diff --git a/drizzle/0014_open_occurrences.sql b/drizzle/0014_open_occurrences.sql
new file mode 100644
index 0000000..593a747
--- /dev/null
+++ b/drizzle/0014_open_occurrences.sql
@@ -0,0 +1 @@
+CREATE INDEX task_occurrences_open_idx ON task_occurrences (day_id) WHERE closed_at IS NULL;
diff --git a/drizzle/meta/0014_snapshot.json b/drizzle/meta/0014_snapshot.json
new file mode 100644
index 0000000..7a8a3e4
--- /dev/null
+++ b/drizzle/meta/0014_snapshot.json
@@ -0,0 +1,1233 @@
+{
+  "version": "6",
+  "dialect": "sqlite",
+  "id": "0f63b205-bad6-46af-8d16-2abc60ffc211",
+  "prevId": "4c5b56f0-04cd-405a-afdd-8e4ca3793332",
+  "tables": {
+    "combined_charts": {
+      "name": "combined_charts",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "habit_ids": {
+          "name": "habit_ids",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "settings": {
+          "name": "settings",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "combined_charts_user_idx": {
+          "name": "combined_charts_user_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "combined_charts_user_id_users_id_fk": {
+          "name": "combined_charts_user_id_users_id_fk",
+          "tableFrom": "combined_charts",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "discord_controls": {
+      "name": "discord_controls",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "action": {
+          "name": "action",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "payload": {
+          "name": "payload",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "used": {
+          "name": "used",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        }
+      },
+      "indexes": {
+        "discord_controls_expiry_idx": {
+          "name": "discord_controls_expiry_idx",
+          "columns": [
+            "expires_at"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "discord_controls_user_id_users_id_fk": {
+          "name": "discord_controls_user_id_users_id_fk",
+          "tableFrom": "discord_controls",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "discord_deliveries": {
+      "name": "discord_deliveries",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "image_hash": {
+          "name": "image_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "message_url": {
+          "name": "message_url",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "discord_deliveries_user_id_users_id_fk": {
+          "name": "discord_deliveries_user_id_users_id_fk",
+          "tableFrom": "discord_deliveries",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "discord_receipts": {
+      "name": "discord_receipts",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "response": {
+          "name": "response",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "discord_receipts_expiry_idx": {
+          "name": "discord_receipts_expiry_idx",
+          "columns": [
+            "expires_at"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "discord_receipts_user_id_users_id_fk": {
+          "name": "discord_receipts_user_id_users_id_fk",
+          "tableFrom": "discord_receipts",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "habit_calendar_settings": {
+      "name": "habit_calendar_settings",
+      "columns": {
+        "habit_id": {
+          "name": "habit_id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "settings": {
+          "name": "settings",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "habit_calendar_settings_habit_id_habits_id_fk": {
+          "name": "habit_calendar_settings_habit_id_habits_id_fk",
+          "tableFrom": "habit_calendar_settings",
+          "tableTo": "habits",
+          "columnsFrom": [
+            "habit_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "habit_days": {
+      "name": "habit_days",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "habit_id": {
+          "name": "habit_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "revision_id": {
+          "name": "revision_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "date": {
+          "name": "date",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "timezone": {
+          "name": "timezone",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "ends_at": {
+          "name": "ends_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "count_set": {
+          "name": "count_set",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "count": {
+          "name": "count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "done": {
+          "name": "done",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        }
+      },
+      "indexes": {
+        "habit_days_lookup_idx": {
+          "name": "habit_days_lookup_idx",
+          "columns": [
+            "habit_id",
+            "date",
+            "revision_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "habit_days_habit_id_habits_id_fk": {
+          "name": "habit_days_habit_id_habits_id_fk",
+          "tableFrom": "habit_days",
+          "tableTo": "habits",
+          "columnsFrom": [
+            "habit_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "habit_days_revision_id_habit_revisions_id_fk": {
+          "name": "habit_days_revision_id_habit_revisions_id_fk",
+          "tableFrom": "habit_days",
+          "tableTo": "habit_revisions",
+          "columnsFrom": [
+            "revision_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "habit_revisions": {
+      "name": "habit_revisions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "habit_id": {
+          "name": "habit_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "effective_date": {
+          "name": "effective_date",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "config": {
+          "name": "config",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "habit_revisions_date_idx": {
+          "name": "habit_revisions_date_idx",
+          "columns": [
+            "habit_id",
+            "effective_date",
+            "id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "habit_revisions_habit_id_habits_id_fk": {
+          "name": "habit_revisions_habit_id_habits_id_fk",
+          "tableFrom": "habit_revisions",
+          "tableTo": "habits",
+          "columnsFrom": [
+            "habit_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "habits": {
+      "name": "habits",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_date": {
+          "name": "created_date",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "materialized_through": {
+          "name": "materialized_through",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "calendar_revision": {
+          "name": "calendar_revision",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        }
+      },
+      "indexes": {
+        "habits_user_idx": {
+          "name": "habits_user_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "habits_user_id_users_id_fk": {
+          "name": "habits_user_id_users_id_fk",
+          "tableFrom": "habits",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "live_discord_cards": {
+      "name": "live_discord_cards",
+      "columns": {
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "channel_id": {
+          "name": "channel_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "message_id": {
+          "name": "message_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "message_url": {
+          "name": "message_url",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "nonce": {
+          "name": "nonce",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "theme": {
+          "name": "theme",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "image_hash": {
+          "name": "image_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dirty": {
+          "name": "dirty",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "error": {
+          "name": "error",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "retry_at": {
+          "name": "retry_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "live_discord_cards_user_id_users_id_fk": {
+          "name": "live_discord_cards_user_id_users_id_fk",
+          "tableFrom": "live_discord_cards",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "progress_events": {
+      "name": "progress_events",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "day_id": {
+          "name": "day_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "occurrence_id": {
+          "name": "occurrence_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "before": {
+          "name": "before",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "after": {
+          "name": "after",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "progress_events_day_idx": {
+          "name": "progress_events_day_idx",
+          "columns": [
+            "day_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "progress_events_day_id_habit_days_id_fk": {
+          "name": "progress_events_day_id_habit_days_id_fk",
+          "tableFrom": "progress_events",
+          "tableTo": "habit_days",
+          "columnsFrom": [
+            "day_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "reminder_deliveries": {
+      "name": "reminder_deliveries",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "slot": {
+          "name": "slot",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'*'"
+        },
+        "date": {
+          "name": "date",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "retry_at": {
+          "name": "retry_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "reminder_deliveries_user_date_slot_idx": {
+          "name": "reminder_deliveries_user_date_slot_idx",
+          "columns": [
+            "user_id",
+            "date",
+            "slot"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {
+        "reminder_deliveries_user_id_users_id_fk": {
+          "name": "reminder_deliveries_user_id_users_id_fk",
+          "tableFrom": "reminder_deliveries",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "reminder_settings": {
+      "name": "reminder_settings",
+      "columns": {
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "enabled": {
+          "name": "enabled",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "time": {
+          "name": "time",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'20:00'"
+        },
+        "reminders": {
+          "name": "reminders",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "quiet_start": {
+          "name": "quiet_start",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'22:00'"
+        },
+        "quiet_end": {
+          "name": "quiet_end",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'08:00'"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "reminder_settings_user_id_users_id_fk": {
+          "name": "reminder_settings_user_id_users_id_fk",
+          "tableFrom": "reminder_settings",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "reminder_worker_state": {
+      "name": "reminder_worker_state",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "blocked_until": {
+          "name": "blocked_until",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "sessions": {
+      "name": "sessions",
+      "columns": {
+        "token_hash": {
+          "name": "token_hash",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "sessions_user_id_idx": {
+          "name": "sessions_user_id_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        },
+        "sessions_expires_at_idx": {
+          "name": "sessions_expires_at_idx",
+          "columns": [
+            "expires_at"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "sessions_user_id_users_id_fk": {
+          "name": "sessions_user_id_users_id_fk",
+          "tableFrom": "sessions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "sharing_limits": {
+      "name": "sharing_limits",
+      "columns": {
+        "key": {
+          "name": "key",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "started_at": {
+          "name": "started_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "count": {
+          "name": "count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "task_occurrences": {
+      "name": "task_occurrences",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "day_id": {
+          "name": "day_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "task_id": {
+          "name": "task_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "done": {
+          "name": "done",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "expired_at": {
+          "name": "expired_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "closed_at": {
+          "name": "closed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "task_occurrences_day_idx": {
+          "name": "task_occurrences_day_idx",
+          "columns": [
+            "day_id"
+          ],
+          "isUnique": false
+        },
+        "task_occurrences_open_idx": {
+          "name": "task_occurrences_open_idx",
+          "columns": [
+            "day_id"
+          ],
+          "isUnique": false,
+          "where": "\"task_occurrences\".\"closed_at\" IS NULL"
+        }
+      },
+      "foreignKeys": {
+        "task_occurrences_day_id_habit_days_id_fk": {
+          "name": "task_occurrences_day_id_habit_days_id_fk",
+          "tableFrom": "task_occurrences",
+          "tableTo": "habit_days",
+          "columnsFrom": [
+            "day_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "discord_id": {
+          "name": "discord_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "username": {
+          "name": "username",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "global_name": {
+          "name": "global_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "avatar_hash": {
+          "name": "avatar_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "timezone": {
+          "name": "timezone",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'UTC'"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "users_discord_id_unique": {
+          "name": "users_discord_id_unique",
+          "columns": [
+            "discord_id"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    }
+  },
+  "views": {},
+  "enums": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "indexes": {}
+  }
+}
diff --git a/drizzle/meta/_journal.json b/drizzle/meta/_journal.json
index 97d62ed..af9b7b6 100644
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@@ -99,6 +99,13 @@
       "when": 1788860000000,
       "tag": "0013_habit_calendar_revision",
       "breakpoints": true
+    },
+    {
+      "idx": 14,
+      "version": "6",
+      "when": 1788860000001,
+      "tag": "0014_open_occurrences",
+      "breakpoints": true
     }
   ]
 }
diff --git a/src/db/schema.ts b/src/db/schema.ts
index 04ba11c..20053d9 100644
--- a/src/db/schema.ts
+++ b/src/db/schema.ts
@@ -1,3 +1,4 @@
+import { sql } from 'drizzle-orm';
 import { index, integer, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core";
 
 export const users = sqliteTable("users", {
@@ -48,7 +49,7 @@ export const habitDays = sqliteTable('habit_days', {
 export const taskOccurrences = sqliteTable('task_occurrences', {
   id: text('id').primaryKey(), dayId: integer('day_id').notNull().references(() => habitDays.id), taskId: text('task_id').notNull(), name: text('name').notNull(),
   done: integer('done', { mode: 'boolean' }).notNull().default(false), expiredAt: integer('expired_at'), closedAt: integer('closed_at'), updatedAt: integer('updated_at').notNull(),
-}, t => [index('task_occurrences_day_idx').on(t.dayId)]);
+}, t => [index('task_occurrences_day_idx').on(t.dayId), index('task_occurrences_open_idx').on(t.dayId).where(sql`${t.closedAt} IS NULL`)]);
 export const progressEvents = sqliteTable('progress_events', {
   id: integer('id').primaryKey({ autoIncrement: true }), dayId: integer('day_id').notNull().references(() => habitDays.id), occurrenceId: text('occurrence_id'),
   before: text('before', { mode: 'json' }).$type<unknown>().notNull(), after: text('after', { mode: 'json' }).$type<unknown>().notNull(), createdAt: integer('created_at').notNull(),
diff --git a/src/habits/performance.test.ts b/src/habits/performance.test.ts
index c727950..9421e09 100644
--- a/src/habits/performance.test.ts
+++ b/src/habits/performance.test.ts
@@ -44,3 +44,16 @@ test('calendar summaries omit editor payloads and mutation versions cover histor
     expect((await f.json(`/habits/${habit.id}/days/2026-09-04`)).tasks[0].done).toBe(true);
   } finally { f.close(); }
 });
+
+test('unchanged dashboard and calendar reads write no rows after synchronization', async () => {
+  const f = fixture();
+  try {
+    const habit = await f.json('/habits', 'POST', {name:'Tasks', method:'tasks', tasks:[{name:'Read'}]}, 201);
+    f.setTime('2027-09-04T12:00:00Z');
+    await f.json('/today');
+    const before = (f.sqlite.query('SELECT total_changes() AS n').get() as {n:number}).n;
+    await f.json('/today');
+    await f.json(`/habits/${habit.id}/calendar?from=2027-09-01&to=2027-09-04&compact=true`);
+    expect((f.sqlite.query('SELECT total_changes() AS n').get() as {n:number}).n).toBe(before);
+  } finally {f.close();}
+});
diff --git a/src/habits/service.ts b/src/habits/service.ts
index 7b291bd..bd63456 100644
--- a/src/habits/service.ts
+++ b/src/habits/service.ts
@@ -1,4 +1,4 @@
-import { and, asc, desc, eq, inArray, lte, gte, gt, lt, sql } from 'drizzle-orm';
+import { and, asc, desc, eq, inArray, lte, gte, gt, lt, or, isNull, sql } from 'drizzle-orm';
 import type { AppDatabase } from '../auth';
 import type { PublicUser } from '../shared/user';
 import { habits, habitRevisions, habitDays, taskOccurrences, progressEvents, habitCalendarSettings, combinedCharts, users } from '../db/schema';
@@ -133,7 +133,7 @@ export class HabitService {
     this.owned(id);
     this.db.transaction(() => {
       this.db.insert(habitRevisions).values({ habitId: id, effectiveDate: this.today, config, createdAt: this.now }).run();
-      this.materialize(this.owned(id));
+      this.materialize(this.owned(id), this.today, true);
       this.changed(id);
     });
     return this.current(id);
@@ -157,17 +157,23 @@ export class HabitService {
   }
   sync() {
     this.db.transaction(() => {
-      for (const habit of this.db.select().from(habits).where(eq(habits.userId, this.user.id)).all()) this.materialize(habit);
-      // Record the original deadline even after downtime. Only active day snapshots expire.
+      for (const habit of this.pending()) this.materialize(habit);
+      // Start with the small partial index of open occurrences rather than
+      // revisiting every historical snapshot on every unchanged request.
       this.db.run(sql`UPDATE task_occurrences SET
         expired_at = CASE WHEN done = 0 THEN COALESCE(expired_at, (SELECT ends_at FROM habit_days WHERE id = task_occurrences.day_id)) ELSE expired_at END,
         closed_at = (SELECT ends_at FROM habit_days WHERE id = task_occurrences.day_id)
-        WHERE closed_at IS NULL AND day_id IN (
-          SELECT d.id FROM habit_days d JOIN habits h ON h.id = d.habit_id
-          WHERE h.user_id = ${this.user.id} AND d.ends_at <= ${this.now}
+        WHERE id IN (
+          SELECT o.id FROM task_occurrences o INDEXED BY task_occurrences_open_idx
+          CROSS JOIN habit_days d ON d.id = o.day_id
+          CROSS JOIN habits h ON h.id = d.habit_id
+          WHERE o.closed_at IS NULL AND h.user_id = ${this.user.id} AND d.ends_at <= ${this.now}
           AND d.id = (SELECT MAX(d2.id) FROM habit_days d2 WHERE d2.habit_id = d.habit_id AND d2.date = d.date))`);
     });
   }
+  private pending() {
+    return this.db.select().from(habits).where(and(eq(habits.userId, this.user.id), or(isNull(habits.materializedThrough), lt(habits.materializedThrough, this.today)))).all();
+  }
   private invalidate(id: string) {
     this.ranges.delete(id); this.revisionRanges.delete(id); this.countCache.delete(id); this.revisionCache.delete(id); this.recordsCache.delete(id); this.occurrencesCache.delete(id); this.ownedCache.delete(id);
   }
@@ -195,9 +201,11 @@ export class HabitService {
     }
     return occurrences;
   }
-  private materialize(habit: Habit) {
-    let date = habit.materializedThrough ?? habit.createdDate;
-    while (date <= this.today) {
+  private materialize(habit: Habit, through = this.today, force = false) {
+    let date = force ? through : habit.materializedThrough ? addDays(habit.materializedThrough, 1) : habit.createdDate;
+    if (date > through) return;
+    this.loadRevisions(habit.id, date, through);
+    while (date <= through) {
       const revision = this.revision(habit.id, date)!;
       const existing = this.db.select().from(habitDays).where(and(eq(habitDays.habitId, habit.id), eq(habitDays.date, date))).orderBy(desc(habitDays.id)).get();
       if (!existing || existing.revisionId !== revision.id) {
@@ -222,7 +230,7 @@ export class HabitService {
       }
       date = addDays(date, 1);
     }
-    this.db.update(habits).set({ materializedThrough: this.today }).where(eq(habits.id, habit.id)).run();
+    this.db.update(habits).set({ materializedThrough: through }).where(eq(habits.id, habit.id)).run();
   }
   private counts(id: string) {
     const cached = this.countCache.get(id); if (cached) return cached;