forked from 1b-agent/opencadstudio-upstream
Five reviewers (PDF, snap, commands, otrack/help, printing) covered the eight issue-fix commits; every blocker and major is fixed here. Printing (#1261 follow-up): - printto params now quote the printer name and pad the empty driver/ port slots handlers substitute ("Microsoft Print to PDF" was split into three arguments and the job silently lost). - Level-2 enumeration also merges when the level-4 list omits the configured default, not only when it is empty; a level-2 error no longer discards the default-printer merge. - The printer list loads in a background task instead of blocking the UI thread (level-2 queries can wait out RPC timeouts). - CTB registration: collisions keep the existing file but now say so, and only container-parsed tables are registered (the permissive zlib heuristic stays session-only so junk cannot persist). Snapping (#1030/#1319 follow-up): - Edge-wire key_vertices gain NaN separators: junctions between unrelated mesh edges no longer fabricate phantom midpoints. - The wire cap counts segments (not separator points) and decimates instead of dropping, so dense meshes keep partial endpoint coverage instead of losing snap entirely. - f64 endpoint recovery is a one-shot per-wire map instead of an O(points x geoms) rescan on every mouse move. Commands (#1082 class): the same typed-value-on-web bug also hit CYLINDER/BOX/WEDGE/CONE/PYRAMID heights, HELIX final height (wrong value, not just dropped), and SWEEP reference/new lengths — all now commit as text at exactly those steps, each pinned by a regression test that fails without the override (plus the missing native-route twin for EXTRUDE). PDF (#702 follow-up): heavy CTB pens bypass the Form XObject (their half-width exceeds the /BBox SDF margin and was flat-chopped), CTM scale entries round to 4 significant digits (0.01 quantized small text by ~1%), degenerate quads skip emission, the atlas snapshot is taken once per export instead of per text entity, and the rounding comments no longer conflate page points with glyph-plane units. OTRACK (#1313 follow-up): the guide's polar quantization diverges from the snapper's drafting-gated polar during window-corner drags — documented; an orphaned grid-step doc block is reunited with its function.