feat: replace ship and ball placeholder meshes with Blender-modeled assets

Ship gets a greebled hull, tapered nose, swept canopy, twin engine nacelles,
and tail fin (built via the vendored Blender MCP, generator committed at
tools/blender/gen_ship.py) in place of the 5 flat primitives. The ball is
fully remodeled as a smooth round sphere with a crossed emissive accent
pattern (gen_ball.py), replacing the old flat-shaded gold_ball rather than
just tweaking its material.

Node names (Nose/TailFin) are preserved for Ship._apply_team_color(), and
the RigidBody3D/CollisionShape3D physics on both ship.tscn and ball.tscn are
untouched so RL-trained bots and flight feel stay valid. Each part's mesh is
extracted to a standalone .res (tools/blender/extract_meshes.gd) rather than
referenced via glb::ArrayMesh_xxx sub-paths, which don't reliably resolve
across scene files and were silently rendering both models invisible.

Game/assets/models/ball.glb.import

@@ -3,18 +3,18 @@
 importer="scene"
 importer_version=1
 type="PackedScene"
-uid="uid://cpawiqbrjyip5"
-path="res://.godot/imported/gold_ball.glb-704aa0b9ad2b63d580121e20c4482485.scn"
+uid="uid://dj4x6k2phqsas"
+path="res://.godot/imported/ball.glb-54e57a8d163cfef28e5e007118be03c5.scn"
 
 [deps]
 
-source_file="res://assets/models/gold_ball.glb"
-dest_files=["res://.godot/imported/gold_ball.glb-704aa0b9ad2b63d580121e20c4482485.scn"]
+source_file="res://assets/models/ball.glb"
+dest_files=["res://.godot/imported/ball.glb-54e57a8d163cfef28e5e007118be03c5.scn"]
 
 [params]
 
-nodes/root_type="Node3D"
-nodes/root_name="Scene Root"
+nodes/root_type=""
+nodes/root_name=""
 nodes/root_script=null
 mesh_library/use_node_names_as_mesh_names=false
 array_mesh/deduplicate_surfaces=true
@@ -39,21 +39,7 @@ import_script/path=""
 materials/extract=0
 materials/extract_format=0
 materials/extract_path=""
-_subresources={
-"meshes": {
-"gold_ball_Sphere": {
-"generate/lightmap_uv": 0,
-"generate/lods": 0,
-"generate/shadow_meshes": 0,
-"lods/normal_merge_angle": 60.0,
-"lods/normal_split_angle": 25.0,
-"save_to_file/enabled": true,
-"save_to_file/fallback_path": "res://assets/models/gold_ball.res",
-"save_to_file/make_streamable": "",
-"save_to_file/path": "uid://ucw1lyo43yi4"
-}
-}
-}
-gltf/naming_version=0
+_subresources={}
+gltf/naming_version=2
 gltf/embedded_image_handling=1
-gltf/texture_map_mode=0
+gltf/texture_map_mode=1

Game/assets/models/ship_canopy.glb.import

@@ -0,0 +1,45 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://dqsruccgu70n6"
+path="res://.godot/imported/ship_canopy.glb-eb012be4d2aaadd3ad4ce782ee3cac26.scn"
+
+[deps]
+
+source_file="res://assets/models/ship_canopy.glb"
+dest_files=["res://.godot/imported/ship_canopy.glb-eb012be4d2aaadd3ad4ce782ee3cac26.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+mesh_library/use_node_names_as_mesh_names=false
+array_mesh/deduplicate_surfaces=true
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
+gltf/texture_map_mode=1

Game/assets/models/ship_engine_l.glb.import

@@ -0,0 +1,45 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://3kf7d62qivgv"
+path="res://.godot/imported/ship_engine_l.glb-36865e4bdf2ded2bf550380b5e5a31da.scn"
+
+[deps]
+
+source_file="res://assets/models/ship_engine_l.glb"
+dest_files=["res://.godot/imported/ship_engine_l.glb-36865e4bdf2ded2bf550380b5e5a31da.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+mesh_library/use_node_names_as_mesh_names=false
+array_mesh/deduplicate_surfaces=true
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
+gltf/texture_map_mode=1

Game/assets/models/ship_engine_r.glb.import

@@ -0,0 +1,45 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://w3ps73chyt2t"
+path="res://.godot/imported/ship_engine_r.glb-214ece30da53490ddc1cb491c37e947a.scn"
+
+[deps]
+
+source_file="res://assets/models/ship_engine_r.glb"
+dest_files=["res://.godot/imported/ship_engine_r.glb-214ece30da53490ddc1cb491c37e947a.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+mesh_library/use_node_names_as_mesh_names=false
+array_mesh/deduplicate_surfaces=true
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
+gltf/texture_map_mode=1

Game/assets/models/ship_hull.glb.import

@@ -0,0 +1,45 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://31h3nccel10k"
+path="res://.godot/imported/ship_hull.glb-e35cc22e21d218aa71b911f28b0dd14f.scn"
+
+[deps]
+
+source_file="res://assets/models/ship_hull.glb"
+dest_files=["res://.godot/imported/ship_hull.glb-e35cc22e21d218aa71b911f28b0dd14f.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+mesh_library/use_node_names_as_mesh_names=false
+array_mesh/deduplicate_surfaces=true
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
+gltf/texture_map_mode=1

Game/assets/models/ship_nose.glb.import

@@ -0,0 +1,45 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://yio14umwtku1"
+path="res://.godot/imported/ship_nose.glb-84e1b2cefdde564b2174201282e01d4e.scn"
+
+[deps]
+
+source_file="res://assets/models/ship_nose.glb"
+dest_files=["res://.godot/imported/ship_nose.glb-84e1b2cefdde564b2174201282e01d4e.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+mesh_library/use_node_names_as_mesh_names=false
+array_mesh/deduplicate_surfaces=true
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
+gltf/texture_map_mode=1

Game/assets/models/ship_tailfin.glb.import

@@ -0,0 +1,45 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://c1i2lsx58u146"
+path="res://.godot/imported/ship_tailfin.glb-d9d8f37674e2cf04cd3606e5c7a5c641.scn"
+
+[deps]
+
+source_file="res://assets/models/ship_tailfin.glb"
+dest_files=["res://.godot/imported/ship_tailfin.glb-d9d8f37674e2cf04cd3606e5c7a5c641.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+mesh_library/use_node_names_as_mesh_names=false
+array_mesh/deduplicate_surfaces=true
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
+gltf/texture_map_mode=1