Add weekly layout to record calendar (#22819)

## Summary

- Add a week layout to record calendar views and persist the selected
layout.
- Render `DATE` calendars as an all-day week and `DATE_TIME` calendars
as an hourly week.
- Add an optional end date field across calendar configuration,
metadata, persistence, and complete-view upserts.
- Use configured end values for ranged and multi-day events, with a
one-hour fallback when a `DATE_TIME` end is absent or invalid.
- Keep calendar cards consistent with the existing compact view,
including checkbox selection and whole-card record opening.
- Gate the weekly layout and end-date behavior behind the public Labs
`IS_CALENDAR_WEEK_VIEW_ENABLED` workspace feature flag.

## Week interactions

- Show overlapping timed events side by side and cap the visible records
at two per day.
- Display start and end times on timed cards, enforce a readable
30-minute minimum height, and keep today’s text contrast stronger.
- Drag timed events between days and times with 30-minute snapping while
preserving their duration, including zero-duration events.
- Show a create button when hovering a 30-minute slot; keyboard users
can focus a day, move the slot with the arrow keys, and reach the same
contextual action.
- Initialize new records with the selected slot time and a compatible
writable end value one hour later.
- Show the workspace time zone and current-time indicator in timed
weeks; date-only weeks keep the all-day section without an hourly grid.

## Configuration and data loading

- Only allow end fields that match the start field type, and prevent
selecting the same field for both boundaries.
- Load records whose ranges overlap the visible period so month and week
layouts display the same relevant records.
- Resolve and persist calendar end fields when updating existing views
through `upsert_complete_view`.
- Fall back to Month and ignore the configured end field while the flag
is disabled, without overwriting either persisted setting, so
re-enabling restores the previous configuration.
- Expose the flag in Labs and keep it default-off for workspaces without
a stored value; enable it in the development seeder.

<img width="1285" height="808" alt="Screenshot 2026-07-15 at 15 50 17"
src="https://github.com/user-attachments/assets/b7e3f7f1-ca77-492f-8cce-cca186ebca0b"
/>

packages/twenty-front/src/modules/views/hooks/useCreateViewFromCurrentView.ts

@@ -74,6 +74,7 @@ export const useCreateViewFromCurrentView = (viewBarComponentId?: string) => {
         icon,
         mainGroupByFieldMetadataId,
         calendarFieldMetadataId,
+        calendarEndFieldMetadataId,
         type,
         visibility,
       }: Partial<
@@ -84,6 +85,7 @@ export const useCreateViewFromCurrentView = (viewBarComponentId?: string) => {
           | 'icon'
           | 'mainGroupByFieldMetadataId'
           | 'calendarFieldMetadataId'
+          | 'calendarEndFieldMetadataId'
           | 'type'
           | 'visibility'
         >
@@ -140,6 +142,10 @@ export const useCreateViewFromCurrentView = (viewBarComponentId?: string) => {
               viewType === ViewType.CALENDAR
                 ? calendarFieldMetadataId
                 : undefined,
+            calendarEndFieldMetadataId:
+              viewType === ViewType.CALENDAR
+                ? calendarEndFieldMetadataId
+                : undefined,
             visibility,
           },
         },