feat(editor): add --audit-tree to flag corrupted/misnamed Wowee files

Walks a directory recursively and groups problems by category:
too-small (file under 16 bytes — can't hold a header),
unknown-magic (.w* file whose magic is not in the format table),
ext-mismatch (extension says one format but the magic says
another — usually from a renamed file), magic-no-ext (file with
recognized Wowee magic but no .w* extension), and header-trunc
(magic matches but the rest of the header is truncated). Returns
exit 1 if any issue is found, so it composes into shell pipelines
and CI checks. JSON sidecar via --json.

Catches the kinds of breakage that --summary-dir silently rolls
into the "unrecognized" bucket — a renamed .wsrg file masquerading
as .wsct shows up cleanly here but would otherwise be invisible.
Like every cross-format utility this reuses cli_format_table.cpp,
so new formats are audited automatically. CLI flag count
906 -> 907.

tools/editor/cli_arg_required.cpp

@@ -136,7 +136,7 @@ const char* const kArgRequired[] = {
     "--export-wliq-json", "--import-wliq-json",
     "--info-magic", "--summary-dir", "--rename-by-magic",
     "--bulk-rename-by-magic", "--touch-tree", "--tree-summary-md",
-    "--catalog-grep", "--diff-headers",
+    "--catalog-grep", "--diff-headers", "--audit-tree",
     "--gen-animations", "--gen-animations-combat", "--gen-animations-movement",
     "--info-wani", "--validate-wani",
     "--export-wani-json", "--import-wani-json",