* fix(server): publish candidate pages as immutable snapshots
Global::candidate_ui is a plain global with no lock. The IPC worker rebuilds and destroys its vectors while the UI thread paints from them, and the handoff is an asynchronous PostMessage, so the worker returns to its loop and pops the next task without waiting. A second keystroke, or an async english.db candidate arrival, could free the page_views buffer and its strings while FillItemsFromUi held a reference into it. ShowItemContextMenu reads the same vectors from a mouse callback with no message handoff at all.
The worker now copies each finished page into an immutable snapshot and publishes it at the single point where the rebuild completes; every UI-thread reader loads that snapshot once and reads only its own copy. PostMessage is deliberately left alone: the worker also serves UI-originated tasks, so a synchronous handoff would invite a cross-thread deadlock.
* fix(server): bound the aux and diagnostic pipe reads
Both listeners serve a single pipe instance inline and polled a NOWAIT handle for as long as the process ran, breaking only on a read that succeeded or failed with something other than ERROR_NO_DATA. A client that connected and never wrote held the only instance forever, so the loop never returned to ConnectNamedPipe and no later client was accepted, permanently losing the langbar right-click channel and the terminal-deactivation teardown fallback.
Give both loops the same deadline the hello reads already use and go back to accepting when it expires.
* fix(server): snapshot the voice config and replace config.toml atomically
GetConfiguredVoiceInput handed out a reference to a global that LoadImeConfig rewrites from the IPC worker thread, clearing and refilling two std::map members and around twenty strings. The voice control thread and the low-level keyboard hook, which copies the struct on every keystroke, walked those nodes as they were freed. LoadImeConfig now parses into a local and publishes it in one step under a process-local shared_mutex, and the getter returns a snapshot by value. The file lock is deliberately not reused for readers: it is a named cross-process mutex with a five second wait, and taking it in a keyboard hook would stall typing system-wide.
WriteConfiguredValue also reopened the live config.toml with ios::trunc, so a crash mid-write destroyed the user settings and could leave the file unparseable for good. It now goes through WriteFileTextAtomically, which this file already uses elsewhere. That makes the directory entry swap atomic; it does not flush, so it is not a durability guarantee.
* fix(ipc): restrict the server pipes to the owning account
The pipe DACL granted Everyone FILE_ALL_ACCESS. That bit set includes FILE_CREATE_PIPE_INSTANCE, so any local account could add an instance to a name this server already owned and answer part of the connections in its place. The names are machine-global with no per-user component, and the TSF client opened them with no SQOS, so a squatter could also impersonate the connecting thread.
Build the descriptor from the process owner SID and admit only LocalSystem, that account, and app containers with connect-only rights so UWP text input still works; fail pipe creation outright when the SID cannot be resolved rather than falling back to something permissive. Pass FILE_FLAG_FIRST_PIPE_INSTANCE on the first instance of each name so a squatted name fails loudly, and request SECURITY_IDENTIFICATION on the client side.
Authenticating the peer process after connect is a larger change to the handshake and is not attempted here.
* fix(tsf): guard the null focus paths and unadvise the compartment sink
_CandidateChangeNotification treated ITfThreadMgr::GetFocus and ITfDocumentMgr::GetTop as if they could only fail through a FAILED HRESULT. Both return S_OK with a null out-pointer when nothing has focus or the document stack is empty, and the results were dereferenced unconditionally, so an external UILess host calling Finalize while focus moved away crashed the host application. The sibling _RequestCancelComposition in the same class already checks both.
CLangBarItemButton::CleanUp only unregistered the compartment inside the SUCCEEDED branch of a CoCreateInstance, then deleted the sink regardless. This TIP registers COM-less activation support, where that call does fail, and the sink was freed while TSF still held it advised. Unadvising never needed the thread manager, so it now runs unconditionally before the deletes.
* fix(ui): drop the cached visuals when the scene is replaced
Window caches focused, hovered and captured Visual pointers into the scene tree, and SetScene destroyed that tree without clearing them. Toggling the input mode rebuilds the floating toolbar scene, so the next mouse move dispatched a virtual call through a freed object.
Clear all three before the assignment, and release the capture only when this window actually holds it: an adopted HWND may never have called SetCapture, and capturedVisual_ is set even when it did not.
* fix(settings): scope external skin CSS through the CSS parser
injectScopedSkinCss concatenated a skin toolbar.css into an @scope block as text. Block nesting is textual, so a leading close brace in the skin ended the block early and the rest styled the whole settings window. The host validates only the skin file name, never the body, and candidatePreviewCss interpolated unvalidated colour strings into rule bodies the same way.
Create the scope rule empty and re-insert every rule parsed out of the skin as a child of it, so nothing lands outside however the braces are balanced, and accept a colour only in the plain notations we actually render.
* fix(release): gate the dictionary source commit on its default branch
verify_published iterated only data["repositories"], but the dictionary block pins a source_commit exactly like they do. The manifest check merely proves the release agrees with the lock about that commit, which a branch commit satisfies just as happily, so a dictionary built from an unmerged branch shipped with the provenance the gate exists to refuse.
Run the dictionary through the same loop under its own name, resolving its repository from the lock. A retired dictionary repository that no longer answers is reported rather than failing the release: its published artifacts are immutable history, and being unable to re-check them is not the same as finding them unmerged.
A push to main carrying a fix or a feat now ends with a published installer, with no human merging the release pull request and no manual workflow_dispatch in between.
release-please only cuts a release for a release pull request that was already merged when it ran, so the prepare job now invokes it twice: once to refresh the pull request against the commits this push brought, and once after land-release-pr.sh has merged it, to turn that merge into the draft the rest of the run builds and publishes. Merging before the first invocation would instead release everything except the push that triggered the run.
land-release-pr.sh is check-release-pr.sh plus the merge it deliberately used to skip. It merges with GITHUB_TOKEN, whose pushes do not start workflow runs, so the merge cannot produce a second Release run queued behind this one on the concurrency group; the release is created and built inside the run that merged it. It merges the exact commit CI proved via --match-head-commit, then waits for that merge commit to be reachable from main so the second release-please invocation does not quietly find nothing to release.
resolve-auto-release.sh picks which of the two invocations reported the release to build, preferring the second when both did, and applies the invariants validate-draft-release.sh gives the manual path: the release is tagged at a full commit SHA, and the tag agrees with the version.
workflow_dispatch stays as a repair path for a run that failed after creating its draft.
This spends one of the signing certificate's limited signatures on every releasable merge, which is what the previous manual design existed to avoid. docs/product-release.md records the trade, including why the queueing this can produce is not answered by cancel-in-progress.
The dictionary release was republished as dict-v1.0.0 so that dictionary tags stop using calendar versions. The release was renamed rather than rebuilt, so the assets are byte-identical and every SHA256 in product-lock.json is unchanged; only the tag string moves. Downloads under the old tag now return 404, so this pin has to follow.
The runbook example and the fixture standing in for a current release move to the semver form too. LEGACY_DICTIONARY_TAG and the retired-repository fixture keep their calendar names because they identify historical releases that stay immutable.
MSIME-HelpCode is no longer a product input and the dictionary now ships from MSIME-Engine, so the readme, the agent notes, the release documentation and the issue templates stop naming a repository the product does not consume.
The product README was under windows/ after the move, but it was never a component readme: it is the download page, the feature guide and the contribution guide for the whole product, so it goes back to the root and windows/ gets a real component readme.
AGENTS.md at the root now carries the repository map, the component boundaries that used to be cross-repository rules, and the release process, since the scripts that process drives live at the root. The component files keep what is genuinely theirs and say which paths they are relative to. References that named sibling repositories now name sibling directories, and the lock documentation records that Server, the pages, the GUI framework and the installer are no longer inputs to pin.
The lock pins immutable commits, but nothing checked that anybody merged them. Today it pins server 40d85a4 and engine 9a4b0c6, both of which exist only on architecture/product-contracts branches, and a release built from this commit would have shipped and attested to a Server that never reached main. The release job's existing provenance check covers only the TSF commit being released, not the inputs the lock names.
verify-published compares each locked commit against its own repository's default branch and accepts only behind or identical, the two states that mean it is an ancestor. ahead and diverged both mean the commit sits on something nobody merged.
It runs in the release path and deliberately not in product-ci.yml. A pull request legitimately locks branch commits while one change lands across several repositories at once, which is exactly the situation this branch is in; enforcing reachability in pull request CI would deadlock the landing it exists to protect. At release time the judgement inverts, because an input that never reached its default branch is an input nobody reviewed.
fanlusky