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**Removing a member.** The owner can do it from the Members tab, and it
is two halves in the order that fails safe: the node stops serving the
group key first (an operator-signed request, so a paired browser only),
then the hub drops the membership row. The other order would leave
someone able to reach a node that still serves them.
It is a membership, not an account. The user row is never written: their
other groups, their files and their pinned identity survive, because one
group's owner must not be able to erase someone from the hub. It is also
per group — a node hosting two loses them from one — and it does not take
back the key they already unwrapped, which is what rotating the GEK is
for. The confirmation and the panel both say so.
**Downloads and streaming through the disk, in both browsers.** The audit
this started as found two ways to put gigabytes in a tab.
Firefox and Safari have no File System Access API, so every download
there was collected in memory. A service worker fixes it: the page keeps
the writable half of a transferred stream, the worker answers a made-up
URL with the readable half and a Content-Disposition header, and the
browser writes it to disk as it arrives, with real backpressure. The
worker caches nothing and falls through on every request that is not one
of these downloads. A zip announces no Content-Length, since the archive
is larger than the files in it and a length we miss truncates the file.
Video was worse and affected both browsers. The node pushed ffmpeg's
whole output as fast as it was produced while the player consumed a
segment at a time, so the queue held the film — and appending all of it
hit the SourceBuffer's cap, where the handler logged the error and
dropped the segment, leaving a hole in the middle of the film with
nothing to show for it. Streaming is credit-based now, 24 segments of
256 KB in flight, verified against the live node: three credits, three
segments, then silence until more are granted. The player evicts what is
more than a minute behind the playhead and retries a refused segment
rather than dropping it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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of it
Two bugs in what shipped last, and both were mine.
Automatic mode still opened Save As, because with no folder granted the
code fell through to the file picker — while the documentation said it
would use the browser's own download folder. It does that now. Over
512 MB it still asks, since getting there means holding the file in
memory and a tab will not survive a 40 GB blob; Settings is where to stop
it asking again.
Selecting two files downloaded one. They were started without awaiting,
so each asked the browser for a save dialog at once, and a browser allows
exactly one — the rest were rejected and the errors went nowhere. They
are awaited one at a time now, which serializes the dialogs and not the
transfers: each call returns as soon as its transfer is registered.
Then the adjustments. The transfers widget offers Open on a finished
download that went into a granted folder — the bytes go to a new tab, and
that is the whole of what a page can do: no browser lets one start a
desktop application or show a file manager, so the folder half of that
request cannot be built and the guide says so.
The Files toolbar was four controls of three different heights in a row.
It is three groups now — what you can add, where you are, what you can do
with what is here — on one baseline, with icons from the set and a gap
between the dots and the word Actions. Chat comes first among the tabs
and is the one you land on. The three Discover entries in the sidebar
have icons. And a link in a chat message becomes a link: built as an
element and never as markup, http and https only, so `javascript:` is not
one message away from running here.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Downloading a selection of twenty files meant twenty Save As dialogs,
which is the wrong answer for the feature that had just been built.
Settings → Downloads now offers saving automatically, and that is the
default; asking every time stays available for people who want it.
The correction worth recording: a web page cannot be given a filesystem
path and cannot read one either. There is no ~/Downloads to configure and
nothing to type, on any operating system — which is also why none of this
will need changing on Windows. What a browser grants is a handle to a
folder the user picked in a dialog, so that is what the setting keeps:
picked once, stored in IndexedDB, re-confirmed once a session because the
grant comes back as a claim rather than a permission. Where no folder has
been granted, and in Firefox and Safari where none can be, files go to
the browser's own download folder — which on most machines is the folder
that was meant all along.
Automatic saving has one risk a dialog does not: it can silently replace
a file. It does not — a taken name gets a suffix before the extension,
`clip (2).mp4`, so a download folder does not fill up with files the
system no longer recognises. That, and the default, are what
test_downloads.py pins.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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