New src/tests/testsupport/consoleinject.ps1: the G-106 recipe's injection
half as a committed helper - FreeConsole/AttachConsole to a target pid's
console, open CONIN$, type lines as WriteConsoleInput key events.
tclshcmd.test: constraint punkconsole (windows + PUNK_TEST_CONSOLE=1; normal
runs skip) gates two tests driving the reopen path end-to-end in the child's
OWN hidden console (outer Start-Process -WindowStyle Hidden wrapper owns a
fresh console; wrapper runs '<kit> tclsh' there with std handles redirected
to files; piped code sets dorepl; injected lines + exit 0 finish it).
Pinned: reopened flips 0 -> 1 at reopen with istty immutable at 0,
inputbuffer published empty, reopen notice silent by default and STDERR-only
under TCLSH_PIPEREPL_DEBUG=1, injected exit completes with code 0 - closing
the item-1/7 console-side residue. Deadlines + wrapper-tree kill keep the
tests hang-proof; the piped-harness HANG RULE stands for everything else.
Verified: PUNK_TEST_CONSOLE=1 run 21/21 against punk9_beta; normal run
19 pass + 2 console skips; shell/*** suite 64 pass / 4 skips / 0 fail.
AGENTS updates: src/tests/shell (tclshcmd bullet - coverage now exists,
refined hang rule), src/tests (testsupport index + .ps1 helpers wording).
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
Julian Noble