- New `net` full-screen layout (`screen_net.cpp`, `screen_idx = 5`): three
columns (module menu / signal filter + menu / live BFS result). Bare
`net` opens the screen; `net <m> <s>` keeps the inline path.
- Main screen grows a title bar: " essim — system digital twin "
(bold + dim) on the left, live "N module(s), M connection(s)" on
the right.
- Every interactive screen now renders the same breadcrumb at the top:
" essim → <name> — <short description> ", followed by a separator.
- `tui_helpers.hpp` exports `FocusLabel(elem, focused)`. Every
interactive screen wraps its field labels with it so the active
field's label flips to inverted video. Buttons (Connect, Apply)
invert as a whole.
- `CommandSpec` gains a `bool interactive`. `help` (no args) splits
the listing into "Interactive (open a full-screen mode)" and
"Other". `help <name>` tags interactive entries with [interactive]
and explains the bare-vs-inline duality.
- `DESIGN.md` (renamed from `CLAUDE.md`): refreshed Layout, TUI, and
screen-recipe sections to cover the new field, the title idiom,
FocusLabel, the `net` screen, and the event-paced `Computing…`
modal during `source`.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
