Dustin L. Howett

This commit performs a **significant refactoring** of the **`TerminalControl` input handling subsystem**, moving `PointerId`, focus state, and in-bounds tracking logic from `TermControl` into the `ControlInteractivity` layer. This **architectural improvement** better separates concerns and prepares the groundwork for future integration of automatic scrolling into `WpfTerminalControl`. The change also involves simplifying method signatures and converting point types from `Foundation::Point` to `Core::Point` within `ControlInteractivity.cpp`, `ControlInteractivity.h`, and `ControlInteractivity.idl`. While there is **no immediate functional change** for users, this is a crucial **maintenance task** that enhances modularity and sets the stage for future feature development, with updated unit tests ensuring correctness.

This commit **refactors** the **ConPTY subsystem** by correcting a type definition within its display management functions. Specifically, the `show` parameter in the `ConptyShowHidePseudoConsole` function, defined in `src/inc/conpty-static.h` and implemented in `src/winconpty/winconpty.cpp`, was changed from `bool` to the Windows-specific `BOOL` type. This ensures proper adherence to Windows API conventions and correct handling of boolean values when showing or hiding the pseudo-console. The change prevents potential type conversion issues and improves the robustness of the **pseudo-console display logic**.

This commit **reinstates** the sending of an empty bracketed paste sequence within the **TerminalApp's bracketed paste logic**, specifically in `src/cascadia/TerminalApp/TerminalPage.cpp`. This **compatibility fix** addresses an issue where certain **agentic CLI tools** and applications, such as **gnome-terminal** and **VS Code**, rely on this specific signal to determine if the clipboard was requested but contained no serializable data. By restoring this behavior, the commit ensures **improved interoperability** and prevents unexpected behavior in these downstream applications that depend on this "load-bearing" empty packet.

This commit **fixes build failures** in `CHK` builds by preventing the **Atlas renderer** from attempting hot shader reloads when `__INSIDE_WINDOWS` is defined. Previously, debug features like hot shader reloading, which rely on source code access, would cause failures in these specific build configurations. The change adjusts the `ATLAS_DEBUG__IS_DEBUG` macro definition within `src/renderer/atlas/Backend.h` to disable this behavior. This **maintenance fix** ensures successful compilation and execution of `CHK` builds in environments where shader source code is not readily available.

This commit introduces a **performance optimization** to the **console host initialization** process. It modifies the `SrvInit` function within `src/host/srvinit.cpp` to conditionally enable the renderer and create the input thread. This ensures that these resource-intensive operations only occur when a visible console window is required, thereby **reducing unnecessary initialization costs** and **improving startup efficiency** for headless console applications.

This commit **optimizes the rendering initialization process** within the **rendering subsystem** to prevent unnecessary buffer commits, directly addressing observed low-memory crashes. It **refactors** the `src/renderer/base/renderer.cpp` module, specifically the `_scheduleRenditionBlink` and `_updateCursorInfo` functions, to avoid checking for blink attributes, cursor double-width status, or DBCS on uncommitted rows. This **performance optimization** and **stability fix** delays the first buffer commit until the renderer is fully set up, significantly improving **resource efficiency** and preventing crashes, especially for headless console applications.

This commit focuses on **onboarding `conhost` Release Infrastructure Test Passes** to support a wider array of internal Windows editions. It introduces **test compatibility improvements** by configuring `icu.dll` for delay-loading in relevant tests, allowing them to gracefully skip if ICU is unavailable, and adds a **`NoAppPlatform` test group** to bypass `PolicyTests` on editions lacking an app platform. Furthermore, it includes a critical **bug fix** for the **`ConPTY` tests**, re-en-verging them with the OSS implementation by updating `createPipes` and `AttachPseudoConsole` logic. These changes collectively ensure **test compatibility and reliability** for `conhost` across diverse internal Windows environments.

This commit **suppresses unhelpful "invalid media resource" warnings** that were generating excessive noise, particularly in **stable builds**. It introduces a new feature flag, `Feature_WarnOnInvalidSettingsMediaResources`, which controls the conditional suppression within the `_validateMediaResources` function in the **Terminal Settings Model**. This **maintenance fix** improves the user experience by reducing log clutter and provides a cleaner console output for users. The change ensures that these specific, uninformative errors are silently ignored in stable environments.

This commit implements a **bug fix** in the **`conhost`** component, specifically for the **OneCore platform**, to prevent hangs during console window focus events. It modifies the `ConIoSrv`'s `HandleFocusEvent` in `src/interactivity/onecore/ConIoSrvComm.cpp` to **unlock the console** before triggering renderer teardown and re-lock it afterward. This ensures that the final rendering frame can drain out, resolving a hang that previously occurred when rapidly tabbing between console windows with high rendering loads. The change significantly improves the **stability and responsiveness** of the console experience on OneCore by addressing a critical contention point during resource relinquishment.

This commit **fixes** an issue in **console input handling** by ensuring that `Ctrl+Z` is only honored as an End-of-File marker during `ReadFile` operations when the console is in `PROCESSED` input mode. The core logic within the `ReadConsole` API dispatcher (`src/server/ApiDispatchers.cpp`) was updated to implement this conditional behavior, **restoring the Windows 7 behavior** for `ReadFile`. This prevents `Ctrl+Z` from prematurely terminating input in scenarios where raw or unprocessed console modes are active, ensuring more predictable and consistent input stream management. A corresponding test in `src/host/ft_host/API_FileTests.cpp` was also modified to explicitly enable processed input for `Ctrl+Z` handling.

This commit **updates the project documentation** by **removing an outdated roadmap link** from the main `README` file. This **maintenance** task ensures that new users or contributors are not directed to obsolete planning information, improving the accuracy of the project's introductory documentation. While the direct link is removed, historical roadmaps remain accessible within the `doc` directory, maintaining a record of past plans.

vpack: actually, we have to use a 3-segment version number (#19939)

build: make sure the AnyCPU build sets BuildPlatform properly (#19925)

This commit performs **maintenance** on the **Azure DevOps CI/CD pipeline** for the `loc` component by updating its build environment. Specifically, it modifies the `.pipelines/loc/loc.yml` configuration to use the `windows-latest` virtual machine image instead of the deprecated `windows-2019` image. This **chore** ensures the pipeline continues to function correctly and prevents build failures caused by unsupported infrastructure, maintaining the continuous integration process for `loc`.

pdp: cycle the preview release notes to stable (#19916)

version: bump to 1.26 on main (#19915)

This commit **fixes a longstanding visual bug** in the **Atlas renderer** where **underlines and gridlines** failed to display the correct highlight colors for selections or search results. It introduces a **new, dedicated bitmap layer** for underline colors, enabling them to be rendered accurately with the appropriate foreground highlight. This required significant **refactoring** of the rendering pipeline, particularly in `_fillColorBitmap` and the D2D/D3D backend functions like `_drawGridlineRow`, to process lines by color span. While resolving the primary issue of inconsistent highlighting, this change introduces a known limitation where gridline colors can no longer change mid-cell within Atlas.

This commit introduces a **reliability improvement** to the **ConPTY subsystem** by ensuring the `ConDrv` driver is properly loaded before pseudo-console operations. A new internal function, `_EnsureDriverIsLoaded`, is added to `src/winconpty/winconpty.cpp` to explicitly check for and load the driver. This function is then integrated into `_CreatePseudoConsole`, which now attempts to call `_EnsureDriverIsLoaded` if the initial server handle creation fails. This change **fixes a potential bug** where `ConPTY` initialization could fail if the `ConDrv` driver was not active, making pseudo-console creation more robust and stable for downstream applications.

This commit **integrates upstream changes** from **OS PR 14647503**, synchronizing the project with updates made in a core operating system component. This **maintenance** task ensures continued compatibility and incorporates external fixes or enhancements from the referenced pull request. The changes primarily affect **platform-specific interactions** and underlying system dependencies, ensuring the application remains stable and up-to-date with its environment.

This commit **enables the AtlasEngine renderer** for **`conhost`** in Windows Inbox builds, marking a significant **feature enablement** for the console host. It **refactors** the feature flag system by renaming `Feature_ConhostAtlasEngine` to `Feature_ConhostAtlasEngineCustomShaders`, which now controls the conditional compilation of custom shader logic in `src/renderer/atlas/BackendD3D.cpp`. This change prevents `conhost` from using custom shaders, thereby avoiding a dependency on `d3dcompiler_47.dll`. The **build system** is updated to properly link `ConRenderAtlas.lib` into `conhost` and its associated test projects, fully integrating the new rendering backend.