Remove Event class usage from event processors

[rfc2822]

Key change: LegacyAndroidEventProcessor becomes AndroidEventProcessor by not using the deprecated Event class anymore.

• Event field processors: replace Event by AssociatedEvents
• Add PRODID to AssociatedEvents so that MUTATORS can be processed/stored.
• Removed deprecated LegacyAndroidCalendar

[Copilot]

Pull Request Overview

This PR migrates calendar mapping from the deprecated at.bitfire.ical4android.Event to ical4j’s VEvent and related types, removing legacy pathways and aligning processors/tests with ical4j’s property/component model. It also introduces a new AndroidEventProcessor that returns AssociatedEvents, adds PRODID generation via a new ProdIdGenerator, and removes the MutatorsProcessor and LegacyAndroidCalendar.

• Replace Event with VEvent across processors and tests
• Introduce AndroidEventProcessor returning AssociatedEvents with pluggable PRODID generation; remove MutatorsProcessor and LegacyAndroidCalendar
• Update property handling to use ical4j properties/components (Url, Uid, Summary, Status, DtStart/DtEnd, Transp, Categories, Attendee, etc.)

Reviewed Changes

Copilot reviewed 50 out of 50 changed files in this pull request and generated 6 comments.

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File	Description
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/UrlProcessorTest.kt	Update tests to VEvent and ical4j Url property usage
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/UnknownPropertiesProcessorTest.kt	Update tests to VEvent; assert against properties; note: assertTrue import removed but still used
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/UidProcessorTest.kt	Update tests to VEvent and Uid property value
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/TitleProcessorTest.kt	Update tests to VEvent Summary property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/StatusProcessorTest.kt	Update tests to VEvent Status property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/StartTimeProcessorTest.kt	Update tests to VEvent DtStart (startDate)
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/SequenceProcessorTest.kt	Update tests to VEvent Sequence property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/RemindersProcessorTest.kt	Update tests to VEvent alarms via ical4j
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/RecurrenceFieldProcessorTest.kt	Update tests to use getProperty/getProperties for RRULE/RDATE/EXRULE/EXDATE
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/OriginalInstanceTimeProcessorTest.kt	Update tests to VEvent RecurrenceId handling
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/OrganizerProcessorTest.kt	Update tests to VEvent Organizer; remove isOrganizer coverage
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/MutatorsProcessorTest.kt	Remove tests tied to MutatorsProcessor (deleted)
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/LocationProcessorTest.kt	Update tests to VEvent Location property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/EndTimeProcessorTest.kt	Update tests to VEvent DtEnd (endDate)
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/DurationProcessorTest.kt	Update tests to VEvent DtEnd and clear Duration
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/DescriptionProcessorTest.kt	Update tests to VEvent Description property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/ColorProcessorTest.kt	Update tests to VEvent Color property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/CategoriesProcessorTest.kt	Update tests to VEvent Categories property via TextList
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/AvailabilityProcessorTest.kt	Update tests to VEvent Transp property (OPAQUE/TRANSPARENT)
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/AttendeesProcessorTest.kt	Update attendee tests to ical4j Attendee property API
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/processor/AccessLevelProcessorTest.kt	Update classification tests to Clazz property
lib/src/test/kotlin/at/bitfire/synctools/mapping/calendar/AndroidEventProcessorTest.kt	Add tests for new AndroidEventProcessor, exceptions handling, EXDATE, and PRODID generation
lib/src/main/kotlin/at/bitfire/synctools/storage/calendar/AndroidEvent2.kt	Remove MUTATORS_SEPARATOR constant (moved to AndroidEventProcessor)
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/UrlProcessor.kt	Port to VEvent and ical4j Url property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/UnknownPropertiesProcessor.kt	Port to VEvent; add unknown properties directly to ical4j property list
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/UidProcessor.kt	Port to VEvent; use ical4j Uid property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/TitleProcessor.kt	Port to VEvent; use Summary property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/StatusProcessor.kt	Port to VEvent; add Status property conditionally
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/StartTimeProcessor.kt	Port to VEvent; set DtStart
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/SequenceProcessor.kt	Port to VEvent; set Sequence
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/RemindersProcessor.kt	Port to VEvent; add VAlarm components
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/RecurrenceFieldsProcessor.kt	Port to VEvent; add RRULE/RDATE/EXRULE/EXDATE properties
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/ProdIdGenerator.kt	Add functional interface to generate PRODID
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/OriginalInstanceTimeProcessor.kt	Port to VEvent; set RecurrenceId for exceptions
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/OrganizerProcessor.kt	Port to VEvent; set Organizer only for group-scheduled events
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/MutatorsProcessor.kt	Remove processor (replaced by PRODID generator logic)
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/LocationProcessor.kt	Port to VEvent; set Location property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/EndTimeProcessor.kt	Port to VEvent; set DtEnd
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/DurationProcessor.kt	Port to VEvent; compute and set DtEnd, clear duration
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/DescriptionProcessor.kt	Port to VEvent; set Description property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/ColorProcessor.kt	Port to VEvent; map Android color to ical4j Color property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/CategoriesProcessor.kt	Port to VEvent; set Categories from extended properties
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/AvailabilityProcessor.kt	Port to VEvent; set TRANSP based on availability
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/AttendeesProcessor.kt	Port to VEvent; add Attendee properties
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/AndroidEventFieldProcessor.kt	Change processor interface to accept VEvent
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/processor/AccessLevelProcessor.kt	Port to VEvent; set Clazz property
lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/AndroidEventProcessor.kt	New VEvent-based processor; returns AssociatedEvents and generates PRODID
lib/src/main/kotlin/at/bitfire/synctools/icalendar/AssociatedComponents.kt	Extend structure to include optional prodId
lib/src/main/kotlin/at/bitfire/ical4android/LegacyAndroidCalendar.kt	Remove legacy calendar wrapper
lib/src/main/kotlin/at/bitfire/ical4android/Event.kt	Update deprecation to point to AssociatedEvents

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[Copilot]

Pull Request Overview

Copilot reviewed 52 out of 52 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

lib/src/main/kotlin/at/bitfire/synctools/mapping/calendar/AndroidEventProcessor.kt:1

• Extra space before the .append method call. Should be builder.append without the space.

/*

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[ArnyminerZ]

Just a small detail, it's not important, but may be useful for migrations.