feat(engagement): localize limits and streaks

Use reported user timezones for daily response limits, expose couple streak state and reminders, and improve swipe and live-drawing synchronization with focused tests and documentation.

apps/api/drizzle/meta/_journal.json

@@ -92,6 +92,34 @@
       "when": 1787908500000,
       "tag": "0012_catalogue_field_parity",
       "breakpoints": true
+    },
+    {
+      "idx": 13,
+      "version": "7",
+      "when": 1787994900000,
+      "tag": "0013_daily_limit_local_reset",
+      "breakpoints": true
+    },
+    {
+      "idx": 14,
+      "version": "7",
+      "when": 1787994960000,
+      "tag": "0014_daily_limit_response_index",
+      "breakpoints": true
+    },
+    {
+      "idx": 15,
+      "version": "7",
+      "when": 1788081360000,
+      "tag": "0015_couple_streak_locality",
+      "breakpoints": true
+    },
+    {
+      "idx": 16,
+      "version": "7",
+      "when": 1788081420000,
+      "tag": "0016_streak_reminder_preference",
+      "breakpoints": true
     }
   ]
 }