<!--
Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md
-->
<!-- CURSOR_SUMMARY -->
---
> [!NOTE]
> Adds a new Cmd+K spotlight command palette with AI docs chat and app
navigation/install previews (dev-only trigger), plus a mock AI API,
design guide consolidation, and minor layout/UX tweaks.
>
> - **Dashboard UX**:
> - **Command Palette (Cmd+K)**: Implement `CmdKSearch` with nested
results, visual previews, and keyboard navigation; `CmdKTrigger` added
to header (development only).
> - **App Discovery**: Show installed apps and uninstalled apps with
preview, screenshots, tags, and one-click enable via
`getUninstalledAppIds`.
> - **AI Docs Chat**: Add `AIChatPreview` with streaming UI; integrates
with the palette.
> - **Mock AI API**: New `POST /api/ai-search` streaming endpoint using
`ai` mock model and system prompt.
> - **Sidebar/Layout**: Integrate palette into `sidebar-layout.tsx`;
small header/spacing tweaks; minor `PacificaCard` class fix;
`StackCompanion` drawer visibility/animation refinements.
> - **Dev UX**: New dismissible `DevelopmentPortDisplay` and imported
into root layout.
> - **Dependencies**: Add `ai`, `@ai-sdk/openai`, and `react-markdown`
to dashboard.
> - **Docs**: Replace `DESIGN_GUIDE.md` with comprehensive
`DESIGN-GUIDE.md`; update `AGENTS.md` with env var prefix rule.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
8640d15550. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* AI-powered command palette/spotlight with rich previews, app
discovery, and streaming AI responses.
* Docs-backed AI search and an in-app conversational AI preview for
contextual queries.
* Dismissible development port banner visible in dev builds.
* **Bug Fixes / UX**
* Header layout and drawer/handle behavior improved for smoother
interactions.
* **Documentation**
* Dashboard design guide consolidated and replaced with a single
comprehensive design-system guide.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Konstantin Wohlwend <n2d4xc@gmail.com>
