chore(web): remove unused truncated recovery state

The 'truncated' kind in TerminalReplayUiState was declared in the union but never produced by any setReplayUiState call site, and the matching zh/en locale strings were dead. Now that 'snapshot success counts as success' is the intended semantic (no partial-history notice needed), drop the unreachable branch, type member, and locale entries to shrink the state space.

Author: pallyoung

packages/web/src/features/terminal-panel/replay-state.ts

@@ -26,7 +26,6 @@ export type TerminalReplayUiState =
   | { kind: "closed" }
   | { kind: "unavailable" }
   | { kind: "recovery_check_failed" }
-  | { kind: "truncated" }
   | { kind: "retryable_failure"; reason: "timeout" | "failed" }
   | { kind: "failed"; reason: "timeout" | "failed" }
   | { kind: "unrecoverable_history"; reason: "too_old_no_snapshot" };

packages/web/src/locales/en.json

@@ -356,9 +356,7 @@
       "unknown_body_with_provider": "This terminal session is no longer present on the server. Reopen a {provider} session to continue?",
       "closed_title": "This session has ended",
       "closed_body": "Reopen a new session to continue?",
-      "closed_body_with_provider": "Reopen a {provider} session to continue?",
-      "truncated_title": "Terminal history is partial",
-      "truncated_body": "Older output has already fallen out of the replay buffer, but new output will continue to stream."
+      "closed_body_with_provider": "Reopen a {provider} session to continue?"
     }
   },
   "file": {

packages/web/src/locales/zh.json

@@ -356,9 +356,7 @@
       "unknown_body_with_provider": "这个终端会话已经不在服务端。是否重新打开一个 {provider} 会话继续？",
       "closed_title": "当前会话已结束",
       "closed_body": "是否重新打开一个新会话继续。",
-      "closed_body_with_provider": "是否重新打开一个 {provider} 会话继续。",
-      "truncated_title": "历史内容不完整",
-      "truncated_body": "较早的终端输出已被回放缓冲区淘汰，后续输出仍会继续显示。"
+      "closed_body_with_provider": "是否重新打开一个 {provider} 会话继续。"
     }
   },
   "file": {