CLI LaTeX rendering

GEODE renders math in LLM replies readably in the terminal. The implementation is one module, core/ui/latex.py; the entry points are render_latex(src, block=...) and extract_and_render_inline, which finds math spans in streaming text. The caller is the interactive loop (core/cli/interactive_loop.py).

The two tiers

Tier 1   pylatexenc LatexNodes2Text   inline + block. LaTeX → flat Unicode, one line
Tier 2   latex2sympy2 + sympy.pretty  block only. fractions/integrals as a 2D Unicode block
fallback raw source                   when both fail. never raises

Inline (block=False) skips Tier 2 entirely so one-line flow stays predictable. Blocks try Tier 2 only when _has_tier2_construct spots a token worth 2D treatment, and fall back silently to Tier 1 when parsing or pretty-printing fails. If Tier 1 fails too, the raw input comes back unchanged.

Detection heuristics

extract_and_render_inline handles both delimited math ($...$, $$...$$) and delimiter-less candidates, with guards against false positives: markdown code spans are skipped, / in a file-path context is left alone (_looks_like_path_context), and digit-base subscripts plus nested superscripts are handled. The output contract itself is instructed to the model by with_math_output_formatting in core/llm/prompt_assembler.py.

Failure modes

Regression suite

tests/core/ui/test_ui_latex.py, tests/core/ui/test_cli_latex_uiux.py, and tests/core/cli/test_interactive_loop_latex.py pin multi-line collapse, the delimiter-less heuristic, path context, and digit-base cases.