[alowpoly]

TRAPPIST-1e and Proxima Centauri b showed only time means of their climate models. Each now has a "Starlight on the ground" stepper from the Met Office Unified Model runs of Cohen et al. 2023 (Zenodo 7752337, CC BY 4.0): the starlight reaching the ground in the release's daily snapshots, through one cloud cycle from the paper's Table 3. TRAPPIST-1e has 20 steps a day apart (19.4-day cycle); Proxima b has 16 steps 10 days apart (157.5-day cycle). One scale, 0 to 600 W/m²; the defaults are unchanged. The simulation route gained steppers, and the steps of one NetCDF-4 run share their structure's byte ranges (3.8 MB kept of 16.6 GB). Measured on the release: a day-side cell's light changes by a median 33 W/m² a day on TRAPPIST-1e, while its surface temperature changes 0.6 K. Method: TRAPPIST-1e README, Proxima b README.

Limits: model snapshots of an undetected atmosphere; the warm and dry runs are not shown.

• Baked both objects (prepare-object.mts); arrival pictures unchanged.
• Published the bytes (publish-runtime-assets.mts --since=origin/main): 154 keys verified live.
• Committed the refreshed inventory.json files, and no baked files.

Clean: simulation-dataset.test.mts 10/10 (new stepper case), new-object.test.mts 43/43, hdf5-netcdf.test.mts, check-color-spelling, check-no-hashes, check-prepared-delivery, typescript-ownership. simulations.test.mts fails to load a telescope-core module this PR does not touch, the same on main.