Module plot 

Plot spec encoding and data preparation for chart cells.

This module provides:

• PlotSpec: Specification for a plot (type, range, labels)
• PlotData: Prepared data for rendering (frontend-agnostic)
• Encoding/decoding of plot specs to/from cell display strings

The engine returns a tagged string for plot formulas (e.g. =BARCHART(A1:A10)). The TUI detects and renders these in a modal.

Structs

PlotData

Prepared data for rendering a plot (frontend-agnostic).

PlotSpec

Specification for a plot (parsed from a plot cell).

Enums

PlotKind

Constants

PLOT_PREFIX

Functions

format_plot_spec

parse_plot_spec