feat(insights): add factual weekly and monthly reports

public/locales/en.json

@@ -92,14 +92,31 @@
     "collection": "COLLECTION"
   },
   "insights": {
-    "eyebrow": "LAST 30 DAYS",
-    "title": "Insights, quietly.",
-    "weather": "WEATHER",
-    "average": "AVERAGE ENERGY",
-    "active": "MOST ACTIVE DAY",
-    "current": "CURRENT STREAK",
-    "longest": "Longest streak: {count} days",
-    "noEntries": "No entries yet"
+    "eyebrow": "PERIOD REPORTS",
+    "title": "Insights",
+    "description": "A factual view of what you recorded and completed.",
+    "period": "Report period",
+    "week": "WEEK",
+    "month": "MONTH",
+    "previous": "Previous period",
+    "next": "Next period",
+    "records": "RECORDING FREQUENCY",
+    "recordedDays": "{count} entries · {percent}% of elapsed days",
+    "tasks": "TASKS COMPLETED",
+    "completedTasks": "Tasks marked complete in this period",
+    "taskDetails": "{created} tasks created · {goals} goals completed",
+    "weather": "COMMON WEATHER",
+    "noWeather": "No weather recorded in this period",
+    "energy": "RECORDED ENERGY",
+    "energyFromTo": "First entry {first}/5 → latest {last}/5",
+    "singleEnergy": "One energy entry in this period",
+    "noEnergy": "No energy recorded in this period",
+    "highlights": "MOMENTS TO REVISIT",
+    "highlightSource": "Saved memories or entries tagged #highlight or #高光.",
+    "highlightFavorite": "SAVED",
+    "highlightTag": "TAGGED",
+    "highlightEmpty": "No saved or tagged memories in this period.",
+    "note": "Only saved records are counted. Missing dates carry no inferred weather or energy."
   },
   "profile": {
     "eyebrow": "SYSTEM PROFILE",