Roman Plotting Plot Types Lightcurve Residuals

<exception_path> Read examples/README.md only if one of these is true:

• The user explicitly asks to customize styling beyond strict defaults.
• The user needs a composite figure such as multiple lightcurves in shared subplots.
• The user asks for a gallery or side-by-side style comparison.
• The strict renderer cannot satisfy the requested layout without controlled post-processing.

When you enter this exception path:

• Render strictly first.
• Apply the smallest necessary customization afterward.
• Preserve manifest traceability indicating the figure was customized from strict output. </exception_path>

<microlensing_defaults> Apply these defaults unless the data or user request requires otherwise:

• Use HJD/BJD offset labeling when appropriate, such as HJD - 2450000.
• Invert the y-axis for magnitude plots.
• Enable TeX text rendering by default; use --no-tex only when needed.
• Include a residual panel for model-fit diagnostics.
• Distinguish observatories by both marker shape and color.
• Overlay a baseline model such as 1L1S when that comparison is scientifically relevant.
• Include an anomaly zoom inset when a short-timescale perturbation is present.
• For long baselines, allow model-driven head/tail trimming only with explicit threshold metadata. </microlensing_defaults>

<output_contract> Return:

• status: ok | warning | error
• summary: one-sentence description of produced figure(s)
• artifacts: absolute output paths
• validation: checklist results with any caveats
• provenance: input file paths and run timestamp </output_contract>