ICS Toolkit

### Added - Preview calendar imports with event selection, compatibility details, duplicate detection, cancellation, per-event results, retry, and session undo for unchanged imported events. Series that cannot be fully verified remain in Calendar with an explanation. - Import supported advanced repeating rules and edited occurrences as complete series. - Export multiple calendars as separate files or a combined ICS file; choose all dates, the next 12 months, or a custom inclusive date range. Bounded exports contain individual occurrences. - Open ICS documents from Files and other apps, with a choice of editing or importing. - Save named drafts, search and rename library entries, and display persistence failures without overwriting unreadable files. - Choose weekly days and ordinal monthly recurrence patterns. - Show Server Mode connection activity, troubleshooting steps, and a diagnostic report with calendar-property rejection reasons, without calendar content or credentials. - Show the app version and build number beneath the Server Mode tile on the home screen. - Replace the Help banner and long page with a list of topics that open on separate screens, including app information and a clickable © 2026 prawel.pl link. - Provide Create ICS from Template and Export Calendar to ICS actions in Shortcuts. ### Fixed - Accept and retain calendar order, time zones, default reminders, and other client preferences in Server Mode, including for read-only calendars, to prevent repeated calendar-property update failures. - Prevent the Active Connections display from flickering during brief reconnects by delaying decreases for two seconds; stopping the server clears it immediately. - Fix Server Mode calendar moves when clients keep the event filename or use non-UUID filenames, including MOVE requests and creating the destination event before deleting the source. - Keep moved eve

### Added - Export the synced events from a selected device calendar together in one ICS file, including read-only calendars. - Preserve repeating-event rules and edited occurrences in calendar exports, with stable event identifiers and shared time-zone definitions. - Add a dedicated Export Calendar screen with calendar selection, progress, cancellation, event counts, and Save/Share ICS actions. - Search and choose an individual event from a multi-event ICS file, then edit and save it as a separate file. ### Changed - Introduce a home screen with five prominent actions: Create Events, Edit Events, Export Calendars, Import Calendars, and Server Mode. - Keep Templates in the event editor and remove its separate home-screen item. - Give Server Mode its own main action and update Help to match the new navigation. ### Fixed - Scan calendar history and future events in EventKit-safe windows instead of losing events beyond a single query's supported range. - Correct absolute reminder offsets, all-day recurrence dates, recurrence end dates, exception dates, and carriage-return escaping in shared calendar serialization. - Include historical daylight-saving transitions and applicable future time-zone rules in calendar exports.

### Fixed - Recognize Microsoft/Outlook all-day event markers and include the marker when serving all-day events through CalDAV. - Keep all-day events independent of a time zone when reading and writing through EventKit. - Set calendar and time-zone values before dates to stabilize event saves and repeated synchronization. - Normalize plain and Apple structured locations so escaped line breaks, repeated whitespace, and punctuation do not accumulate across edits. - Preserve Apple travel and structured-location metadata while applying normalized location text.

### Added - Introduce foreground Server Mode for sharing selected device calendars with compatible CalDAV clients over a local network. - Add persistent calendar selection, calendar-creation destination, local hostname, port, and Prevent Auto-Lock settings. - Store pairing credentials in Keychain, with reveal, copy, and regeneration controls, and protect calendar access with Digest authentication. - Support calendar discovery, event reads, conditional event creation and updates, event deletion, and event copy/move operations. - Add paged initial synchronization and incremental updates, with stable resource identities, change tracking, and deletion records. - Support recurring series, edited occurrences, representable reminders, and Apple structured-location and travel metadata. - Allow clients to create, rename, recolor, and describe calendars; restrict remote calendar deletion to calendars created through Server Mode. - Show live server status and connection details, stop serving when the app enters the background, and hide credentials in the background app snapshot. ### Fixed - Keep the listener accepting new connections while limiting simultaneous clients. - Improve Apple Calendar authentication, initial event discovery, event edits, deletes, duplication, and repeat-setting changes. - Preserve existing event data when incoming client properties cannot be represented by EventKit. - Correct all-day event end dates and Apple structured-location text decoding.

### Added - Add explicit time-zone selection, daily/weekly/monthly/yearly recurrence controls, and multiple reminders. - Add event categories, status, visibility, and free/busy availability. - Autosave the current draft and support reusable templates with refreshed dates and event identities. - Add a compatibility review, event summary, and raw ICS preview before saving, sharing, or adding an event to Calendar. - Add direct sharing through the system share sheet. - Preserve more imported data, including advanced recurrence rules, exceptions, alarms, attachment metadata, and unsupported properties that can be carried forward. - Add meeting validation and stable event identifiers for invitation revisions. ### Changed - Consolidate event parsing and generation into a shared codec and add automated regression coverage.