feat: p2 batch 28-31 reminders lists comments bang stats

Calendar events support multiple reminder offsets with presets and per-user defaults.

Lists index adds inline task entry and list property editing.

Generic entity comments on list detail. New bangs.stats dashboard widget.

Closes Gitea #28, #29, #30, #31. Migrations 0022 and 0023.

docs/tasks/89-calendar-reminders-overhaul.md

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+# 89 — Calendar reminders overhaul
+
+## Goal
+
+Replace the single "Remind me 30 min before" checkbox with multiple reminders, presets, and custom offsets.
+
+## What we decided
+
+- Store multiple reminder rows per calendar event in the generic `reminders` table (drop one-per-entity unique constraint).
+- Offsets are minutes before event start; presets + custom value/unit in UI.
+- Per-user default offsets live on `users.default_event_reminder_offsets` (jsonb, default `[30]`).
+- Notes/garden keep single-reminder behavior via delete-then-insert in `scheduleReminder`.
+
+## Depends on
+
+- 41 (reminders engine)
+
+## Scope
+
+- Migration: drop `reminders_entity_unique`, add `offset_minutes`, add user default column.
+- `_core/reminders.ts`: `syncRemindersForEntity`, refactor `scheduleReminder`.
+- Shared `ReminderPicker` component + offset helpers.
+- Calendar create/edit + quick-add dialogs; sync reminders on create/update/delete.
+- Optional: settings field for default reminder offsets.
+
+## Out of scope
+
+- Recurring reminders, snooze.
+
+## Acceptance criteria
+
+- [x] Users can add/remove multiple reminders on an event
+- [x] Preset list and custom offset both work
+- [x] Reminders fire via existing notification bus
+- [x] Per-user default reminder preferences (stored + applied on new events)
+
+## Notes
+
+- Gitea: [ginnoir/famapp#28](https://gitea.ginnoir.com/ginnoir/famapp/issues/28)