#### PR Dependency Tree
* **PR #14510** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved calendar sync reliability with exponential backoff for
repeated failures.
* Better handling of token refresh failures with automatic account
invalidation and cleanup when needed.
* Subscriptions are now automatically disabled and related events
removed when the calendar provider reports missing resources.
* **Tests**
* Added comprehensive tests covering sync failures, backoff behavior,
token refresh handling, skipping retries during backoff, and recovery.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
#### PR Dependency Tree
* **PR #14452** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved null-safety, dependency tracking, upload validation, and
error logging for more reliable uploads, clipboard, calendar linking,
telemetry, PDF/theme printing, and preview/zoom behavior.
* Tightened handling of all-day calendar events (missing date now
reported).
* **Deprecations**
* Removed deprecated RadioButton and RadioButtonGroup; use RadioGroup.
* **Chores**
* Unified and upgraded linting/config, reorganized imports, and
standardized binary handling for more consistent builds and tooling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
fix#13531
#### PR Dependency Tree
* **PR #14372** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* CalDAV calendar integration: link and sync CalDAV-compatible calendars
(discovery, listing, event sync).
* New UI flow and dialog to link CalDAV accounts with provider
selection, credentials, and display name.
* **API / Config**
* Server exposes CalDAV provider presets in config and new GraphQL
mutation to link CalDAV accounts.
* New calendar config section for CalDAV with validation and defaults.
* **Tests**
* Comprehensive CalDAV integration test suite added.
* **Chores**
* Removed analytics tokens from build configuration and reduced Cloud
E2E test shards.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
#### PR Dependency Tree
* **PR #14247** 👈
* **PR #14248**
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Google Calendar integration (disabled by default): link/unlink
accounts, OAuth flow, webhooks, real-time push, background sync,
workspace calendars with customizable items and date-range event
viewing.
* **GraphQL / Client**
* New queries & mutations for accounts, subscriptions, events,
providers, and workspace calendar management.
* **Localization**
* Added localized error message for calendar provider request failures.
* **Tests**
* Backend tests covering sync, webhook renewal, and error/error-recovery
scenarios.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
DarkSky