Project workflows, Native PPT, clearer Libraries, and safer automation

- Project-powered work: Attach Skills to a Project so every Task can use the right capabilities, and organize related Connectors directly from the Project Library.
- Faster Project setup: Start from a Project template, use the reorganized Project sidebar, and search Connectors by name when adding an integration.
- Native PPT by default: Slides mode now creates editable PowerPoint files through the bundled PPT workflow by default.
- A clearer, steadier Library: Progressive file cards, reliable pagination, exact time ordering, and support for manually added Project files make larger Libraries easier to browse.
- More resilient Tasks: Interrupted work now restores its execution timeline, nested tool failures remain visible, and Auto shows the model that actually handled the Task.
- Safer timers: Durable replay state and stronger command and delivery guards reduce duplicate notifications and unsafe retries.
- More reliable Project summaries: Historical Projects are backfilled, malformed summaries retry safely, and duplicate links resolve consistently.
- Four new web tools: Try Threads Video Downloader, Minecraft Banner Maker, Banner Maker, and Bio Generator.