Courtney Webster

This commit performs **maintenance** and **refactoring** within the **Chat feature's UI components**. It **refactors** the web context detection logic and **enhances** the `SignInTitleBarEntry` component in the **Chat setup** by introducing `updateLabel` and `updateEnabled` methods, allowing for dynamic control over its display. Concurrently, a minor **stylistic fix** corrects the capitalization of a 'Signed out' localized string within the **Chat status display**, ensuring consistent messaging. This work improves the maintainability and polish of the **Chat UI's sign-in and status indicators**.

This commit performs **refactoring** and implements **experiment gating** within the **Chat feature** to refine the display of sign-in related UI elements. It updates the `agentTitleBarStatusWidget.ts` and `chatStatusEntry.ts` to conditionally show sign-in actions and text based on the `SignInTitleBarEnabled` experiment flag. Additionally, `chatSetupContributions.ts` is refactored to introduce a constant for the sign-in title bar action ID and improve ARIA label assignment. This ensures that experimental sign-in UI components are only visible when the corresponding feature flag is enabled, improving the overall **user experience** and **code maintainability** for the chat interface.

This commit introduces an **experimental sign-in button** directly into the **Chat feature's title bar**, aiming to improve user discoverability and access to authentication. It adds a **new configuration setting** (`chat.signInTitleBar.enabled`) to control the button's visibility and registers a custom view item and action within `chatSetupContributions.ts` to render this new UI element. This **new capability** enhances the **Chat user experience** by providing a prominent sign-in entry point, while also refining related status messages for consistency.

This commit performs **maintenance** by **removing the sign-in dialog experiment** from the codebase. It specifically targets and cleans up experimental code within the **welcome experience** (`src/vs/sessions/contrib/welcome`) and the **chat setup contributions** (`src/vs/workbench/contrib/chat`) modules. This cleanup ensures that the experimental sign-in dialog is no longer present, streamlining the relevant parts of the application by eliminating unused or deprecated feature code. The change simplifies the codebase by removing a feature that is no longer being pursued.

This commit represents a **routine integration** of the `main` branch into `meerkat`, incorporating a broad range of **chore-level updates** across the project. The changes primarily affect the **AI and chat features**, including updates to the agent host services, chat sessions, and AI customization components within the `sessions` and `workbench` modules. This work involves adjustments to code structure, UI styling, documentation, and test files, reflecting continuous development in these areas. The merge ensures the `meerkat` branch is synchronized with the latest upstream changes, maintaining consistency and integrating ongoing improvements.

This commit **removes an experimental sign-in dialog** from the **Chat setup process** within the **Chat extension**. It **cleans up** the `chatSetupContributions.ts` and `chatSetupRunner.ts` modules by eliminating the `dialogHideSkip` option and all associated logic, including the `IWorkbenchAssignmentService` dependency. This **feature removal** streamlines the chat setup UI by fully deprecating and removing a temporary experimental control. Consequently, users will no longer encounter this specific dialog during chat setup, simplifying the initial user experience.

This commit provides a comprehensive **documentation update** for the **`copilot` extension**, specifically targeting its `README.md` file. It introduces new content to reflect recent features such as **autonomous agents** and adds dedicated sections on **customization options**, significantly enhancing the user guide. The update also involves revising existing descriptions, correcting video and image tags, and ensuring all internal and external links are current and functional. This **maintenance** work improves the clarity, accuracy, and completeness of the `copilot` extension's user documentation, aiding users in understanding its latest capabilities.

Merge pull request #297828 from microsoft/fluffy-boa

This commit introduces a **UI refinement** by **refactoring** how a specific message is displayed within the **Chat Usage Widget** and the **Chat Status Dashboard**. Specifically, it splits the "Additional premium requests approved" string into two lines. This change, affecting the `render` methods in `chatUsageWidget.ts` and `chatStatusDashboard.ts`, aims to **improve readability and visual presentation** for users interacting with these **chat management components**.

This commit **refactors** and **enhances the user interface** for displaying **premium request quotas** within the **Copilot status menu**. It specifically improves the visual representation of quota information in the `chatUsageWidget.ts` and `chatStatusDashboard.ts` components. The changes introduce more refined **conditional labels**, clearer **overage messages**, and sophisticated **warning/error state display logic** that dynamically adapts based on overage enablement and unlimited status. This work significantly improves the clarity and accuracy of how users perceive their remaining premium chat requests.

Merge pull request #297364 from microsoft/objective-herring

This commit enhances the settings UI by adding a new capability to organize settings across multiple trees. It's an isolated UI improvement, affecting only the presentation and discoverability of settings within the application.

This is an isolated refactoring within the chat module, specifically improving the internal code quality for handling the chat status widget in unauthenticated scenarios. It has no direct user impact or downstream effects.

This is an isolated change affecting the agent welcome experience, specifically updating the "no auth" widget. It enhances a specific UI component without broader system impact.

This commit introduces a **new feature** by updating the welcome message displayed in the **Agent Sessions Welcome widget**. It modifies the content within `src/vs/workbench/contrib/welcomeAgentSessions/browser/agentSessionsWelcome.ts` to promote a free, no sign-in required trial for GitHub Copilot. This change aims to enhance user engagement with the **Agent Sessions** feature by highlighting an accessible trial, potentially increasing adoption of Copilot among users.

This commit performs **test maintenance** by updating the **Chat Service** unit tests to properly account for entitlement logic. It introduces imports for `IChatEntitlementService` and `TestChatEntitlementService` within `chatService.test.ts`. The `IChatEntitlementService` is then stubbed in the test setup, ensuring that the `workbench/contrib/chat` module's core service tests can correctly mock or interact with entitlement checks. This enhancement improves the **robustness and completeness of the test suite**, preparing it for future developments involving chat entitlements without affecting user-facing functionality.

This commit **refactors** and **enhances** the **chat feature's** handling of **anonymous users** who encounter rate limits. It introduces a new `markAnonymousRateLimited` method within the `IChatEntitlementService` to specifically track when anonymous chat requests are rate-limited, which is now invoked by the `chatServiceImpl.ts`. Concurrently, the **chat status widget** (`chatStatusWidget.ts`) is updated to consume a new `chat.statusWidget.anonymous` configuration setting, allowing it to display a revised and more accurate message for anonymous rate-limited scenarios. This work improves the user experience and internal tracking for **anonymous chat interactions**.

This commit introduces **vision policy handling** for **image attachments** within the **Chat UI**, enabling dynamic control over this feature. It integrates the `IChatEntitlementService` to check the `previewFeaturesDisabled` status, which now dictates whether users can attach images via `ImageAttachmentWidget` and `NotebookCellOutputChatAttachmentWidget`. This **new capability** ensures that image attachment functionality is only available when permitted by the account's vision policy, potentially displaying a warning when disabled. Additionally, it improves test stability by making `IDefaultAccountService` optional in these widgets, treating missing policy data as "enabled" by default.

This change introduces a new user-configurable setting for scroll behavior within the Settings editor, providing a new customization option for the user interface.

This commit introduces a **new capability** to customize the scroll behavior within the **Settings editor**. A new configuration setting, `workbench.settings.scrollBehavior`, allows users to choose between 'paginated' and 'continuous' scrolling modes, significantly altering how settings categories are displayed and navigated. This required substantial modifications to the **Settings editor's rendering logic**, including adapting the `SettingsTreeFilter` to handle category-based filtering for the new modes and adjusting the `TOCTree` to disable group filtering. The enhancement provides a more flexible and potentially improved user experience for navigating the extensive list of settings.