MintPRINT 1.2.6

1.2.6 Fixed monochrome jobs printing in colour, driver revision 41.3.

   - COLOR= (the Printer Engine colour mode) was only ever forwarded
     to the printer as the IPP print-color-mode job attribute - a
     request the printer's firmware can honour or ignore. The actual
     raster/JPEG pixel data sent alongside it stayed full colour
     regardless, across all five engines (JPEG, PostScript, PWG
     Raster, PDF, URF), since none of them had any grayscale handling
     at all. On hardware that doesn't strictly honour the hint, a
     "monochrome" job printed in colour - confirmed on real hardware.
   - driver/driver_core.c's mp_job_write_row() now desaturates the
     row itself (integer ITU-R BT.601 luma, no floating point)
     whenever COLOR= is monochrome, auto-monochrome, bi-level,
     process-bi-level or process-monochrome - the PWG5100.3/RFC 8011
     keywords that mean "black ink only" - before it reaches any
     encoder, so the output is black and white regardless of whether
     the printer itself respects the IPP hint.

1.2.5 Maintenance release: safer defaults, no more indefinite driver
hangs, correct AmigaOS 3.9 detection, driver revision 41.2.

   - driver/ipp_client.c's connect()/recv()/send() were plain blocking
     calls with no timeout - a printer that accepted a connection or a
     job and then went silent (e.g. a Samsung C480W hanging on a valid
     image/urf job, GitHub issue #66) could hold the driver, and the
     application printing through it, forever. All three are now
     timeout-bounded (8s connect, 20s read/write), with a distinct
     result code and debug log line for a timeout specifically
   - Fresh installs no longer default to a hardcoded LAN address
     (192.168.0.51:80) in either MintPrint Settings or the driver's
     own config - both now default to empty and do nothing until a
     real address is set, instead of a startup Query or even a print
     job silently probing some other device on the network
   - Driver/GUI generation detection now reads workbench.library's
     version instead of exec.library's - AmigaOS 3.9 and similar
     software-only OS updates can leave exec.library at whatever the
     Kickstart ROM shipped with, which was misdetecting real 3.9
     systems as needing the classic pre-V44 driver build
   - Installing/updating DEVS:Printers/MintPRINT is now atomic: copies
     to a temp file, verifies the full size landed, then swaps it in -
     an allocation failure, short write, or full disk partway through
     used to be able to destroy a previously-working driver with no
     way back
   - Fixed the Help menu ("MintPrint Settings Help...") silently doing
     nothing - it built its Multiview command line with the literal
     PROGDIR:MintPrintSettings.guide, but PROGDIR: is scoped to the
     process that has it, not inherited by the new process spawned to
     run Multiview
   - Query now shows a live printer status (Ready, Busy, Stopped, or a
     specific problem - Jam, Door Open, Toner Empty, Out of Paper,
     Supply Low) next to the ink/toner levels, from printer-state and
     printer-state-reasons
   - Fixed sluggish loading of the duplex-hint art on real hardware:
     its IFF decoder's debug output was hitting real stdio instead of
     MintPrint Settings' Workbench-safe status box, likely forcing a
     hidden console open. Its per-pixel colour-to-screen-pen matching
     is now cached instead of recomputed on every redraw
   - Reduced the GUI's stack requirement from 384 KiB to 128 KiB (the
     256 KiB IPP response buffers behind that figure are heap
     allocations now, not stack)
   - Relabeled "Printer IP/Host" to "Printer IPv4" - only numeric
     addresses were ever actually supported
   - Fixed entering an invalid address and pressing Query closing the
     entire Settings window instead of just reporting the error
   - Fixed garbled AmigaGuide help text (words run together with
     stray gaps) - the help file's @wordwrap/@smartwrap directives
     were reflowing hand-formatted, already-wrapped paragraphs and
     splicing their hanging-indent whitespace into the middle of
     lines

What's Changed

• MintPRINT 1.2.5: no more indefinite driver hangs, correct AmigaOS 3.9 detection, and several fixes by @boingball in #65
• Fix monochrome print mode producing colour output by @boingball in #67

Full Changelog: 1.2.4...1.2.6