NamedTemporaryFile has no write()

f = tempfile.NamedTemporaryFile("w+")
f.write("x")        # v451: TPyFile-less object, no method write

Fix (lib/rtl/tempfile.pas)

• The constructor still creates the file empty. It then opens it with pyfile_open(name, mode), the file object open() yields, so a read answers str or bytes by mode as open() does.
• The methods forward to that object. close() closes it, frees it (NilPy does not run this object's destructor) and then applies delete=True once.
• The constructor is (mode='w+b', buffering=-1, encoding='', newline='', suffix, prefix, dir, delete), in CPython's order. buffering, encoding and newline are accepted and ignored. Every existing caller in test/, examples/ and docs/ passes keywords.

Not done

• The at-exit removal of an unclosed delete=True file. pylib has no atexit hook; see the LOGBOOK entry of 2026-09-29.
• A binary-mode write of a str is accepted, where CPython raises TypeError.
• wasm32: no tempfile fixture runs there (Runtime error 2 at the first file creation, a WASI filesystem-access question).

Rows

test/test_nilpy_named_temporary_file_writes_and_reads.npy, with .expected from CPython. It covers binary and text modes, a positional mode, flush seen through a second open(), seek with whence, with and delete=False. Rows: x64 (tfrw26), i386 and riscv32, all red before the fix. The existing tempfile rows (deletes_on_close, gettempdir, mkdtemp, html_tempfile) all pass. Census: 2000 create/write/read/close cycles leave 15 live.