Henning Dieterichs

This commit addresses **missing service errors** within the **chat artifacts component tests** by providing necessary mock implementations. Specifically, it **adds mock definitions** for `IContextViewService` and `IChatImageCarouselService` to the `src/vs/workbench/test/browser/componentFixtures/chatArtifacts.fixture.ts` test fixture. This **test maintenance** ensures that the chat component's tests can execute correctly without encountering runtime failures due to absent service dependencies, thereby improving the overall stability and reliability of the test suite.

This commit **fixes a caching issue** within the **chat artifacts service** by refining its cache invalidation conditions and storage mechanisms. Specifically, it modifies the cache keys in `src/vs/workbench/contrib/chat/common/tools/chatArtifactsService.ts` to incorporate `byMimeType` and `byFilePath`. This ensures more **precise caching** of chat-related data, preventing stale or incorrect artifacts from being served and improving the overall reliability of the **chat feature** within the workbench.

This commit introduces a **significant architectural enhancement** to the **Chat artifact management system**, enabling a new **rule-based approach** for identifying and extracting artifacts. It implements the `IChatArtifactsService` with a switching mechanism that allows artifact handling to be determined by new configuration settings for MIME type and file path rules, or by existing tools. This **new capability** refactors the `ChatArtifactsWidget` to display artifacts in a structured tree view and updates various components, including `SetArtifactsTool` and artifact migration, to integrate with the new `IChatArtifacts` interface. The change provides a more flexible and configurable artifact experience within the chat feature.

This commit **updates the descriptive text** for a specific **artifact management tool**, enhancing its clarity and accuracy for users. The change primarily impacts the **user interface or command-line interface** where the tool's description is displayed, ensuring that its purpose and usage are more easily understood. This is a **documentation update** that improves the overall user experience and maintainability of the project's tools by providing more precise information.

This commit introduces a **feature enhancement** to the **Chat Artifacts Widget** by changing its default display state. Specifically, the `_isCollapsed` property within `src/vs/workbench/contrib/chat/browser/widget/chatArtifactsWidget.ts` is now initialized to `false`, ensuring the widget is **uncollapsed by default**. This modification means that when users interact with the chat feature, the associated artifacts will be immediately visible, improving discoverability and streamlining the user experience by removing the need for a manual expansion.

This commit introduces a **new feature** to the **Chat** system, enhancing the experience when **opening chat artifacts**. It integrates the `getEditorOverrideForChatResource` function within `chatArtifactsWidget.ts` to provide specific editor overrides, ensuring a more tailored and appropriate display for these resources. This change allows for custom editor configurations when users interact with chat-related content. The `getEditorOverrideForChatResource` utility is also explicitly exported from `chatInlineAnchorWidget.ts`, making it available for broader use across the chat contribution.

This commit introduces a **new capability** to the **Chat feature**, enabling users to **save chat artifacts** directly from the workbench. It implements the core saving logic, including a new `_saveArtifact` method within `chatArtifactsWidget.ts`, and integrates the necessary UI elements and styling for a save button in the chat artifacts list. To ensure robustness, new test fixtures and mocks for the file dialog service are also added. This enhancement significantly improves the persistence and usability of chat-generated content by allowing users to easily export their chat outputs.

This commit **implements a clear button** within the **Chat Artifacts Widget** to address an issue related to managing chat history. It introduces a new private member and the `_clearAllArtifacts` method in `src/vs/workbench/contrib/chat/browser/widget/chatArtifactsWidget.ts` to provide the functionality for **clearing all displayed chat artifacts**. Corresponding CSS rules are added in `src/vs/workbench/contrib/chat/browser/widget/media/chat.css` to style the button and its container. This **feature enhancement** improves the user experience for the **Chat** feature by offering a direct way to manage artifacts.

This commit delivers a **bug fix** addressing layout inconsistencies within the **chat widget**. It **adjusts the layout logic** in `src/vs/workbench/contrib/chat/browser/widget/chatWidget.ts`, specifically impacting the `layout` function, to ensure the **chat input area is correctly positioned and sized**. This resolves visual glitches where the input might be misaligned or improperly scaled, particularly when the **chat widget** is resized. The change enhances the stability and usability of the **chat feature** by ensuring its UI elements render correctly under various conditions.

This commit implements a **maintenance** improvement to the project's **dependency management** and build process. It addresses an issue where the `node_modules` directory would frequently become stale, triggering unnecessary rebuilds. The change specifically configures the system to **ignore changes in the Node.js version** when determining the validity of the `node_modules` cache. This optimization prevents redundant dependency installations, leading to faster build times and a more efficient development workflow.

This **maintenance** commit **refactors** the `SetArtifactsTool` within the **chat contribution's built-in tools** to improve its usability and consistency. It introduces an alias for the tool, allowing it to be referenced as `artifacts` in addition to its original name, "Set Session Artifacts". This is achieved by adding `toolReferenceName` and `legacyToolReferenceFullNames` to the `SetArtifactsToolData` interface in `src/vs/workbench/contrib/chat/common/tools/builtinTools/setArtifactsTool.ts`. The change streamlines how users and the system can invoke this specific tool, making its name shorter and more consistent with other tool naming conventions.

This commit performs **maintenance** by updating the status of the `chat.artifacts.enabled` setting within the **Chat artifacts** feature. The setting's classification has been changed from `preview` to **experimental**, as reflected in `src/vs/workbench/contrib/chat/browser/chat.contribution.ts`. This update signifies a shift in the feature's maturity level, indicating it is still under active development and may undergo significant changes or be less stable than a `preview` feature. Users will now see this feature flagged with the `experimental` status in their settings.

This commit introduces a **new capability** by implementing the `ResolveMemoryFileUriTool` within the **Copilot extension's tool system**. This tool allows the agent to **convert internal memory paths into standard URIs**, enabling other tools to access and operate on memory-resident files. The `resolveMemoryFileUriTool.tsx` file defines the tool, which is then integrated into the `allTools.ts` and `toolNames.ts` modules. Consequently, agent prompt snapshots are updated to reflect the availability of this new `resolve_memory_file_uri` tool, enhancing the agent's overall interaction capabilities with its internal state.

This commit **fixes styling issues** within the **Chat Artifacts widget** specifically on **macOS**. It introduces a platform-specific `mac` class to the `chatArtifactsWidget` element when running on macOS, enabling targeted CSS adjustments. Consequently, the right padding of the artifact list container is now correctly adjusted in `chat.css` to account for the scrollbar width, preventing visual glitches. This **UI bug fix** ensures a consistent and correct layout for chat artifacts on Apple's operating system, with corresponding adjustments made to the chat input fixture for testing.

This commit introduces a **new capability** to the **task system** by enabling `taskVar` variables, allowing **problem matchers** to extract named capture groups from their `endsPattern`. These **captured variables** are now available for **variable resolution** in contexts like **launch configurations**, significantly enhancing the dynamic capabilities of task automation and debugging workflows. The `IProblemCollectorEvent` and `TerminalTaskSystem` are updated to handle and register these new variables, with a new `VariableKind.TaskVar` added to support this feature. This allows users to dynamically pass information from task output to other parts of their development environment.

This commit introduces a **new feature** to the **Copilot extension's prompt rendering system**, specifically within the `toolCalling.tsx` module. It **enhances image handling** by ensuring that when an image is rendered in a prompt, its **Uniform Resource Identifier (URI) is also included in the output**. This change allows the Language Model (LLM) to programmatically reference the image, for instance, by passing its URI as input to other tools like an "artifacts tool," significantly **improving the LLM's multimodal interaction capabilities**. The `onImage` function is updated, and a new utility `buildToolImageResourceUri` is added to facilitate this.

This commit implements a **bug fix** within the **Chat Tool Invocation** mechanism, specifically in the `languageModelToolsService`. The `ChatToolInvocation` constructor is updated to prioritize using `chatStreamToolCallId` when present, otherwise defaulting to `callId`. This ensures **consistent tool IDs** are used across the **core chat functionality** and its **extensions**. By aligning these identifiers, the change prevents potential mismatches and improves the reliability of how chat tools are invoked and tracked within the system.

This commit addresses a **CSS linting error** within the **Chat widget's styling** by making a **minor maintenance adjustment**. It **fixes** an issue in `src/vs/workbench/contrib/chat/browser/widget/media/chat.css` by replacing a CSS variable used for font size with a fixed `13px` value. This change resolves an internal code quality warning without altering the visual appearance or functionality of the **Chat feature**. The scope is limited to a small styling correction for linting compliance.

This commit **enhances the test infrastructure** by introducing new UI component fixtures within the `src/vs/workbench/test/browser/componentFixtures/` directory. Specifically, it adds a comprehensive fixture for the **chat input** with configurations for artifacts, file changes, and todos, alongside a new **image carousel** fixture supporting various image collection layouts. Additionally, a fixture for the **peek reference** feature is included to display code references. This work **expands the testing capabilities** for these critical workbench UI components, enabling more robust and varied test scenarios.

This commit introduces a **new capability** to display and manage **chat artifacts** directly within the chat interface. It implements a dedicated `ChatArtifactsWidget` for rendering a collapsible list of artifacts, supported by a new `ChatArtifactsService` responsible for storing, retrieving, and migrating artifacts across chat sessions. The feature integrates into the existing **Chat UI** through `chatWidget.ts` and `chatInputPart.ts`, and includes a `SetArtifactsTool` for programmatic artifact management. This work significantly enhances the **chat experience** by providing persistent context and information directly within the conversation, with the entire view being configurable via a new setting.