v1.15.11

## Core
### Improvements
- Added `headerTimeout` config for provider requests, with a 10s default for default OpenAI setups.
- Experimental background agents now push updates without polling.
- You can now set only `modalities.input` or `modalities.output` in config. (@robposch)
- Remote-backed projects now resolve a stable project identity.

### Bugfixes
- Dynamically added MCP servers now disconnect cleanly when removed.
- DigitalOcean inference now uses your OAuth token directly instead of creating a MAK. (@Spherrrical)
- Config loading now falls back cleanly when user info is unavailable.
- Fixed Google tool calling after the upstream tool ID regression.
- Experimental flags can now override the umbrella experimental flag.
- Resumed sessions no longer continue orphaned interrupted tools. (@edevil)
- OpenAI reasoning summaries now render as separate blocks.
- Updated Google Vertex support for reasoning signatures.
- The shell tool now advertises your configured timeout to the model.

## TUI
### Improvements
- Made the prompt resize with terminal width and added prompt size config. (@bjschafer)

### Bugfixes
- Accelerated diff viewer scrolling.
- External editors now open from the worktree directory when available.

## Desktop
### Improvements
- Refined the Desktop v2 home screen, prompt, status popover, and session controls.

### Bugfixes
- Fixed V2 titlebar errors when a session sync cache was deleted. (@Eric-Guo)
- Web deployments no longer run desktop health checks.
- Duplicate server connections are now merged in the server list.
- Stabilized virtualized session timeline interactions.
- Fixed the white flash when restoring the desktop window.

## Extensions
### Improvements
- Added a `dispose` hook for plugins.

### Bugfixes
- Fixed Codex plugin requests to send the expected session ID header.

**Thank you to 7 community contributors:**
- @jerome-benoit:
  - fix(nix): re-inherit patches in desktop, ad-hoc sign .app on darwin (#27869)
- @edevil:
  - fix(session): exclude orphaned interrupted tools from run-loop continuation (#26178)
- @bjschafer:
  - feat(tui): make prompt size responsive and configurable (#28255)
- @robposch:
  - tweak (config): make modalities input/output fields optional so that u can specify one without both being required  (#29268)
- @Eric-Guo:
  - fix(app): handle deleted session sync cache in V2 titlebar (#29328)
- @StarpTech:
  - docs(web): update LSP docs wording (#29435)
  - docs: add tip to lsp section (#29444)
- @Spherrrical:
  - fix(digitalocean): use OAuth token directly for inference instead of creating MAK (#28897)