usb_query.py 267 -> 180. The non-blocking fd handling - _drain_buffer,
_write_with_deadline, _read_nonblocking, _wait_for_pjl_response and
pjl_query - moves to _pjl_io.py.
usb_query imports the three names test_usb_query.py patches back, which
is safe here only because all three still have real call sites in the
code that stayed; an import-only name would be stripped by ruff's F401
sweep and break the patch. os and time also stay: they are patched on
usb_query as well as on _pjl_io.
test_usb_query.py needs no edit. Pass count is 402 before and after.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
cups_service.py 406 -> 234. The IPP attribute queries, the CUPS
status-code mapping, find_cups_printer_name and query_usb_via_cups move
to _cups_fallback.py; cups_service keeps service control and raw USB
port status.
The seam is not the section header: test_cups_service_part2.py imports
_get_cups_economode and find_cups_printer_name together and patches
shutil once, so those two had to travel as a pair. test_cups_service.py,
the largest module, needs no edit.
usb_query.py reaches the fallback through a late import_module, so both
that string and the absolute patch target in test_usb_query.py moved
with it. Pass count is 402 before and after.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
./run.sh failed outright with ModuleNotFoundError, and once running it
reported a sleeping printer as a critical paper jam. Both are fixed, plus
the defects found while verifying them against the real HL-1110.
Entry point: run.sh ran the script by path, so the absolute
python_pkg.* imports could not resolve. Resolve the repo root and pass
PYTHONPATH as a sudo argument, since sudo's env_reset strips an exported
one. __main__.py had the wrong import prefix and ran main() on import.
Status codes: the table claimed provenance from a "Brother PJL Technical
Reference" that does not appear to exist, and 23 of its 25 entries were
wrong. Rebuilt from the HP PJL Technical Reference Manual, Appendix D,
and verified against six states induced on real hardware (10001 READY,
10003 WARMING UP, 10023 PRINTING, 40000 SLEEP, 40021 TOP COVER OPEN,
41213 NO PAPER) - all six matched the reference, none matched the table.
40000 is SLEEP MODE, which the reference explicitly flags "not an error";
the real jam code 40022 was absent entirely. The inverse also bit: 10006
is TONER LOW, previously shown as a benign "Processing". Codes in no
reference are dropped and now report "Unknown status - check printer
display" rather than a confident wrong answer, and states we infer
ourselves no longer borrow PJL numbers to describe themselves.
Page counts: estimates came from the CUPS page log, which only sees jobs
CUPS logged and counts pages the printer never printed (it logged
total=50 for a job that printed 3). Take them from @PJL INFO PAGECOUNT
instead, migrating stored baselines onto the printer's scale once so the
reported percentages do not jump.
Reading status must not cost anything: a blocking open() hung forever
whenever the printer was unwell - precisely when a status report is
wanted - and the port-status probe stopped CUPS and reset the USB device,
destroying the in-flight job and then misreporting the damage as a
printer error. The fd is now non-blocking with deadline-bounded writes,
and the probe reads the same byte via the free usblp ioctl, skips
entirely while a job prints, and re-attaches the kernel driver.
Dropped pages: the HL-1110 silently discards pages whose 600dpi raster
exceeds its ~1MB memory, stays READY, and CUPS still calls the job
successful - so nothing anywhere reports the failure. Compare CUPS's
claim against the printer's counter between jobs and name the workaround
(lp -o Resolution=300dpi).
402 tests, 100% branch coverage.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RG3eEn8rwZbcXaJrKJxdv8
Split diet_guard/_gatelock.py, wake_alarm/_alarm.py, and the
usage_report.py/_usage_report_parsing.py pair into focused
sub-modules so every Python file is <= 500 lines, satisfying
test_file_length.py. Install python-kasa into .venv (declared in
requirements but missing after the 3.13->3.14 venv upgrade),
fixing 8 failing smart_plug tests and restoring 100% coverage.
Also includes prior in-progress work from the working tree: the
wake_alarm Progress/View/Hardware field-grouping refactor,
brother_printer query module + tests, diet_guard foodbank/state/cli
updates, new shared coerce/logging_setup helpers, morning_routine
orchestrator tweaks, dwm window-manager config, gaming scripts, and
misc maintenance/digital-wellbeing script updates.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
