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/incremental-web-build.mjs

@@ -10,11 +10,13 @@ if (state?.fingerprint === currentFingerprint && fs.existsSync(index)) {
   process.exit(0);
 }
 
-const typecheck = spawnSync(process.execPath, ["tools/web/run-incremental-typecheck.mjs"], {
-  cwd: root,
-  stdio: "inherit",
-});
-if (typecheck.status !== 0) process.exit(typecheck.status ?? 1);
+if (process.env.WBV2_SKIP_TYPECHECK !== "1") {
+  const typecheck = spawnSync(process.execPath, ["tools/web/run-incremental-typecheck.mjs"], {
+    cwd: root,
+    stdio: "inherit",
+  });
+  if (typecheck.status !== 0) process.exit(typecheck.status ?? 1);
+}
 const vite = spawnSync(process.execPath, ["./node_modules/vite/bin/vite.js", "build", "--config", "app/vite.config.ts"], {
   cwd: `${root}/web`,
   stdio: "inherit",