Two things differ between machines and only one of them is width: a 4K panel
has more pixels, while a 125%/150% display has the same logical pixels holding
LESS, because every label and margin is taller. Breakpoints written as raw
pixels only hold on the machine they were tuned on.
* ui_scale() derives a factor from font height (1.0 at the 15px line the
layouts were measured against) and every narrow-guard threshold is
multiplied by it, so panes fold when the content is cramped rather than
when a number is crossed.
* The window takes a share of the available screen (80% × 85%) with the old
1180×760 as the floor, instead of opening at that size on any monitor.
* Moving the window to another screen re-pins the assistant and re-decides
the fold, since the new screen's work area and scaling may differ.
Found by tools/check_multi_screen.py, which walks 5 window sizes × 3 font
scales:
* At 150%, Schedule was clipped on 1280 and 1366 screens and the window's
own minimum grew to 1459px — wider than a 1280 laptop, so the app could
not fit at all. The cause was not the lanes: the one-line lane-count
summary in the header reported a sizeHint wide enough to set the minimum
width of the entire window. It now yields first (its text stays in the
tooltip); the window minimum drops 1459 → 752 and holds there at every
scale.
Also: these checkers exited 0xC0000409 from a Qt teardown crash AFTER printing
their verdict. check_probes_bite decides whether a probe caught its mutation by
reading exit codes, so a crash would have counted as "caught" — the round could
have passed while proving nothing. They now flush and os._exit with the real
verdict, and round 5 still catches all six mutations.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Implements the redesign from docs/ui-audit.html. Rearrangement only — no
feature was removed; every control that moved kept its handler, and the
gates that used to hide things now grey them out instead.
Navigation
* The rail is one flat list: the five Workspace sub-views sit at the top
level instead of behind an accordion, with Dashboard/Monitoring pinned
at the foot and Settings below them.
* Cowork and GraphRAG stay listed and greyed while no project is
selected, rather than vanishing and resizing the menu under the user.
* Monitoring keeps its eight sub-views in its own tab strip (unhidden)
instead of doubling the rail's length.
* _goto now moves the highlight itself, fixing a long-standing bug where
programmatic navigation left the rail pointing at the previous screen.
* Rail header gained the project picker and "New chat"; RECENTS lists the
active project's threads. Both are second views of existing state — the
Cowork toolbar button and the full History panel are untouched.
* Provider / language / theme moved from the top bar to an account row at
the foot of the rail (same widgets, same signals).
Screens
* Co4E: the flow tab strip is gone (per the design); Flow Status became a
toolbar toggle with its own way back, and the three icon-only tabs became
four labelled, foldable sections in one column. One flow open at a time
is the one capability this costs; background runs are unaffected.
* Dashboard: header split into two rows; cost promoted to a hero card.
* Monitoring Overview: one scrolling column of titled sections; the model
price table got its own full-width section instead of sharing a row with
the CPU meters.
* Settings and Task editor gained a section index down the left.
* Help dock: 84x64 launcher + chevron became one 26px dot that expands to
a labelled pill on hover; "hide to the edge" moved into the panel's menu.
Layout
* The window's minimum width dropped from 1453px to 768px. The main cause
was a QTabWidget taking its minimum from the widest page even when that
page is hidden, so Co4E was forcing Project and Cowork wide.
* Secondary panes fold themselves on a narrow window and restore when it
grows, never overriding a fold the user made.
* The long dialogs no longer scroll sideways at any font size.
Verification: tools/check_*.py build a real MainWindow offscreen against a
copy of ~/.cowork_local with the schedulers no-oped. check_design_parity.py
reads its checklist straight from the audit page's own proposals.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
