309ffaa4ab
PRD 0020 chunk 2. Pressing `n` opens a modal that lists every
agent from the manifest with `(N running)` suffixes for ones
that already have bottles up. Type to filter (substring,
case-insensitive); j/k or arrows to navigate; Enter to confirm;
Esc clears the filter on first press, exits the picker on the
second.
On confirmation, the dashboard runs:
- `prepare_with_preflight` from chunk 1 with curses-modal
render + prompt callables (the preflight modal centers the
plan summary + captures [y/N]).
- `backend.launch(plan).__enter__()` — enters but doesn't bind
the context to a `with`. The (cm, bottle, identity) tuple
lands in the main loop's `bottles` dict keyed by slug.
- `curses.endwin()` → `attach_claude(bottle)` → `stdscr.refresh()`
handoff. The agent's claude session takes over the terminal;
on exit the dashboard re-renders with the bottle now visible
in the agents pane.
Crucially the context manager is held alive in `bottles` — never
`__exit__`'d at quit. Chunk 4 will wire `x` to that exit; for
now bottles started from the dashboard stay running until
explicit cleanup. Matches the PRD's "q does not tear down"
decision.
Footer surfaces `[n] new agent`. 461 unit tests pass (8 new for
`_filter_agents` and `_running_counts`).