[codex] Add Windows TSF IME insertion support

[millionart]

User description

Summary

Adds Windows TSF IME insertion support so OpenLess can commit dictated text through the active Windows text service instead of relying only on non-TSF fallback paths.

This PR also hardens the Windows packaging and registration flow:

• builds and registers both x64 and Win32 OpenLess IME DLLs
• registers COM/TSF using the correct 64-bit and 32-bit registry views
• uses side-by-side registration staging paths so running host apps cannot lock the next build output
• packages both IME DLLs into the Windows MSI
• restores the previous IME profile after prepared insertion sessions

Fixes Included

• Battle.net: supports 32-bit host processes by building and registering the Win32 IME DLL.
• Microsoft Word: retries TF_E_SYNCHRONOUS rejections with an async TSF edit session.
• Microsoft Word: moves the caret to the end of inserted text after commit by collapsing the committed range and setting selection.

Validation

• node scripts/windows-package-msvc.test.mjs
• x64 OpenLessIme.dll Release build: 0 warnings, 0 errors
• Win32 OpenLessIme.dll Release build: 0 warnings, 0 errors
• Local Battle.net manual test: text commits successfully
• Local Microsoft Word manual test: text commits successfully and caret lands after inserted text

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PR Type

Enhancement, Bug fix, Tests

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Description

• Add session-aware Windows TSF insertion flow

• Restore IME profile after canceled sessions

• Gate non-TSF fallback behind preference

• Expose IME status, packaging, and tests

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Diagram Walkthrough

flowchart LR
  A["Settings preference"] -- "toggle fallback" --> B["Coordinator session flow"]
  B -- "prepare / submit / restore" --> C["Windows IME session controller"]
  C -- "capture profile" --> D["TSF profile manager"]
  C -- "send text" --> E["IME IPC protocol"]
  E -- "pipe submit" --> F["OpenLess IME DLL"]
  C -- "status" --> G["Settings UI"]

Loading

File Walkthrough

	Relevant files
Enhancement	25 files coordinator.rs Make session lifecycle IME-aware                                                  +391/-47 windows_ime_profile.rs Manage TSF profile capture and restore                                      +660/-0  windows_ime_ipc.rs Add named-pipe IME submission transport                                    +414/-0  windows_ime_session.rs Coordinate TSF preparation, submit, restore                            +224/-0  windows_ime_protocol.rs Define IME pipe messages and names                                              +173/-0  lib.rs Expose IME command and modules                                                      +28/-9    types.rs Add Windows IME status and fallback pref                                  +42/-2    insertion.rs Add Windows Unicode keystroke fallback                                      +66/-6    commands.rs Expose Windows IME status command                                                +6/-1      Settings.tsx Add Windows IME controls to settings                                          +48/-0    zh-CN.ts Translate Windows IME settings strings                                      +12/-0    en.ts Add English Windows IME copy                                                          +12/-0    ipc.ts Mock Windows IME status in client                                                +13/-0    types.ts Add Windows IME status interfaces                                                +15/-0    ipc_client.cpp Implement IME client pipe communication                                    +511/-0  registry.cpp Handle IME registry keys and paths                                              +307/-0  text_service.cpp Implement TSF text service behavior                                            +332/-0  edit_session.cpp Manage IME edit sessions and commits                                          +125/-0  class_factory.cpp Expose IME COM class factory                                                          +75/-0    text_service.h Declare TSF text service interface                                              +54/-0    dllmain.cpp Initialize IME DLL entry points                                                    +54/-0    edit_session.h Declare IME edit session helpers                                                  +43/-0    ipc_client.h Declare IME IPC client interface                                                  +37/-0    class_factory.h Declare IME class factory types                                                    +20/-0    registry.h Declare IME registry helper functions                                        +6/-0
Formatting	2 files hotkey.rs Reformat hotkey handlers and flag updates                                +20/-11  selection.rs Reflow Windows paste input imports                                              +4/-3
Tests	3 files windows-real-asr-insertion-smoke.ps1 Support Win32 edit host smoke tests                                            +76/-7    windows-smoke-suite.ps1 Extend smoke suite with Win32 edit                                              +2/-2      windows-package-msvc.test.mjs Test Windows packaging and registration                                    +107/-0
Configuration changes	13 files windows-package-msvc.ps1 Package Windows IME artifacts and MSI                                        +316/-0  windows-ime-build.ps1 Build Windows IME DLL artifacts                                                    +82/-0    windows-ime-register.ps1 Register Windows IME COM and TSF                                                  +78/-0    windows-ime-unregister.ps1 Remove Windows IME registration entries                                    +65/-0    OpenLessIme.vcxproj Configure IME DLL project settings                                              +159/-0  openless-ime.wxs Bundle IME DLLs into MSI                                                                  +54/-0    OpenLessIme.sln Add Windows IME solution entry                                                      +27/-0    resource.rc Add IME version and resources                                                        +33/-0    guids.h Define COM and TSF GUIDs                                                                  +21/-0    windows-package-msvc.cmd Wrap Windows package build script                                                +8/-0      windows-preflight.ps1 Add Windows packaging preflight checks                                      +63/-1    tauri.conf.json Update Tauri bundling and commands                                              +11/-0    OpenLessIme.def Export IME DLL COM symbols                                                              +6/-0
Documentation	2 files 2026-05-01-windows-temporary-tsf-ime.md Document temporary TSF IME rollout plan                                    +2191/-0 2026-05-01-windows-temporary-tsf-ime-design.md Document TSF IME design details                                                    +143/-0
Dependencies	1 files Cargo.toml Add Windows IME crate dependencies                                              +7/-2

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[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 4 🔵🔵🔵🔵⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Broken profile restore Saving profile.clsid and profile.guidProfile with Debug formatting makes the captured text-service snapshot non-round-trippable. restore_profile() later parses those fields as GUID strings, so restoring the original IME profile after a TSF session will fail for any text-service profile, and the active-profile check can also stop recognizing OpenLess as active. if profile.dwProfileType == TF_PROFILETYPE_INPUTPROCESSOR { Ok(ImeProfileSnapshot::text_service( profile.langid, format!("{:?}", profile.clsid), format!("{:?}", profile.guidProfile), )) } else { keyboard_layout_snapshot_from_tsf(profile.langid, profile.hkl) }