Files
tty7/crates
l0ng-ai b6c0d2636a fix(cli): make tty7 wait edge-aware and liveness-aware
Three holes in the wait primitive, all of which make a delegation loop
answer with something other than what it asked for.

The agent status the server keeps is a level, not an event: `done` stands
until the next turn begins, `waiting` until the agent moves again. A wait
issued right after a `send` therefore returned last turn's state before
the worker had even read the input, and a second task in the same pane
matched `--until done` instantly. `--changed` snapshots the position the
wait arrived at — status plus the activity counter, which ticks even when
the status letter does not — and refuses to match it; the JSON carries
`stale` so a plain wait can tell whether the answer might be a leftover.

`exit` was unreachable for any pane that had ever had an agent: the
snapshot has no liveness in it, and the daemon keeps a dead pane
registered until it is closed. A worker that crashed mid-turn reported
`working` until the timeout. Liveness is now re-checked from the tree
every few polls; the fast path where the first poll already answers still
costs exactly one request.

The "pane exited before reaching the awaited state" branch built its JSON
and then threw it away on an anyhow error, leaving `--json` with nothing
to read and the exit indistinguishable from an unreachable daemon. It now
exits 1 with its report.

Also: the wire spelling of a state is written out instead of derived from
the variant name, the sleep no longer overshoots a near deadline, an
absurd `--timeout` cannot overflow, and `--interval` is range-checked at
parse time rather than silently clamped.
2026-08-02 09:49:47 +08:00
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