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>

my-tools/prepare_wbv2_physics_workflow.py

@@ -0,0 +1,49 @@
+"""Compile real native physics settings authoring; solver acceptance is deferred."""
+
+from wbv2_compilation_recipe import prepare
+
+
+JOB = "PHYSICS-SIMULATION-COVERAGE"
+PREPARATION_INPUTS = [
+    "my-tools/wbv2_compilation_recipe.py",
+    "blender-5.2.0/source/blender/web_engine/web_engine_physics_authoring.cpp",
+    "blender-5.2.0/source/blender/web_engine/web_engine_physics_authoring.hh",
+    "web/app/src/app/PhysicsSettingsEditor.tsx",
+    "web/app/src/app/PhysicsSettingsEditor.css",
+    "web/protocol/physics-simulation.ts",
+]
+
+
+if __name__ == "__main__":
+    sources = [
+        "blender-5.2.0/source/blender/web_engine/web_engine_main_state.cpp",
+        "blender-5.2.0/source/blender/web_engine/web_engine_api.cpp",
+        "blender-5.2.0/source/blender/web_engine/web_engine_physics_authoring.cpp",
+        "blender-5.2.0/source/blender/modifiers/intern/MOD_cloth.cc",
+        "blender-5.2.0/source/blender/modifiers/intern/MOD_fluid.cc",
+        "blender-5.2.0/source/blender/modifiers/intern/MOD_particlesystem.cc",
+        "blender-5.2.0/source/blender/modifiers/intern/MOD_util.cc",
+        "blender-5.2.0/source/blender/blenkernel/intern/rigidbody.cc",
+        "blender-5.2.0/source/blender/blenkernel/intern/fluid.cc",
+        "blender-5.2.0/source/blender/makesrna/intern/rna_cloth.cc",
+        "blender-5.2.0/source/blender/makesrna/intern/rna_fluid.cc",
+        "blender-5.2.0/source/blender/makesdna/DNA_pointcache_types.h",
+    ]
+    prepare(
+        JOB,
+        "Edit rigid body, Cloth and Fluid native settings; configure existing particle caches "
+        "from the Physics panel and retain real Main data when saving. Reuse native data "
+        "creation and serialization callbacks. Browser Bullet simulation is not enabled; "
+        "solver execution and runtime acceptance remain separate unfinished work.",
+        ["web-command:setRigidBodySettings", "web-command:setClothSettings",
+         "web-command:setFluidSettings", "web-command:setParticleCache",
+         "web-command:setSimulationPlayback"],
+        sources,
+        PREPARATION_INPUTS + sources + [
+            "my-tools/prepare_wbv2_physics_workflow.py", "web/app/src/app/App.tsx",
+            "web/app/src/app/app-shell.css",
+            "blender-5.2.0/source/blender/web_engine/CMakeLists.txt",
+            "blender-5.2.0/source/blender/modifiers/CMakeLists.txt",
+        ],
+        ["web/protocol/physics-commands.ts"],
+    )