Stop-aware waits, per-thread context and UI Automation, config-sync housekeeping, weak GUI callbacks

.github/workflows/platform-smoke.yml

@@ -196,12 +196,11 @@ jobs:
       # holds what was measured, and a capability appearing or disappearing
       # turns this red and names which one.
       #
-      # Three probes are newer than that measurement and are only reported
-      # (REPORTED in the script; they print what they found and cannot fail
-      # this step): the click-state read-back, the by-id lookup of a minimised
-      # window, and the point-based `grab_logical`. The first two re-run tests
-      # the headless suite already has, where a skip is a pass; here it is
-      # printed as a skip. That is what pytest is installed for.
+      # Three of the probes (the click-state read-back, the by-id lookup of a
+      # minimised window, and the point-based `grab_logical`) were measured on
+      # this runner on 2026-10-09 and are asserted since. The first two re-run
+      # tests the headless suite already has, where a skip is a pass; here a
+      # skip is a failure. That is what pytest is installed for.
       - run: "python -m pip install --only-binary :all: pytest==9.1.1"
 
       - name: Verify the macOS backend against a real window server

.github/workflows/quality.yml

@@ -268,6 +268,11 @@ jobs:
   # on 3.14 (test_execution_scope_threads.py); this runs the same three files
   # on a real free-threaded interpreter with the GIL off.
   #
+  # The same rule covers the other per-thread state kept in context variables
+  # -- the caller a request is served as, the device bound by use_device, the
+  # heal-event stamp and a run's stop token (utils/thread_bound.py) -- whose
+  # tests are the fourth file, test_thread_bound_context.py.
+  #
   # The project is not pip-installed: opencv-python ships abi3 wheels only,
   # which a free-threaded interpreter cannot load, and nothing these tests
   # import needs it. The packages below are what importing the executor needs,
@@ -299,7 +304,7 @@ jobs:
         env:
           PYTHON_GIL: "0"
           PYTHONPATH: ${{ github.workspace }}
-        run: '"$FT_PYTHON" -X thread_inherit_context=1 -m pytest -q -p no:cacheprovider test/unit_test/headless/test_execution_scope_threads.py test/unit_test/headless/test_execution_scope_isolation.py test/unit_test/headless/test_scope_run_level_callers.py'
+        run: '"$FT_PYTHON" -X thread_inherit_context=1 -m pytest -q -p no:cacheprovider test/unit_test/headless/test_execution_scope_threads.py test/unit_test/headless/test_execution_scope_isolation.py test/unit_test/headless/test_scope_run_level_callers.py test/unit_test/headless/test_thread_bound_context.py'
 
   # Sphinx with warnings as errors. The headless suite reads every page with
   # the `dummy` builder when Sphinx is installed (test_sphinx_docs_build.py),

CHANGELOG.md

@@ -238,6 +238,34 @@ it shipped into a `## [x.y.z] - date` section of their own; the tag's
 
 ### Changed
 
+- Stop: inside a stoppable run the polling waits (`AC_wait_window`,
+  `AC_wait_text`, the smart waits, `AC_expect_poll`, `AC_assert_eventually`,
+  `AC_wait_actionable` and others) end with `ExecutionStopped` as soon as a
+  stop is requested instead of running to their timeout. `expect_poll`,
+  `wait_until_app_idle`, `wait_for_unlock`, `build_verifier`,
+  `run_with_budget` and `TokenBucket.acquire` default their `sleep` to
+  `run_control.pause`.
+- ChatOps: a stopped command replies "`<name>` stopped." rather than a failure
+  naming `ExecutionStopped`.
+- USB ACL: while the file fails its integrity check `UsbAcl.decide()` denies
+  every device and `default_policy` reads `"deny"`, also for an instance built
+  with `default_policy="allow"`.
+- Config sync: an acknowledged deletion is kept for 30 days
+  (`tombstone_hold_s=0` restores immediate collection). `HttpAssetTransport`
+  asks the server's blob limit once and refuses a larger file without sending
+  it. Blob listings carry `age_s`.
+- Folder mirror: a file whose size changes at an unchanged modification time,
+  or whose modification time goes backwards, is now pushed.
+- GUI: releasing the Remote Desktop tab (`close_tab(..., release=True)`) ends
+  a running WebRTC host or viewer session; TCP and WebSocket sessions keep
+  running. Releasing any tab stops its background work at once. Callbacks
+  given to `start_worker`, `connect_viewer` and `start_panel_task` are held
+  weakly.
+- Accessibility (Windows): each calling thread gets its own UI Automation
+  object, with COM initialised on that thread at its first call.
+- Threads: a thread started inside `authorization_scope`, `use_device`,
+  `heal_context` or a stoppable run no longer sees that state on builds where
+  threads inherit context (free-threaded Python, `-X thread_inherit_context=1`).
 - Config sync: `ConfigBucket.upsert` / `remove` without `origin=` now store a
   versioned entry (`{"value", "vector", "origin", ...}`) instead of the flat
   value. Read values with `bucket.values(section)`, or pass `versioned=False`