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/blender-web-bwrap.apparmor

@@ -0,0 +1,6 @@
+abi <abi/4.0>,
+include <tunables/global>
+
+profile blender_web_bwrap /usr/bin/bwrap flags=(unconfined) {
+  userns,
+}