chore(registry): refresh the census anchor main moved

Main's own commits shifted the `loopx/cli.py::main` registry read from line 846
to 835, which leaves the checked-in manifest stale on b6c3d3d: regenerating it
there changes exactly that one field, and the two architecture tests that read it
fail on an unmodified main tree. Regenerated in place with
scripts/generate_project_registry_io_manifest.py; this PR moves no Python line.

Signed-off-by: karenchuu <25980598+karenchuu@users.noreply.github.com>

Author: karenchuu

loopx/semantics/project_registry_io_manifest_v1.json

@@ -487,7 +487,7 @@
     },
     {
       "site": "loopx/cli.py::<module>.main::codec_read:load_project_registry#1",
-      "line": 846,
+      "line": 835,
       "column": 17,
       "kind": "codec_read",
       "api": "load_project_registry",