Readme update

readme.md

@@ -41,9 +41,11 @@ noise is about 3 %. The sample is the Landsat 8 example scene
 (`examples/scenes/landsat8.toml`). `cargo bench -p resolved` reproduces the
 numbers, and `resolved render --timings N` shows the per-pass split.
 
-Planned tiers: L1 adds self-shadowing, Earthshine and albedo maps (M2); C1
-and C2 add lens distortion, blur and detector noise (M3); L2 adds measured
-materials and the atmosphere (M4); L3 is path traced (M5).
+Planned tiers: L1 adds Earth's surface, shadows on the target, Earthshine
+and Moonshine, the Moon's albedo map, the Sun's limb darkening and eclipses
+seen on Earth and the Moon (M2); C1 and C2 add pixel-area sampling, lens
+distortion, blur and detector noise (M3); L2 adds measured materials and the
+atmosphere (M4); L3 is path traced (M5).
 
 ## Usage
 
@@ -138,16 +140,17 @@ cargo run --release -p resolved-cli -- render \
 
 ## Status
 
-M1 in progress: the library renders Earth, Moon, Sun and targets to DN
-through `Renderer`, and the CLI renders scene files; benchmarks are still to
-come. The work is
-tracked as Gitea milestones, each split into one issue per change:
+M1 is complete: the library renders Earth, Moon, Sun and targets to DN
+through `Renderer`, the CLI renders scene files, and the benchmarks give the
+L0 / C0 baseline above. M2 is in progress: lighting L1 so far draws Earth's
+surface from Blue Marble and shadows on the target. The work is tracked as
+Gitea milestones, each split into one issue per change:
 
 | Milestone | Scope |
 |---|---|
 | M1 | Scene API, headless wgpu, analytic Earth/Moon/Sun, glTF and STL targets, Lambert shading with eclipse, pinhole camera, radiance to DN, CLI, benchmark baseline |
-| M2 | Self-shadowing, Earthshine and Moonshine, Earth and Moon albedo maps, Sun limb darkening |
-| M3 | Lens distortion, PSF, detector noise, saturation and blooming, stars |
+| M2 | Earth surface image, self-shadowing, Earthshine and Moonshine, Moon albedo map, Sun limb darkening, lunar and solar eclipses on the bodies, lower readback overhead |
+| M3 | Pixel-area sampling, lens distortion, PSF, detector noise, saturation and blooming, stars, apparent positions |
 | M4 | BRDF and spectral materials, atmospheric scattering, clouds, lunar terrain |
 | M5 | Portable ray tracing, path tracing, label outputs for ML |
 | M6 | Validation against lunar, Earth and Mitsuba references; motion blur, rolling shutter, stray light; multi-band and 4k |