feat(terminal): add Life OS command interface

public/locales/en.json

@@ -8,7 +8,8 @@
     "tasks": "TASKS",
     "calendar": "CALENDAR",
     "system": "SYSTEM",
-    "browser": "BROWSER"
+    "browser": "BROWSER",
+    "terminal": "TERMINAL"
   },
   "common": {
     "save": "SAVE",
@@ -540,5 +541,36 @@
     "frame": "Embedded web page",
     "embedHint": "Some websites do not allow embedding. If the page is blank or blocked, open it in a new tab.",
     "invalid": "Enter a valid web address or search."
+  },
+  "terminal": {
+    "title": "TERMINAL",
+    "hint": "Type help to see commands",
+    "command": "Life OS command",
+    "memory": "Memory",
+    "task": "Task",
+    "goal": "Goal",
+    "notePrompt": "Write your memory below. Ctrl/⌘ + Enter saves; Escape cancels.",
+    "saveNote": "Save memory",
+    "cancel": "Cancel",
+    "cancelled": "Memory creation cancelled.",
+    "opened": "Opened {app}.",
+    "empty": "No matching records.",
+    "memorySaved": "Memory saved: {title} · {date}",
+    "goalSaved": "Goal created: {title}",
+    "taskSaved": "Task created: {title}",
+    "taskCompleted": "Task completed: {title}",
+    "taskReopened": "Task reopened: {title}",
+    "invalidTitle": "Add a title within the allowed length.",
+    "invalidDate": "Use a real date in YYYY-MM-DD format, today, or tomorrow.",
+    "invalidPriority": "Priority must be high, normal, or low.",
+    "invalidValue": "Weather or energy value is invalid.",
+    "notFound": "The referenced task or goal was not found.",
+    "ambiguous": "More than one item has this title. Use its ID instead.",
+    "memoryExists": "A memory already exists for that date. Edit it in Today or Timeline.",
+    "invalidOption": "Unknown option or missing option value. Type help.",
+    "unclosedQuote": "A quote was not closed.",
+    "usage": "Missing title or item number. Type help.",
+    "unknownApp": "Unknown App. Type help.",
+    "unknownCommand": "Unknown command. Type help."
   }
 }