The Tk opt-in census surfaced that the full suite cannot run unattended in
the batch/suite-built shell: winDialog.test (72 cases) and winMsgbox.test (19)
pop real OS dialogs whose message-injection automation does not drive them
here, so each blocks waiting on a human. The first attempt hung there and the
engine correctly reported no-totals/fail.
Adds a dedicated file-exclusion mechanism: tools/test_gate.tcl gains -notfiles
(a Tcl list of test-file globs passed to the driver as one -notfile list
value - a flat -testargs cannot carry a multi-file list through the option
chain, since -notfile takes a single list arg), and build905.zig gains a
per-library -Dtestnotfiles-<lib> knob defaulting to each LibSuite's
default_notfiles. tk defaults to excluding winDialog.test + winMsgbox.test so
its census completes hands-off; -Dtestnotfiles-tk="" re-includes them for a
manual interactive run. The exclusion is recorded in the evidence summary
(notfiles key). Empty for every other library (no behaviour change).
Verified: tk census now completes unattended (9865 run / 8127 passed / 1711
skipped / 27 failed, result pass; log shows winDialog/winMsgbox in the driver
skip list); thread gate still PASS with notfiles {} recorded.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
