chore: checkpoint web Blender migration source, tools and docs

Accumulated uncommitted work: GHOST Web backend, WebGL/GPU web layer,
web workflow engine and protocol, tooling, docs and task records.
Large generated evidence, user-testing archives, build snapshots and
imported test assets remain untracked.

Co-Authored-By: Claude Code <noreply@anthropic.com>

tools/web/server_operator_remesh.py

@@ -0,0 +1,35 @@
+"""Bounded Mesh RNA settings for the original Blender voxel remesh operator."""
+
+import math
+
+
+def remesh_property_specs(bpy):
+    prop = bpy.types.Mesh.bl_rna.properties["remesh_voxel_size"]
+    return [{
+        "id": "voxel_size",
+        "name": "voxel_size",
+        "type": "number",
+        "label": prop.name,
+        "description": prop.description,
+        "defaultValue": prop.default,
+        "min": max(float(prop.hard_min), 0.0001),
+        "max": min(float(prop.hard_max), 10.0),
+        "required": False,
+    }]
+
+
+def prepare_voxel_remesh(bpy, properties):
+    properties = dict(properties)
+    owner = bpy.context.active_object
+    if owner is None or owner.type != "MESH" or owner.library or owner.data.library:
+        raise RuntimeError("SERVER_OPERATOR_CONTEXT_BLOCKED: remesh requires an editable active mesh")
+    if owner.data.shape_keys is not None:
+        raise RuntimeError("SERVER_OPERATOR_CONTEXT_BLOCKED: remesh does not support shape keys")
+    voxel_size = properties.pop("voxel_size", owner.data.remesh_voxel_size)
+    bounds = remesh_property_specs(bpy)[0]
+    if (isinstance(voxel_size, bool) or not isinstance(voxel_size, (int, float))
+            or not math.isfinite(voxel_size)
+            or not bounds["min"] <= voxel_size <= bounds["max"]):
+        raise ValueError("SERVER_OPERATOR_PROPERTY_TYPE: voxel_size is outside the supported range")
+    owner.data.remesh_voxel_size = voxel_size
+    return properties