previously, only real folders could be listed by a webdav client;
a server which does not have any filesystem paths mapped to `/`
would cause clients to panic when trying to list the server root
now, assuming volumes `/foo` and `/bar/qux` exist, when accessing `/`
the user will see `/foo` but not `/bar` due to limitations in `walk`,
and `qux` will only appear when viewing `/bar`
a future rework of the recursion logic should further improve this
drop chunk-hashes in the up2k snap, plus other insignificant attribs
to reduce both the snapfile size and the ram usage by about 90%
reduces startup/shutdown time by a lot since there's less to serdes
(does not affect -e2d which was already optimal)
other changes:
* improve incoming-eta accuracy when the initial handshake
was made a long time before the upload actually started
* move the list of incoming files in the controlpanel to the top
* do not absreal paths unless necessary
* do not determine username if no users configured
* impacket 0.12 fixed the foldersize limit, but now
you get extremely poor performance in large folders
so the previous workaround is still default-enabled
* pyz: yeet the resource tar which is now pointless thanks to pkgres
* cache impresource stuff because pyz lookups are Extremely slow
* prefer tx_file when possible for slightly better performance
* use hardcoded list of expected resources instead of dynamic
discovery at runtime; much simpler and probably safer
* fix some forgotten resources (copying.txt, insecure.pem)
* fix loading jinja templates on windows
add support for reading webdeps and jinja-templates using either
importlib_resources or pkg_resources, which removes the need for
extracting these to a temporary folder on the filesystem
* util: add helper functions to abstract embedded resource access
* http*: serve embedded resources through resource abstraction
* main: check webdeps through resource abstraction
* httpconn: remove unused method `respath(name)`
* use __package__ to find package resources
* util: use importlib_resources backport if available
* pass E.pkg as module object for importlib_resources compatibility
* util: add pkg_resources compatibility to resource abstraction
* show media tags in shares
* html hydrator assumed a folder named `foo.txt` was a doc
* due to sessions, use `pwd` as password placeholder on services
* exponentially slow upload handshakes caused by lack of rd+fn
sqlite index; became apparent after a volume hit 200k files
* listing big folders 5% faster due to `_quotep3b`
* optimize `unquote`, 20% faster but only used rarely
* reindex on startup 150x faster in some rare cases
(same filename in MANY folders)
the database is now around 10% larger (likely worst-case)
reduce the overhead of function-calls from the client thread
to the svchub singletons (up2k, thumbs, metrics) down to 14%
and optimize up2k chunk-receiver to spend 5x less time bookkeeping
which restores up2k performance to before introducing incoming-ETA
dedup is still encouraged and fully supported, but
being default-enabled has caused too many surprises
enabling `--dedup` restores the previous default behavior
also renames `--never-symlink` to `--hardlink-only`
