User code no longer execs in the engine. A pool of persistent worker
subprocesses speaks one JSON object per line; the controller installs a
proxy as the node's function, so every execution path funnels through it
and the pipeline is untouched. A crash costs one subprocess, a per-node
timeout is a kill, and cancelling from the canvas is that same kill.
The workers run a venv of the user's own on the data volume, filled from
a pip manifest versioned beside the flows. Applying it retires the
workers and rebuilds, so a package lands without restarting the engine.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017MeiWk3Yq12n2pTvnQWYvt
Two backends that had no way in: secrets could only be set through the API,
and alerting could only be configured by hand-editing its file. Both are
engine-wide operator settings rather than personal ones, so they get sidebar
entries of their own instead of tabs under the per-user Settings — and the
missing-secret error now names the place the page actually is.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H7LwYgJfpkbLCTeiAf8U4A
Widgets bind to a message name and read it live off the socket the editor
already had — lifted out of the flow editor so a dashboard route gets the
same values, which also gives the home page live data for free.
The input widgets close the loop the other way: a slider publishes into
the graph and whatever consumes that message runs. Verified end to end in
the running app — moving a slider set a flow input, and the stat bound to
what the flow computed from it followed.
View mode is plain CSS grid. A wall panel that only displays should not
download the code that lets someone drag things around, and it now does
not. Editing is a widget picker, a per-widget width control and a
settings card fed by the message catalog.
No new dependencies: the slider is a range input, the gauge is an arc,
and the markdown is a five-line subset. Charts are the one widget still
missing — they need a charting library and the chart tokens the design
guidelines reserved — so they are stored and validated but not offered.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011LF61rxW1FG5YCD2J9YqjY
The footer was a user card with the theme picker and log out buried in
its dropdown. It is now two plain entries, Settings and Log Out, and the
theme moved into the settings page as its own tab.
The dark sidebar never matched the canvas because _canvas.tsx painted
bg-card across the whole viewport underneath it, so the floating
panel's bg-card/80 resolved to card over card and its gutter was card
too. Nothing there should paint a surface; the panel now reads the same
as the other frosted chrome.
The superuser guard sliced the first three tabs, which silently changed
meaning when a fourth arrived.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KkmeRiyeYmVZqJVwuyHq9o
An expired or orphaned session left the app on a half-rendered page instead of
the login screen: a properly signed token naming a user who no longer exists
answered 404, which the client does not treat as an authentication failure. All
failures in get_current_user are 401 now, and the client stops retrying them,
so a dead session goes straight back to the login screen.
- Clicking an edge names the two nodes it runs between, not just the message.
- A node with a problem shows one badge carrying the whole explanation, rather
than a corner badge and a status dot saying the same thing twice. The dot is
back to what it is good at: whether the node ran.
- The sidebar's collapse control sits in the sidebar, where a phone still finds
one in the chrome because there is no sidebar on screen to hold it.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016WzrvW7rjQbynnhF6pxh6i
- MQTT nodes failed to build: the topic map was renamed to talk in ports, but
__slots__ still declared the old name, so every MQTT node raised
AttributeError. Building one of each node type is now a test, since __slots__
makes this failure invisible until someone places the node.
- Port names offer the messages already in play: everything published is worth
reading, and an input nobody provides yet is worth publishing. A message only
connects when both ends spell it the same way, so choosing beats typing.
- Adding a port focuses its name field.
- Dragging onto an input that already reads something offers the extra port as
well as the replacement — an MQTT or InfluxDB node usually wants both.
- The template's Item model, its routes, screens and table are gone.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016WzrvW7rjQbynnhF6pxh6i
The browser half of M3. Flows open on a full-bleed canvas with their chrome
floating over it: flow tabs top, dock bottom, node settings in a panel on the
right that leaves the graph visible and running behind it.
- Connections are derived, not stored. A node declares the messages it reads
and publishes; every matching pair draws an edge, so two producers of one
message converge on their consumer. Dragging output to input is shorthand
for pointing that input at the producer's message, and asks before it
replaces an existing one.
- Values land on the edges as they flow, over a websocket that feeds a store
outside React, so a value arriving re-renders its own chip and nothing else.
Clicking an edge shows the last payload and when it arrived.
- Node source is edited in Monaco, loaded only when a panel opens and themed
from the design tokens.
- Edits autosave; identical documents are skipped server-side, so a quiet
canvas writes nothing.
- Validation from the API shows on the node it belongs to and is summarised in
the dock, where each entry pans to its node.
- Works on a phone: touch-connect, 44px dock targets, and the node panel
becomes a full-screen sheet.
Two new tokens (--status-success, --font-mono) are mirrored in the website repo
and recorded in DESIGN-GUIDELINES.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016WzrvW7rjQbynnhF6pxh6i
The submodule collapse was only half applied: .gitmodules was deleted but
backend/ and frontend/ were still recorded as gitlinks, so none of their
files were tracked. Replace the gitlinks with the real trees.
Also untrack .env (it carried placeholder secrets) in favour of a tracked
.env.example, drop the committed __pycache__, and narrow the blanket *.png
ignore that would have swallowed design assets.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
stroblmeandClaude Fable 5