Publication-grade plots with REAL journal physical widths (Nature/Science/IEEE/ACM/NeurIPS), Type-42 font embedding (pdf.fonttype=42, arXiv/LaTeX-safe), colorblind-safe palettes by default, and optional real `scienceplots` integration. Covers line / bar / boxplot / heatmap. This is the canonical paper plotting skill. Outputs PDF/PNG. Use when the user asks for journal-style figures / IEEE-style line plots / paper figures / publication-grade charts / camera-ready figures / figures sized to Nature/Science layout / heatmaps / publication plot. Do NOT use for architecture diagrams (use arch-diagram) or neuron-level networks (use neural-net-draw).