release.2026-09-16T13-34-21Z.3121

## Feature Updates
- Account deletion now uses a unified full-page flow across web and mobile web, with actionable guidance to help resolve spaces blocking deletion.
- Imported `.tea` projects now retain required integration and secret placeholders without credentials, clearly showing the connections needed and allowing authorization at any time. Legacy export files remain supported.
- Integration authorization is now managed through the Integrations dialog, while automation enablement is controlled separately for each workflow.
- App Builder now displays the last saved preview during startup and preserves a usable preview if background setup fails.

## Bug Fixes & Improvements
- During response runs, tool and image generation rows now remain collapsed by default to reduce distracting animations and keep the chat interface stable. Failed rows can still be expanded when attention is required.
- Fixed an issue where imported AI classification and generation fields referenced the original project; this could also cause misleading circular dependency errors in duplicated or published templates.
- Improved App Builder startup and state handling to reduce instances of incorrectly displaying stopped or failed states.
- Refined mobile interface details, including input field visibility in dark mode, the Routine chat icon, app icon proportions, Android home screen widgets, and new chat behavior.
- Improved favicon clarity in browser tabs, link previews, and other clients, especially on high-density displays.