feat: translate system interface to English

docs/execution-support.md

@@ -1,7 +1,7 @@
 # Execution support prototype
 
-The shared sidebar opens `/support` (連絡) and `/journal` (記録), alongside
-リーダー and Twitter Lite. These are UI-only prototypes with fictional contacts
+The shared sidebar opens `/support` (Messages) and `/journal` (Journal), alongside
+Reader and Twitter Lite. These are UI-only prototypes with fictional contacts
 and in-memory state. Reloading resets the prototype state. Tasks, communication status, outcomes, and
 journal entries are shared between routes for the current browser session.
 No messages, calendar events, medical records, or Rensheng pages are written.
@@ -37,21 +37,21 @@ the new communication and journal prototypes do not consume those accounts.
 ## Daily home
 
 `/` presents a greeting, a large input, and a flexible plan grouped as
-「まずこれ」「いつものこと」「余裕があれば」. There are no fixed time slots.
+Start here, Routines, and If there’s room. There are no fixed time slots.
 Tasks can be reordered, completed, deferred, restored, or followed as routine
 steps. Communications can be reviewed directly in a home dialog; changes also
 appear in `/support`. Journal entries and corrections appear on the home, and
 reader samples open for reading. Twitter Lite remains a separate work surface.
 
-The input currently uses a deterministic Japanese mock interpreter, not an LLM.
+The input currently uses a deterministic English/Japanese mock interpreter, not an LLM.
 It proposes typed actions for task creation/status/reordering, routine steps,
 contact reply/review or deferral, notes/weight/medication records, and navigation.
 Confirming a proposal dispatches the corresponding operation. Unknown or
 ambiguous input does not change state. Message sending still goes through the
 existing simulated review UI; this prototype performs no external send.
 
-Examples: 「買い物を追加」「朝の支度をあとで」「青木さんに返信」
-「メモ：次は資料の2ページ目から」「体重は65.2kg」「リーダーを開く」.
+Examples: `Add grocery shopping`, `Defer Morning routine`, `Reply to Aoki`,
+`Note: Resume from page 2`, `Weight: 65.2 kg`, and `Open Reader`.
 
 The interaction reference is [Tiimo visual planning](https://www.tiimoapp.com/product/visual-planning),
 reviewed on 2026-09-28: combined routines and tasks, flexible reordering, small