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/build-runtime-evidence-plan.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""Produce the bounded evidence capture plan for WBV2-P1424-001.
+
+This planner is intentionally side-effect free: implementation phase records the
+exact Chromium/native workflows to run later, without claiming they passed.
+"""
+import json
+from pathlib import Path
+
+TASK = "WBV2-P1424-001"
+CONTRACTS = Path("tests/golden") / TASK / "behavior-contracts.json"
+OUT = Path("tests/golden") / TASK / "runtime-evidence-plan.json"
+
+def main():
+    data = json.loads(CONTRACTS.read_text())
+    plan = {
+        "schemaVersion": 1,
+        "task": TASK,
+        "status": "PENDING_USER_RUNTIME_VALIDATION",
+        "runner": "Chromium only",
+        "sourceContracts": str(CONTRACTS),
+        "steps": [],
+    }
+    for contract in data["contracts"]:
+        module = contract["module"]
+        plan["steps"].append({
+            "module": module,
+            "positive": contract["positive"],
+            "negative": contract["negative"],
+            "recovery": contract["recovery"],
+            "requiredArtifacts": [
+                f"{module.lower()}-before.blend",
+                f"{module.lower()}-after.blend",
+                f"{module.lower()}-negative.blend",
+                f"{module.lower()}-undo.blend",
+                f"{module.lower()}-redo.blend",
+                f"{module.lower()}-reopened.blend",
+                f"{module.lower()}-chromium.json",
+            ],
+            "result": "NOT_RUN",
+        })
+    OUT.write_text(json.dumps(plan, indent=2, ensure_ascii=False) + "\n")
+
+if __name__ == "__main__":
+    main()