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Object frames turn by any angle (quarter turns stay exact, so scenes along the axes render byte for byte as before); a box in a turned frame is a prism with its own corners. Rotation is kept as given (normalised to 0..360), no longer snapped to quarter turns. Depth sort: sprites whose plan outline is not their box carry their convex outline; when boxes overlap, an outline edge that separates two sprites orders them. A long diagonal wall sorts right against both sides. Joints (line_meet, end_cut, cut_box in util.rhai): where a piece off the axes is involved, corners are mitred and T-junctions slanted; fences put a corner post or pillar in its own sprite and mitre stone bases; Y joints let the lowest id run through. Streets: every end part is a cut e + k*w, so side streets come in at any angle (slanted sidewalk gaps), two streets meet in a mitre with seam patches; fixes a curve's outer sidewalk that was skipped when its kerb and back lines had different point counts. Studio: runs and drags keep to x/y or snap to 45 degree diagonals, Ctrl gives any angle; a road run turning 45 degrees gets a 45 degree curve; Rotation is a number box. Streets demo: a diagonal lane with a hedge. MCP guidance, SCRIPTING/README/ROADMAP. Tests: Rust 76, Studio and web checks green.