nx_print_e2e_test.nx

nx_print_e2e_test.nx -- THE end-to-end integration demo. Single runnable composes every shipped primitive into the operator-side workflow: 1. Build a synthetic mesh (Voron-cube-style tetrahedron at unit scale -- real STL load is operator-side via nx_stl_load_binary on a file buffer; we use the synthetic mesh in-test). 2. Run the full slicer pipeline (nx_slice_pipeline) to produce G-code into a memory buffer. 3. Write the G-code bytes to stdout (fd 1) so the operator can pipe to a .gcode file. 4. Build the Moonraker POST /printer/print/start request bytes for filename "cube.gcode" with API key "demo". 5. Write the Moonraker request bytes to stderr (fd 2) so the operator can inspect / pipe them into curl / nc for upload. 6. Return 0 if every step succeeded. Operator workflow: $ ./nx_print_e2e > cube.gcode 2> moonraker.req (then operator uploads cube.gcode + sends moonraker.req) Assertions (in-test verification): - G-code buffer non-empty + contains expected markers - Moonraker request buffer non-empty + contains expected markers - Both written to their respective fds expect_exit: 0 license_tier: ORIGINAL