chore(docs): refresh the Astryx surface inventory total

CI failed on the surface gate with only the `.md` stale:

    - docs/astryx-surface-file-inventory.md does not match generator output

The diff is one line — `232 files … aligned 231` becomes `233 … 232`. A
file that renders Astryx arrived on `main` while this branch was out, and
`.paths` came with it; the totals line in the table did not.

Worth naming because it is a shape this branch has now hit twice: the gate
passed locally and failed in CI, because CI checks the branch MERGED with
current `main` and I was four commits behind. Running the gates on an
un-rebased branch proves less than it looks like it does. Rebased onto
`8fa1e894` and regenerated with `astryx:surface-inventory:write`.

Generated-by: Claude Opus 5 via Claude Code

Author: Joob1n

docs/astryx-surface-file-inventory.md

@@ -6,7 +6,7 @@ Generated against `@astryxdesign/core@0.5.0` (194 component exports).
 
 Wiki bar: Design Conventions · API Use-the-System · Theming · Container Padding.
 
-**Totals:** 232 files — blocker 0, reimplementation 0, polish 1, aligned 231.
+**Totals:** 233 files — blocker 0, reimplementation 0, polish 1, aligned 232.
 
 ## Exclusions (explicit)