Natsura 0.6.1.1

Traits hotfix - if upgrading scenes please wait for upgrade guide

• Natsura Assembly Decoration — Add Trait button uses the same icon as Add Effector for consistency.
• Natsura Assembly Decoration — Adding a trait no longer throws ValueError: not enough values to unpack — graph-attribute picks were returning a bare string instead of the expected (name, mappable) payload.
• Natsura Assembly Decoration — Each filled trait row now has a single actions menu (Edit on Geometry — only for the paintable Size/Angle dimensions — / Replace With… / Remove Trait); the Edit action enters the existing classify viewer state.
• Natsura Assembly Decoration — New Add Trait picker pulls from two sources: the internal TRAIT node's traits list (mappable) and dependency-graph/skeleton float attributes (not mappable).
• Natsura Assembly Decoration — Removing a trait clears just that slot in place instead of rebuilding the whole multiparm (the old rebuild was the crash path).
• Natsura Assembly Decoration — Skeleton/graph-sourced traits no longer show a meaningless bias slider and map button — they hide both and show a "from skeleton — not mappable" note.
• Natsura Assembly Decoration — The Add Trait picker now actually finds the internal trait source — it was looking for a node named TRAITS; the node is TRAIT (singular).
• Natsura Assembly Decoration — The per-row add affordance is reachable again — the old empty-slot button lived inside a row that's hidden when empty, so it could never be clicked; the Add Trait button now sits below the list and is always visible.
• Natsura Assembly Decoration — Trait list no longer crashes Houdini past ~10 entries — the dynamic-resize auto-sync that rebuilt the multiparm on every cook is gone, replaced by a fixed-size (N=8) picker.
• Natsura Assembly Decoration — Traits stranded at slots 9-10 (with 1-8 empty) now compact down to 1-2 on scene open, and the count is clamped to 8 — compact_traits runs from OnLoaded so already-saved scenes self-repair.