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7252f6acb7
Reconciles the belt-printer branch with upstream PRs through #13723. Six files had conflicts; three additional files needed manual follow-up fixes where the auto-merge produced code that referenced upstream-renamed fields or changed function signatures. Notable reconciliations: - TreeSupport.cpp: kept belt-floor early-exit branches around HEAD's drop-down logic, folded upstream's `(distance_to_top > 0 ? 1 : 0)` formula into the non-belt-floor path (upstream PR #11812). Dropped dead `roof_enabled`/`force_tip_to_roof` locals. - TreeSupport3D.cpp: combined upstream's safety-offset + remove_small changes with HEAD's belt-floor clip in the per-slice trim loop. Dropped HEAD's `else` block (superseded by upstream's rewritten bottom-contact propagation) and re-added the belt-floor clip into the new propagation loop. Gated the propagation on belt printers to prevent OOM when belt-floor clipping produces empty initial slices. - TriangleSelector.{cpp,hpp}: merged both new `select_patch` parameters (HEAD's `up_direction` and upstream's `select_partially`); body uses `dot(up_direction)` for the overhang angle check and forwards `select_partially` to `select_triangle`. - SupportMaterial.cpp: `slicing_params.soluble_interface` → `zero_gap_interface_bottom` in HEAD's `detect_belt_floor_bottom_contacts`, matching upstream's same-purpose rename at line 2495. - Custom.json, GCodeWriter.cpp: simple additive merges (kept entries / includes from both sides). Verified by building OrcaSlicer (RelWithDebInfo) after a full deps rebuild (Eigen v5.0.1, libigl v2.6.0 are now managed deps) and slicing a scaled Benchy on the NORMALIZER belt-printer profile without OOM. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>