Session::execute and interactive input already ran under catch_unwind;
the machine factory, begin (the first step of Session::start), prompt and
preview (called by the UI every frame) did not, so a panic there took
down the app. Session::start now wraps each machine in guard::Guarded,
which runs all of its steps under catch_unwind. A panic in the factory,
begin or input ends the command with an internal error and the session
restores the drawing, as for input. prompt and preview can't end the
command, so they fall back to an "Internal error" prompt and no preview,
and the next input ends the command the same way. AGENTS.md/CLAUDE.md
name the wider guard.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Progress docs per craftrules standards/progress-docs.md: target-app parity, gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and feature, format, geometry, hardware, UI and localization parity docs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Annotation (M4):
- TrueType text from system fonts (filled/outlined), shared placement for all text
- MTEXT formatting codes: fonts, heights, colours, under/overline, stacks, wrapping
- Full DIMSTYLE variables, per-dimension overrides, all arrowheads and ticks,
unit formats, tolerances, limits, alternate units, colours by role
- Associative dimensions that follow geometry; DIMREASSOCIATE/DIMDISASSOCIATE
- STYLE/DIMSTYLE management commands, DIMTEDIT, DIMSPACE, TABLE create/edit/merge
Parametric (M9):
- New cadcraft-constraints crate: weighted damped Gauss-Newton solver, conflict
and redundancy detection, expressions, AutoConstrain inference
- All GC*/DC* commands, GEOMCONSTRAINT/DIMCONSTRAINT, PARAMETERS, DELCONSTRAINT,
constraint bar / display settings; re-solve after every edit
Also: MODEL/PAPER status bar toggle, cargo xtask alias, roadmap update
(233/491 menu items, 290 commands).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
