,7 +742,6 @@ export function SideChatView(props: {
         <ConnectionIndicator
           state={connectionState}
           disconnectedLabel={t('sideChatConnDisconnected')}
-          reconnectLabel={t('sideChatConnReconnect')}
           connectingLabel={t('sideChatConnConnecting')}
           recoveredLabel={t('sideChatConnRecovered')}
           reconnectActionLabel={t('sideChatConnReconnectAction')}
@@ -802,7 +804,7 @@ export function SideChatView(props: {
               disabled={composer.trim() === '' || busy !== null}
               title={t('sideChatSend')}
             >
-              <IconSendOutline16 />
+              <IconSendOutline14 size={16} />
             </button>
           )}
         </div>

src/client/locales-ar.ts

@@ -366,6 +366,7 @@ export const ar: Record<string, string> = {
   sideChatBlockExpandAria: 'توسيع {hidden} أسطر إضافية',
   sideChatBlockSignal: 'أُنهي بالإشارة: {signal}',
   sideChatBlockExitCode: 'رمز الخروج {code}',
+  sideChatBlockNoExitCode: "انتهى دون رمز خروج",
   sideChatBlockRunning: 'قيد التشغيل',
   sideChatBlockFailed: 'فشل',
   sideChatBlockDone: 'اكتمل',

src/client/locales-de.ts

@@ -351,6 +351,7 @@ export const de: Record<string, string> = {
   sideChatBlockExpandAria: '{hidden} weitere Zeilen ausklappen',
   sideChatBlockSignal: 'Durch Signal beendet: {signal}',
   sideChatBlockExitCode: 'Exit-Code {code}',
+  sideChatBlockNoExitCode: "Ohne Exit-Code beendet",
   sideChatBlockRunning: 'Läuft',
   sideChatBlockFailed: 'Fehlgeschlagen',
   sideChatBlockDone: 'Fertig',

src/client/locales-fr.ts

@@ -358,6 +358,7 @@ export const fr: Record<string, string> = {
   sideChatBlockExpandAria: 'Déplier {hidden} lignes de plus',
   sideChatBlockSignal: 'Terminé par le signal : {signal}',
   sideChatBlockExitCode: 'Code de sortie {code}',
+  sideChatBlockNoExitCode: "Terminé sans code de sortie",
   sideChatBlockRunning: 'En cours',
   sideChatBlockFailed: 'Échec',
   sideChatBlockDone: 'Terminé',

src/client/locales-hi.ts

@@ -365,6 +365,7 @@ export const hi: Record<string, string> = {
   sideChatBlockExpandAria: 'आगे की {hidden} पंक्तियाँ विस्तृत करें',
   sideChatBlockSignal: 'सिग्नल से समाप्त: {signal}',
   sideChatBlockExitCode: 'एग्जिट कोड {code}',
+  sideChatBlockNoExitCode: "बिना एग्जिट कोड समाप्त",
   sideChatBlockRunning: 'चल रहा है',
   sideChatBlockFailed: 'विफल',
   sideChatBlockDone: 'पूर्ण',

src/client/locales-id.ts

@@ -363,6 +363,7 @@ export const id: Record<string, string> = {
   sideChatBlockExpandAria: 'Perlihatkan {hidden} baris lagi',
   sideChatBlockSignal: 'Diakhiri sinyal: {signal}',
   sideChatBlockExitCode: 'Kode keluar {code}',
+  sideChatBlockNoExitCode: "Berakhir tanpa kode keluar",
   sideChatBlockRunning: 'Berjalan',
   sideChatBlockFailed: 'Gagal',
   sideChatBlockDone: 'Selesai',

src/client/locales-it.ts

@@ -356,6 +356,7 @@ export const it: Record<string, string> = {
   sideChatBlockExpandAria: 'Espandi altre {hidden} righe',
   sideChatBlockSignal: 'Terminato dal segnale: {signal}',
   sideChatBlockExitCode: 'Codice di uscita {code}',
+  sideChatBlockNoExitCode: "Terminato senza codice di uscita",
   sideChatBlockRunning: 'In esecuzione',
   sideChatBlockFailed: 'Non riuscito',
   sideChatBlockDone: 'Completato',

src/client/locales-ja.ts

@@ -365,13 +365,14 @@ export const ja: Record<string, string> = {
   sideChatBlockExpandAria: '残り {hidden} 行を展開',
   sideChatBlockSignal: 'シグナルで終了：{signal}',
   sideChatBlockExitCode: '終了コード {code}',
+  sideChatBlockNoExitCode: '終了（終了コードなし）',
   sideChatBlockRunning: '実行中',
   sideChatBlockFailed: '失敗',
   sideChatBlockDone: '完了',
   sideChatBlockNoOutput: '（出力なし）',
   sideChatBlockFiles: '{count} 個のファイル',
   sideChatBlockWindow: '全 {total} 行中 {shown} 行を表示',
-  sideChatConnDisconnected: '接続が切断されました',
+  sideChatConnDisconnected: '接続が切断されました。クリックで再接続',
   sideChatConnReconnect: '再接続',
   sideChatConnConnecting: '再接続中…',
   sideChatConnRecovered: '接続が復旧しました',

src/client/locales-ko.ts

@@ -357,6 +357,7 @@ export const ko: Record<string, string> = {
   sideChatBlockExpandAria: '나머지 {hidden}줄 펼치기',
   sideChatBlockSignal: '시그널로 종료됨: {signal}',
   sideChatBlockExitCode: '종료 코드 {code}',
+  sideChatBlockNoExitCode: "종료됨(종료 코드 없음)",
   sideChatBlockRunning: '실행 중',
   sideChatBlockFailed: '실패',
   sideChatBlockDone: '완료',

src/client/locales-nl.ts

@@ -363,6 +363,7 @@ export const nl: Record<string, string> = {
   sideChatBlockExpandAria: '{hidden} regels meer uitvouwen',
   sideChatBlockSignal: 'Beëindigd door signaal: {signal}',
   sideChatBlockExitCode: 'Exitcode {code}',
+  sideChatBlockNoExitCode: "Beëindigd zonder exitcode",
   sideChatBlockRunning: 'Wordt uitgevoerd',
   sideChatBlockFailed: 'Mislukt',
   sideChatBlockDone: 'Voltooid',

src/client/locales-pl.ts

@@ -367,6 +367,7 @@ export const pl: Record<string, string> = {
   sideChatBlockExpandAria: 'Rozwiń kolejne {hidden} wierszy',
   sideChatBlockSignal: 'Zakończono sygnałem: {signal}',
   sideChatBlockExitCode: 'Kod zakończenia {code}',
+  sideChatBlockNoExitCode: "Zakończono bez kodu wyjścia",
   sideChatBlockRunning: 'Uruchomione',
   sideChatBlockFailed: 'Niepowodzenie',
   sideChatBlockDone: 'Zakończono',

src/client/locales-pt.ts

@@ -348,6 +348,7 @@ export const pt: Record<string, string> = {
   sideChatBlockExpandAria: 'Expandir mais {hidden} linhas',
   sideChatBlockSignal: 'Encerrado por sinal: {signal}',
   sideChatBlockExitCode: 'Código de saída {code}',
+  sideChatBlockNoExitCode: "Terminou sem código de saída",
   sideChatBlockRunning: 'Em execução',
   sideChatBlockFailed: 'Falhou',
   sideChatBlockDone: 'Concluído',

src/client/locales-ru.ts

@@ -363,6 +363,7 @@ export const ru: Record<string, string> = {
   sideChatBlockExpandAria: 'Развернуть ещё {hidden} строк',
   sideChatBlockSignal: 'Завершён сигналом: {signal}',
   sideChatBlockExitCode: 'Код выхода {code}',
+  sideChatBlockNoExitCode: "Завершено без кода выхода",
   sideChatBlockRunning: 'Выполняется',
   sideChatBlockFailed: 'Ошибка',
   sideChatBlockDone: 'Готово',

src/client/locales-sv.ts

@@ -348,6 +348,7 @@ export const sv: Record<string, string> = {
   sideChatBlockExpandAria: 'Visa {hidden} rader till',
   sideChatBlockSignal: 'Avslutad av signal: {signal}',
   sideChatBlockExitCode: 'Slutkod {code}',
+  sideChatBlockNoExitCode: "Avslutades utan slutkod",
   sideChatBlockRunning: 'Körs',
   sideChatBlockFailed: 'Misslyckades',
   sideChatBlockDone: 'Klar',

src/client/locales-th.ts

@@ -365,6 +365,7 @@ export const th: Record<string, string> = {
   sideChatBlockExpandAria: 'ขยายอีก {hidden} บรรทัด',
   sideChatBlockSignal: 'ถูกยุตด้วยสัญญาณ: {signal}',
   sideChatBlockExitCode: 'รหัสออก {code}',
+  sideChatBlockNoExitCode: "สิ้นสุดโดยไม่มีรหัสออก",
   sideChatBlockRunning: 'กำลังทำงาน',
   sideChatBlockFailed: 'ล้มเหลว',
   sideChatBlockDone: 'เสร็จสิ้น',

src/client/locales-tr.ts

@@ -365,6 +365,7 @@ export const tr: Record<string, string> = {
   sideChatBlockExpandAria: '{hidden} satır daha genişlet',
   sideChatBlockSignal: 'Sinyalle sonlandırıldı: {signal}',
   sideChatBlockExitCode: 'Çıkış kodu {code}',
+  sideChatBlockNoExitCode: "Çıkış kodu olmadan bitti",
   sideChatBlockRunning: 'Çalışıyor',
   sideChatBlockFailed: 'Başarısız',
   sideChatBlockDone: 'Tamamlandı',

src/client/locales-vi.ts

@@ -365,6 +365,7 @@ export const vi: Record<string, string> = {
   sideChatBlockExpandAria: 'Mở rộng thêm {hidden} dòng',
   sideChatBlockSignal: 'Kết thúc bởi tín hiệu: {signal}',
   sideChatBlockExitCode: 'Mã thoát {code}',
+  sideChatBlockNoExitCode: "Kết thúc không có mã thoát",
   sideChatBlockRunning: 'Đang chạy',
   sideChatBlockFailed: 'Thất bại',
   sideChatBlockDone: 'Hoàn tất',

src/client/locales-zh-HK.ts

@@ -380,6 +380,7 @@ export const zhHK: Record<string, string> = {
   sideChatBlockExpandAria: '展開其餘 {hidden} 行',
   sideChatBlockSignal: '訊號終止：{signal}',
   sideChatBlockExitCode: '結束碼 {code}',
+  sideChatBlockNoExitCode: "已結束（無結束碼）",
   sideChatBlockRunning: '執行中',
   sideChatBlockFailed: '失敗',
   sideChatBlockDone: '完成',

src/client/locales-zh-MO.ts

@@ -380,6 +380,7 @@ export const zhMO: Record<string, string> = {
   sideChatBlockExpandAria: '展開其餘 {hidden} 行',
   sideChatBlockSignal: '訊號終止：{signal}',
   sideChatBlockExitCode: '結束碼 {code}',
+  sideChatBlockNoExitCode: "已結束（無結束碼）",
   sideChatBlockRunning: '執行中',
   sideChatBlockFailed: '失敗',
   sideChatBlockDone: '完成',

src/client/locales-zh-TW.ts

@@ -380,6 +380,7 @@ export const zhTW: Record<string, string> = {
   sideChatBlockExpandAria: '展開其餘 {hidden} 行',
   sideChatBlockSignal: '訊號終止：{signal}',
   sideChatBlockExitCode: '結束碼 {code}',
+  sideChatBlockNoExitCode: "已結束（無結束碼）",
   sideChatBlockRunning: '執行中',
   sideChatBlockFailed: '失敗',
   sideChatBlockDone: '完成',

src/client/locales.ts

@@ -377,13 +377,14 @@ export const zh = {
   sideChatBlockExpandAria: '展开其余 {hidden} 行',
   sideChatBlockSignal: '信号终止：{signal}',
   sideChatBlockExitCode: '退出码 {code}',
+  sideChatBlockNoExitCode: '已结束（无退出码）',
   sideChatBlockRunning: '运行中',
   sideChatBlockFailed: '失败',
   sideChatBlockDone: '完成',
   sideChatBlockNoOutput: '（无输出）',
   sideChatBlockFiles: '{count} 个文件',
   sideChatBlockWindow: '共 {total} 行 · 显示 {shown} 行',
-  sideChatConnDisconnected: '连接已断开',
+  sideChatConnDisconnected: '连接已断开，点击立即重连',
   sideChatConnReconnect: '重新连接',
   sideChatConnConnecting: '正在重连…',
   sideChatConnRecovered: '连接已恢复',
@@ -819,13 +820,14 @@ export const en: Record<keyof typeof zh, string> = {
   sideChatBlockExpandAria: 'Expand {hidden} more lines',
   sideChatBlockSignal: 'Killed by signal: {signal}',
   sideChatBlockExitCode: 'Exit code {code}',
+  sideChatBlockNoExitCode: 'Ended without an exit code',
   sideChatBlockRunning: 'Running',
   sideChatBlockFailed: 'Failed',
   sideChatBlockDone: 'Done',
   sideChatBlockNoOutput: '(no output)',
   sideChatBlockFiles: '{count} files',
   sideChatBlockWindow: '{shown} of {total} lines',
-  sideChatConnDisconnected: 'Connection lost',
+  sideChatConnDisconnected: 'Disconnected, reconnect now',
   sideChatConnReconnect: 'Reconnect',
   sideChatConnConnecting: 'Reconnecting…',
   sideChatConnRecovered: 'Connection restored',

src/client/service.ts

@@ -634,7 +634,7 @@ export function matchUrlTarget(tabs: readonly TabDescriptor[], url: URL): TabDes
  * The plugin version this service instance reports. Keep in lockstep with
  * `package.json`'s version — `tests/service.spec.ts` asserts the pair.
  */
-export const SIDEBAR_SERVICE_VERSION = '0.19.1'
+export const SIDEBAR_SERVICE_VERSION = '0.20.0'
 
 /**
  * Monotonic capability list consumers use to gate new API usage (features