feat: add showMultiDayTimes property to calendar component

[iobuhov]

Summary

This PR adds the showMultiDayTimes property to the calendar component.

Migrated from #2121 (cherry-picked onto fresh main branch to resolve conflicts).

Original PR

#2121

🤖 Generated with Claude Code

[gjulivan]

https://mendix.atlassian.net/browse/WC-3457

[github-actions]

AI Code Review

⚠️ Approved with suggestions — low-severity items only, safe to merge

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What was reviewed

File	Change
packages/pluggableWidgets/calendar-web/src/Calendar.xml	Added showMultiDayTimes boolean property (default false)
packages/pluggableWidgets/calendar-web/typings/CalendarProps.d.ts	Added showMultiDayTimes: boolean to container and preview props
packages/pluggableWidgets/calendar-web/src/helpers/CalendarPropsBuilder.ts	Passed showMultiDayTimes through and added eventTimeRangeStartFormat / eventTimeRangeEndFormat
packages/pluggableWidgets/calendar-web/src/__tests__/Calendar.spec.tsx	Added tests for pass-through, start/end formats, and showEventDate interaction
packages/pluggableWidgets/calendar-web/src/__tests__/__snapshots__/Calendar.spec.tsx.snap	Updated snapshot with data-show-multi-day-times, data-min, data-max attributes
packages/pluggableWidgets/calendar-web/CHANGELOG.md	Added [Unreleased] entry for new property
pnpm-workspace.yaml	Added recursiveInstall: true, reformatted with consistent indentation
packages/pluggableWidgets/calendar-web/openspec/changes/add-show-multi-day-times/	OpenSpec artifacts (proposal, spec, tasks)

Skipped (out of scope): pnpm-lock.yaml

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Findings

⚠️ Low — eventTimeRangeStartFormat / eventTimeRangeEndFormat always set regardless of showMultiDayTimes

File: packages/pluggableWidgets/calendar-web/src/helpers/CalendarPropsBuilder.ts lines 169–178
Note: eventTimeRangeStartFormat and eventTimeRangeEndFormat are set whenever a timeFormat is configured, independently of whether showMultiDayTimes is true or false. This is likely intentional — react-big-calendar only uses these formats when showMultiDayTimes is enabled — but it is worth confirming. If the library uses them for other purposes when showMultiDayTimes=false, unexpected time labels could appear on events. A comment confirming the intent (or gating behind showMultiDayTimes) would prevent future confusion.

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⚠️ Low — pnpm-workspace.yaml adds recursiveInstall: true without explanation

File: pnpm-workspace.yaml line 1
Note: Adding recursiveInstall: true changes workspace install behaviour for all packages in the monorepo. This is a cross-cutting side-effect unrelated to the feature being implemented. If it was intentional (e.g. to fix an install issue found during development), a brief commit note or PR comment explaining why would help reviewers assess the risk. If it was unintentional, it should be reverted.

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Positives

• The default false correctly preserves existing all-day row behaviour for multi-day events — zero-risk for existing consumers.
• showEventDate=false correctly blanks all three time-range formats (eventTimeRangeFormat, eventTimeRangeStartFormat, eventTimeRangeEndFormat) atomically at the end of buildFormats, which prevents any ordering dependency.
• Test suite covers all four scenarios from the spec: pass-through flag, start/end format content and separator, pattern consistency across the three format functions, no formats when timeFormat is unconfigured, blanking on showEventDate=false, and preservation on showEventDate=true. Thorough and easy to read.
• CalendarProps.d.ts is updated in both CalendarContainerProps and CalendarPreviewProps — no XML/TS drift.
• XML property key is lowerCamelCase (showMultiDayTimes) and matches the TypeScript prop exactly — consistent with repo conventions.
• CHANGELOG entry is user-facing and describes observable behaviour, not implementation details — matches repo convention.