The locker was not running at all. workout-locker.service crash-looped ~1977
times in a single boot with ModuleNotFoundError while remaining `enabled`, and
has no successful start in the retained journal. A locker that cannot start is
a locker that does not lock.
Root cause: commit 9b420a9 removed the unit's WorkingDirectory and
PYTHONPATH=/opt/screen-locker on the (correct in principle) grounds that
"screen_locker is now pip-installed" -- but nothing guaranteed that install.
There was no installer, /opt/screen-locker no longer exists, and the package
was absent from every Python version's user site-packages. The unit lost its
fallback and gained a hard dependency on a manual step nobody re-ran.
install.sh fixes that as a script rather than a reminder, and *gates*: it fails
if the production interpreter cannot import screen_locker, because an installer
that reports success while the service still cannot start is precisely the
failure above. It also re-asserts an editable gatelock from ~/utils AFTER the
package install and verifies it resolves there -- pyproject pins gatelock to a
git tag, so a plain install silently replaces a local editable gatelock with a
frozen wheel, which was observed removing ScrollableSurface and taking
diet_guard down with it.
The keyboard work, all of it Tk defaults rather than local mistakes:
- Focus was invisible. Tk ships highlightcolor="#000000" -- a black ring on
#211D1B -- and relief="flat" removes the depth cue too, so a keyboard user
had no indication of where they were. Now set in the _ui_widgets factory, so
a new call site cannot omit it.
- Enter did nothing. X11 Tk binds <space> on Button and never <Return>.
- tk.Text trapped Tab (inserts a literal tab, refocuses itself) and no-opped
Shift-Tab; the only exits are the undocumented Ctrl+Tab / Ctrl+Shift+Tab.
- The lock and retry screens started with NOTHING focused. on_focus_ready was
a documented no-op arguing "buttons only, nothing to focus" -- exactly
backwards: buttons are what needs focusing when there is no other window on
screen and a global grab is held.
- The heat-skip modal grabbed input fullscreen with no focus, no ring, no
Return and no Escape. It now focuses the *declining* option, so a blind
Return keeps the workout rather than silently skipping it.
The manual-workout form's scroll viewport was pointer-only in three ways at
once: tk.Canvas has no class key bindings, so ::tk::FocusOK rejected it as a
focus stop; nothing bound wheel, PageUp/PageDown or arrows, leaving only a
draggable thumb; and canvas clipping does not unmap children, so below-the-fold
fields stayed in the tab ring while Tk never scrolled to follow focus -- Tab led
to fields the user could neither see nor reveal. Its height was also a magic
0.7*toplevel above ~230-290px of fixed chrome, i.e. satisfied at 1080p and
violated at 768p, where SUBMIT/BACK were pushed off the bottom.
All of that is gone by deletion: the surface container is now a
gatelock.ScrollableSurface, so the inner viewport is redundant. build_surface
and _ensure_container both use it, which fixes the same symmetric-clipping
problem for EVERY screen rather than one at a time; center_when_fits keeps
short screens looking exactly as they did.
Re-arming after a repaint hooks into clear_container(), which all ~19 repaint
sites already call. "Remember to call settle after painting" is a rule that
would eventually be missed, and on a lock a missed re-arm means unreachable
content.
The aux windows hardcoded geometry("600x400") and ("700x450") while displaying
more than that -- the relaxed-day prompt's own button row requests 862px inside
a 700px window, sheared at both edges. That pre-dates this work by a wide
margin (Tk's default focus ring accounts for 4px of the 162px overflow). They
now size to content, floored at the old values and clamped to the display.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Krzysztof Rudnicki
3e77f4e232