A no-auth virtual folder so anyone can grab a tool and run it against their own
local filesystem: GET /_apps/ is an index (Download / Open links); GET
/_apps/<tool>.html serves that tool's HTML (?download forces a save). Prefers
the site .zddc.zip bundle member (freshest), falls back to the binary's
embedded copy; tables/form come from the embedded tables bundle. Carries no
data, so it's served before the ACL/cascade and the reserved-prefix guard;
`_`-prefixed + virtual means no collision with content.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
