Modifiers

15 region-safe transformations — they change the part, not its contract.

• add_bone_windows Bone-like organic lightening windows: seeded voronoi cells with heavy corner smoothing, shrunk for a guaranteed ligament and filtered against every keepout. The main consumer of aesthetic_lightening zones — no rib graph, just honest organic perforation. Planar faces only: side-profile bodies without a declared face window are refused until Bio-3's oriented windows. allowed by 5
• add_countersunk_holes Vertical through-holes with conical countersinks so flat-head screws seat flush. Applies only to a mounting surface; hole positions define fastener keepout regions downstream cuts must respect. allowed by 1
• add_grid_slot_field Parallel slot field (vent/lightening slats) across the target region; each slot survives only if fully clear of every keepout. allowed by 5
• add_hex_perforation Recessed hex lightening field. Centers are computed in the Form IR and filtered against every keepout region BEFORE any geometry is cut, so a hex cell can never touch a screw zone or stress root. allowed by 14
• add_magnet_pockets Blind pockets for press-in disc magnets, entered from the chosen face (bottom = hidden mounting magnets, printed face stays closed). The skin past the blind end is verified intact. allowed by 1
• add_phyllotaxis_field Vogel sunflower-spiral hole field (r = c*sqrt(k), golden-angle steps) — the deterministic organic pattern; spacing guarantees the ligament by construction and the measured check confirms it. allowed by 4
• add_ribs ADDITIVE stiffening ribs across the target region's short dimension — the additive half of the modifier kernel. Ribs skip keepouts (a rib over a countersink buries the head) and are verified WELDED by a solid-fraction probe. allowed by 1
• add_strap_slots A pair of wide through slots in a strap tab — a 15..40 mm webbing/velcro strap threads down one slot, under the strap bar, up the other (wave P2 wearable closure). The slot pair pierces the tab and is guarded against the arm circle: a strap cut can never breach the body cavity. Fails loudly when the tab cannot host the pair. allowed by 3
• add_vein_ribs Raised vein ridges flowing across a face with a seeded rhythm — the biomorphic veins as a standalone additive field (no full style needed). allowed by 6
• add_voronoi_field Organic voronoi lightening field. The seed is an explicit parameter — the same YAML always yields the same cells. Cells are Lloyd-relaxed, shrunk by half the ligament (webs are a guaranteed minimum, not an accident) and filtered against every keepout before any geometry is cut. allowed by 8
• add_zip_tie_slots A pair of through slots flanking the region center — a zip tie threads down one, under the bridge, up the other. Fails loudly if the pair cannot clear the keepouts. allowed by 1
• apply_biomorphic_exoskeleton Grows a load-aware organic rib network over a panel: keepout masks -> surface samples -> rib graph (Gabriel, seeded, deterministic) -> root-to-tip tapered ribs -> organic windows between them. Primary target is an exoskeleton_panel (rib growth surface); aesthetic_lightening is the fallback for plate-like cores. IR-first: Bio-2 attaches the checkable skeleton intent, Bio-3 materializes it in CAD — the bio features stay honestly un-built until the topology probes pass. Windows are the DUAL of the rib graph (cells around rib-face centers), explicitly clipped to rib_radius + min_ligament/2 clearance from every rib. On a horizontal/tilted panel the windows cut through; on a developable profile_surface (Bio-4M stage B — the branch clamp body unrolled to (s, x)) the ribs are hierarchical (fat PRIMARY diameter on the load paths, thin SECONDARY elsewhere) and the windows are RECESSES, never through-cuts — a see-through window would breach the saddle/channel, so the builder publishes a safe_recess depth. A side-profile body WITHOUT a declared face window is still refused (the AABB fallback would slice the interior). allowed by 5
• biomech_surface_texture Biomechanical micro-texture (grain/speckle/grooves) for a region — the per-region spelling of what the style's vein_rhythm does part-wide. DECLARED AHEAD OF ITS APPLICATOR: applying it today yields an honest engine-gap WARN; it claims no features until Bio-3 emits real geometry.
• fillet_soften Best-effort softening of exposed external edges. Never applied to seal or contact surfaces (their radii are owned by the surface style). allowed by 34
• organic_taper_outer_shell Organic taper/flow of the outer shell silhouette (bone-like swell and thinning). DECLARED AHEAD OF ITS APPLICATOR: applying it today yields an honest engine-gap WARN and promises nothing — it claims no features and subscribes no validators until the Bio-3 surface engine lands.