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There is no `uploads/` subdirectory any more, and the client names the folder
rather than the root.
It was the last of v5's quarantine — the per-user layer went on 2026-08-14 for
the same reason — and it goes on the same grounds: a folder appearing beside
the operator's library because somebody sent a file is the node deciding how
their disk is arranged. Somebody dropping a file into the folder they are
looking at expects it to be in that folder.
**What made the quarantine worth having was never the subdirectory.** It is the
filename allowlist, the size cap, the chunk ordering and the no-overwrite rule,
and all four are untouched: an existing file is never replaced, the second
sender of IMG_1234.jpg gets a free name, and the check still sits at the write.
Letting the client choose the destination is safe for one reason and only one:
it is resolved through `RootSet.resolve()`, which refuses `..`, absolute
segments and anything whose resolved form escapes its root, symlinks included.
A member answers "which of this group's folders", never "which path on the
operator's disk" — and the test that used to assert the node chose now asserts
that, with six shapes of escape.
`direct` goes with it. Its only job was to say "no subdirectory for this root",
which is now every root, and a config flag that does nothing is worse than none.
Chat's attachment folder finally does something: the directory the operator
picks in the Chat settings pane is where attachments are written, falling back
to the first writable root while they have not chosen one, or if the one they
chose has since been made read-only or ejected — a stale choice should not
become a refusal at send time.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011pvMdvLBG92jyhvD5pD6us
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Review of the Phase 1 commit found the RO/RW model sound but three paths
unfinished, each of which broke the flow the phase exists to deliver. Plus
29 test failures it introduced and no coverage for anything it added.
Uploads went to the wrong directory. The node read a `root` field on
file_upload that no client ever sent, so every upload landed in the first
writable root while the Files toolbar offered its button based on the root
being browsed — with two writable roots, uploading from one wrote into the
other. Files now names the root it is showing; Chat names one chosen in the
shell (an operator-configured directory arrives in Phase 2); the node refuses
an unknown name rather than falling back, and refuses read-only and ejected
roots by code.
Shared directories were unreachable on the web. The table read its roots
only from the loopback API, which resolves to "not available" in a browser,
so the section rendered for nobody there — while the Uploads controls it
replaced had worked — and the transport.updateRoot/ejectRoot/plugRoot methods
beside it were dead. MNP is now the path, loopback the fallback for a local
node with no live connection, and adding a root over MNP takes a typed path
since no web page can browse a remote disk.
Ejecting updated nobody's screen. transport.js resolves an admin ack against
the pending request and returns, which is right for every op whose caller
knows the value it chose; the root acks carry state only the node can compute,
so the operator who clicked Eject was the one client that never saw it happen.
And the ejected flag reached roster.db but was never read back, so a restart
undid it and the next scan read an empty mount point as an erased library.
Also: the member-upload endpoint answered 200 and did nothing (removed); the
wizard ignored the first root's RW switch; reload compared roots on name and
path, so editing writable in node.toml did nothing; the table had no path
column, which is the only thing separating two libraries sharing a basename;
apps_enabled normalisation differed between the two sides of a signed subject.
Tests: eject/plug, per-root upload refusal and the node.toml rewrite had no
coverage at all. test_member_upload_policy.py is replaced by
test_root_writable_policy.py — it tested a removed feature — and every
property worth keeping from it moved rather than being dropped.
Docs: draft-v6 structural decision 9 is annotated as superseded (the operator
can no longer have a directory only they may write to — a real capability
removed, flagged rather than hidden), the man page documents the root verb and
the RO/RW fields, and refactor-groups.md §7b records what the plan got wrong.
Suite: 41 failures before, 13 after — all 13 pre-existing on main.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011pvMdvLBG92jyhvD5pD6us
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The chat could not be read back: any wheel gesture was undone in the frame
it happened in, and the "jump to latest" button never appeared.
None of the pins in ChatPanel are at fault -- every one of them is guarded
by "only if the reader is at the bottom". The reader never got to stop
being at the bottom.
fit() set the panel's height, read documentElement.scrollHeight back and
subtracted the overflow, so the document alternately did and did not
overflow the window. The page scrollbar appeared and vanished with it and
visualViewport fired resize at every pass -- the event fit() is bound to.
It therefore re-entered itself for the life of the panel: measured at 240
firings in two seconds on a page nobody was touching, against 2 for a bare
document. Each pass ran fitAndPin, which re-pinned the list to the bottom
before the scroll event that would have recorded the gesture was delivered
a frame later, so atBottomRef never went false.
- fit() learns the space below the panel once and remembers it on the
element instead of re-deriving it by writing and measuring back. At the
steady state it writes nothing, so it produces no resize. A real window
resize or an orientation change forgets the learnt value and measures
again (the page under the panel may have reflowed); visualViewport
deliberately does not, since a phone fires it constantly.
- The scroll-to-bottom is now scoped to *arrival*, which is all it was ever
for: opening the group, or coming back to the Chat tab, including the
thumbnails and link-preview cards that keep growing the list for a second
afterwards. It ends when the reader takes hold of the scroll, and the
ResizeObserver disconnects there.
- That release is recorded from the gesture (wheel/touchmove/pointerdown/
keydown), not from the scroll event, which arrives too late to protect
anything.
Unchanged: landing on the newest message, following new messages while
already at the bottom, the "load older" anchor and the unread marker.
tests/harness/chat_scroll_probe.py mounts the real ChatPanel in a browser
and reads a conversation back; test_chat_scroll_up.py asserts against it.
With the fix reverted, five of its six tests fail and the sixth -- landing
on the newest message -- still passes, which is the property that must not
have been traded away. A structural test cannot see any of this, which is
why it is measured.
test_layout_responsive.py pinned the listener's name and follows the
rename.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W8oRqEHhnKUr1NfmTVdcyL
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spinner
Three regressions fixed in ChatPanel:
- Scroll pinning: layout effect now depends on [messages, hasMore] so the
"load older" button appearance triggers a re-pin; setHasMore is called
before setMessages to avoid an intermediate render without the button;
fit() is wrapped in fitAndPin() so panel resizing re-pins the scroll.
- Message loading on group switch: fetch effect depends on the status prop
instead of transportRef.current?.connected to avoid racing with
GroupPage's cleanup; loadedRef resets on fetch failure so a retry works.
- Connecting spinner restored in the Chat tab empty state.
Adds structural regression tests (test_chat_scroll_bottom.py) that lock
the dependency arrays and setState ordering so these invariants break
loudly in CI.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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ChatPanel remounts on every tab switch, so a mount effect is the tab-entry
hook. `focus({ preventScroll: true })` so it does not fight the panel-sizing
and scroll-to-bottom effects still settling, and so a phone opens the
keyboard without the view jumping.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018gKJ85aZyvEwarXMFzFEwi
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Paste an http(s) link in a group's chat and it unfurls into an OpenGraph
card — title, description, site name, and image — the way WhatsApp/Signal/
Slack do it.
The fetch is the node's, never the browser's or the hub's. The browser
cannot: a strict img-src/connect-src and CORS block it, and a direct fetch
would leak every reader's IP to the linked host on each render. The hub must
not touch group content (draft-v6 §2.5). The node already fetches third-party
metadata for the Videos and Music apps, over the same authorised path.
Flow mirrors media_meta_req: the client sends `link_preview_req {url}`, the
node replies `link_preview_resp` with the card fields (or `ok: false`), and
any OG image is stored under its blake3 in the existing media_cache thumb
store — the client then fetches it via the normal file_req path, exactly like
a poster. Nothing durable is added: the card text lives in a bounded in-memory
TTL cache on the node (draft-v6 §2.7 — enrichment on demand, the asking device
caches), and MNP goes 0.11 → 0.12 (additive: an older node logs "unknown type"
and the client shows the bare link).
Because the URL is chosen by a *member* and triggers an outbound request from
the operator's machine, `linkpreview.safe_url` is an SSRF gate: http(s) only,
no credentials, and every resolved address must be globally routable — no
loopback, private, link-local, multicast or reserved range, cloud-metadata
included. Redirects are followed by hand so each hop is re-checked. Residual,
documented in the module: DNS rebinding between the check and connect, closed
properly by pinning the checked IP — a follow-up.
Also fixes a long-standing chat annoyance the preview cards made worse:
opening the Chat tab landed a screen or two above the newest message because
the scroll-to-bottom ran before attachment thumbnails and (now) preview cards
had loaded and grown the content. A ResizeObserver keeps the view pinned to
the bottom through late content growth, and does nothing once the reader
scrolls up.
Tests: test_linkpreview.py (the SSRF gate and the OpenGraph parse, incl.
redirect re-validation and image downscaling) and test_link_preview_request.py
(reply shape, the media_cache image round-trip, the result cache).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018gKJ85aZyvEwarXMFzFEwi
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GroupPage's 6620-line app.js carried Chat and Files wedged in directly, with
no way to add another group-level app without touching the shell itself. It
is now app.js (routing, non-group pages) plus nine focused files — apps.js
(the registry), chat-app.js, files-app.js, video-player.js, group-page.js
(the shell), group-settings.js, hub-client.js, icon.js and file-utils.js —
with docs/apps.md as the checklist for adding one (Videos/Music/Photos are
sketched there, not built).
Node side gained the matching enablement mechanism, mirroring
member_upload exactly: a roster setting, a signed apps_enabled op enforced
by _has_admin_authority, exposed in the handshake ack. Operators toggle
applications per group from Settings, which also gained a small reorder:
Invite, Pairing, Applications, Shared directories, Uploads, danger zone,
Your devices, Members.
Two bugs surfaced during the split, both missing an import across the new
file boundary and invisible to node --check or a module-load probe since
they only throw when the code path actually runs:
- group-page.js called onRefreshAuth on a stale-token handshake rejection,
but app.js never imported refreshAccessToken from hub-client.js — so a
brand new member (including a group's own creator) hit "Not a member of
this group" and the retry silently failed, throwing before it could
refresh the token.
- chat-app.js called getLocale() for message timestamps without importing
it from i18n.js. Opening Chat on a group with real messages threw mid-
render; uncaught, that appears to wedge Preact's render scheduler, so
every button on the page stopped responding until reload.
Caught the second class of bug with a proper no-undef audit across all
split files (a temporarily installed ESLint 9, since the system one is too
old to parse this codebase's syntax) rather than trusting grep. 827 tests
pass; 6 new ones cover the apps_enabled policy.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016SF6RKNBKg9qejmoMJ9ybA
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