diff --git a/tooling/planet-gen/sol_data/download.py b/tooling/planet-gen/sol_data/download.py
index 1a54fae99..e785db536 100644
--- a/tooling/planet-gen/sol_data/download.py
+++ b/tooling/planet-gen/sol_data/download.py
@@ -6,7 +6,6 @@ Supports resume for large files and optional SHA-256 verification.
 """
 
 import hashlib
-import os
 import sys
 import urllib.request
 from pathlib import Path
diff --git a/tooling/planet-gen/sol_data/earth.py b/tooling/planet-gen/sol_data/earth.py
index ba3797ca0..910e77ed9 100644
--- a/tooling/planet-gen/sol_data/earth.py
+++ b/tooling/planet-gen/sol_data/earth.py
@@ -12,20 +12,16 @@ use col 0 = 180°W natively. Natural Earth uses -180 to 180 longitude.
 """
 
 import json
-import math
-import os
-import struct
 import zipfile
 import numpy as np
 from pathlib import Path
-from scipy.ndimage import gaussian_filter
 
 from sol_data.download import ensure_cached
 from sol_data.shared import (
     GRID_W, GRID_H,
-    load_tiff_as_array, load_raw_binary, load_image_as_elevation,
+    load_tiff_as_array,
     resample_to_grid, normalize_01, compute_sea_level,
-    greenwich_to_dateline, compute_hillshade, assemble_terrain,
+    compute_hillshade, assemble_terrain,
 )
 
 # ─── Data source URLs ───────────────────────────────────────────────────────
diff --git a/tooling/planet-gen/sol_data/luna.py b/tooling/planet-gen/sol_data/luna.py
index 657a9eb0c..824524edd 100644
--- a/tooling/planet-gen/sol_data/luna.py
+++ b/tooling/planet-gen/sol_data/luna.py
@@ -19,7 +19,7 @@ from pathlib import Path
 from sol_data.download import ensure_cached
 from sol_data.shared import (
     GRID_W, GRID_H,
-    load_raw_binary, load_tiff_as_array, load_image_as_elevation,
+    load_raw_binary,
     resample_to_grid, normalize_01,
     compute_hillshade, assemble_terrain,
     temperature_grid_analytical,
diff --git a/tooling/planet-gen/sol_data/mars.py b/tooling/planet-gen/sol_data/mars.py
index aaf816b06..0882d071e 100644
--- a/tooling/planet-gen/sol_data/mars.py
+++ b/tooling/planet-gen/sol_data/mars.py
@@ -16,14 +16,13 @@ Mars properties:
 """
 
 import numpy as np
-from pathlib import Path
 
 from sol_data.download import ensure_cached
 from sol_data.shared import (
     GRID_W, GRID_H,
-    load_raw_binary, resample_to_grid, normalize_01, compute_sea_level,
+    load_raw_binary, resample_to_grid, normalize_01,
     compute_hillshade, assemble_terrain,
-    temperature_grid_analytical, temperature_equilibrium_K,
+    temperature_grid_analytical,
 )
 
 # MOLA MEGDR — 4 pixels per degree (1440 × 720), big-endian int16
diff --git a/tooling/planet-gen/sol_data/shared.py b/tooling/planet-gen/sol_data/shared.py
index 869874b96..939c5d3a2 100644
--- a/tooling/planet-gen/sol_data/shared.py
+++ b/tooling/planet-gen/sol_data/shared.py
@@ -10,7 +10,6 @@ All loaders produce arrays compatible with the planet_simulation terrain dict:
 """
 
 import math
-import struct
 import numpy as np
 from scipy.ndimage import zoom
 from PIL import Image
diff --git a/tooling/planet-gen/sol_data/titan.py b/tooling/planet-gen/sol_data/titan.py
index 78ffcce46..6efb31482 100644
--- a/tooling/planet-gen/sol_data/titan.py
+++ b/tooling/planet-gen/sol_data/titan.py
@@ -26,7 +26,6 @@ from sol_data.shared import (
     GRID_W, GRID_H,
     load_image_as_elevation, resample_to_grid, normalize_01,
     compute_hillshade, assemble_terrain,
-    temperature_grid_analytical,
 )
 
 # Cassini ISS global mosaic
diff --git a/tooling/planet-gen/sol_import.py b/tooling/planet-gen/sol_import.py
index f117b5f02..38deea31a 100644
--- a/tooling/planet-gen/sol_import.py
+++ b/tooling/planet-gen/sol_import.py
@@ -32,7 +32,7 @@ if _venv_python.exists() and Path(sys.executable).resolve() != _venv_python.reso
 
 import numpy as np
 
-from planet_simulation import simulate, compute_biome, compute_hillshade
+from planet_simulation import simulate
 from render_heightmap import render_heightmap
 from generate import _build_markers