fix(03): CR-01 preserve RRULE on edit-as-move (forward source rule to create row)

apps/api/src/broker/outboxWorker.ts

@@ -282,6 +282,23 @@ async function dispatchRow(row: OutboxRow): Promise<DispatchResult> {
     } catch {
       return { success: false, conflict: false, hardFail: true, transient: false, error: 'payload parse failed' }
     }
+    // CR-01: edit-as-move RRULE preservation. The same-calendar `update` branch
+    // preserves a recurring series' RRULE by reading rawVevent; the `create` branch
+    // (used for the create half of an edit-as-move, D-04) has no source for the
+    // original RRULE because it writes under a brand-new uid. The edit route extracts
+    // the source event's RRULE and stashes it on the payload as `_preservedRrule` so
+    // the worker can re-apply it here. An explicit `recurrence` on the payload still
+    // wins (deliberate user change); the preserved RRULE only fills the gap when the
+    // edit omitted recurrence — matching the update-branch semantics and the WR-01 fix.
+    const hasExplicitRecurrence = Object.prototype.hasOwnProperty.call(fields, 'recurrence')
+    const rruleFromPayload =
+      fields.recurrence && fields.recurrence !== 'none'
+        ? RRULE_PRESETS[fields.recurrence as string]
+        : undefined
+    const preservedRrule =
+      typeof fields._preservedRrule === 'string' && fields._preservedRrule.length > 0
+        ? fields._preservedRrule
+        : undefined
     const { icsString } = buildVeventString({
       uid: row.uid,
       summary: fields.title as string,
@@ -290,7 +307,7 @@ async function dispatchRow(row: OutboxRow): Promise<DispatchResult> {
       dtend: fields.allDay ? (fields.end as string) : new Date(fields.end as string),
       location: fields.location as string | undefined,
       description: fields.description as string | undefined,
-      rruleString: fields.recurrence && fields.recurrence !== 'none' ? RRULE_PRESETS[fields.recurrence as string] : undefined,
+      rruleString: hasExplicitRecurrence ? rruleFromPayload : (preservedRrule ?? rruleFromPayload),
     })
     // Build a minimal DAVCalendar for the write wrapper (only url is needed)
     const davCalendar = { url: row.calendarUrl } as Parameters<typeof createCalendarEvent>[1]