Replace the single fixed 300ms capture-pane delay in `agent send --verify` with a
bounded polling loop. After sending, the loop polls `capture-pane` every 400ms
(VERIFY_POLL_INTERVAL_MS) up to a configurable total timeout (default 6000ms,
VERIFY_DEFAULT_TIMEOUT_MS). classifySendResult is called on each poll: accepted/draft
return immediately; unverifiable keeps polling until timeout, then fails closed with
the existing "no pane change after send" message.
New `--verify-timeout <ms>` option on `agent send` (default 6000ms documented).
Injectable SleepFn added to FleetCommandDeps for test isolation — no real sleeps in
tests. Exports VERIFY_POLL_INTERVAL_MS and VERIFY_DEFAULT_TIMEOUT_MS as constants.
classifySendResult and all other pure functions remain unchanged.
Tests: multi-poll acceptance on 2nd/3rd poll => exit 0; pane unchanged until timeout
=> exit 1; draft detected on first poll => exit 1. All 386 tests pass.
docs/fleet/PRD.md Known-limitations updated: verify now polls up to bounded timeout
(default ~6s, --verify-timeout); definitive acceptance still deferred to Phase-3
heartbeat-ack.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RMoEx7hfdFGjUiCHuN1RRi
Blocker fix: send --verify now captures a BEFORE snapshot immediately
before the send and an AFTER snapshot after the delay, then uses
classifySendResult(before, after) to classify. A wedged pane showing
stale non-empty content is no longer falsely reported as 'accepted' —
BEFORE==AFTER maps to 'unverifiable' (exit 1, "no pane change after
send"). Blank AFTER still fails closed as 'unverifiable'. Only
AFTER != BEFORE without a draft suffix counts as 'accepted' (exit 0).
Should-fix: agent watch now uses a GROUPED VIEWER SESSION instead of a
bare 'tmux attach -r' against the agent session. A bare attach lets the
viewer terminal shrink the agent's window; a grouped session has
independent sizing so the agent's window is never affected.
Sequence: new-session -d -t '=<agent>' -s '<agent>-watch-<pid>' (runner),
attach -r to viewer session (interactiveRunner), kill-session on detach
(runner). New builder functions exported: buildAgentWatchCreateViewerCommand,
buildAgentWatchAttachCommand, buildAgentWatchKillViewerCommand,
buildViewerSessionName. buildAgentWatchCommand kept but deprecated.
New exports: classifySendResult(before, after) — the testable classifier.
Tests added:
- classifySendResult unit suite (6 cases): accepted/draft/unverifiable/
stale-pane/both-blank/before-blank-after-response
- send --verify regression: stale (before==after non-empty) => exit 1
- send --verify regression: blank AFTER => exit 1
- send --verify regression: draft after pane change => exit 1
- send --verify regression: changed non-draft => exit 0
- send --verify: 3-call sequence assertion (before-capture, send, after-capture)
- watch dispatch: grouped viewer session created/attached/killed; no bare
attach against agent session; viewer name matches <agent>-watch-<pid>
PRD Known-limitations updated: pane-change check rationale, Phase-3
heartbeat-ack requirement, grouped-session watch design.
All gates pass: pnpm typecheck, pnpm lint, pnpm --filter @mosaicstack/mosaic test
(382 tests, 74 fleet), prettier --check.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RMoEx7hfdFGjUiCHuN1RRi
FR-1 fleet ps: joins systemd show (ActiveState/SubState/UnitFileState),
tmux list-panes (pid/command/dead/activity), and file-based heartbeat
(~/.config/mosaic/fleet/run/<name>.hb) into one table per roster agent.
Flags DRIFT (roster runtime ≠ actual pane command) and BOOT-ENABLE
(active but UnitFileState=disabled). --json output includes tenant_id
and host on every record (FR-6 zero-foreclosure for multi-tenant/host).
FR-3 agent watch: read-only tmux attach (-r flag) so the operator can
observe any session without injecting keystrokes or resizing the window.
Registered as a new verb alongside tail/send/reset in registerFleetAgentCommands.
FR-5 agent send --verify: after keystroke injection, captures the last 5
pane lines and checks for draft heuristic (last non-empty line starts
with '> '). Exits non-zero and writes to stderr if the message appears
unsubmitted. Default send behavior is unchanged when --verify is omitted.
New pure exported helpers (all unit-testable without real tmux/systemd):
buildSystemdShowCommand, buildTmuxListPanesCommand, buildAgentWatchCommand,
buildAgentVerifyAcceptedCommand, parseHeartbeat, parseSystemdShow,
parseTmuxListPanes, detectDrift, getDefaultTenantAndHost, isSendAccepted,
heartbeatPath. Added 31 new spec cases (62 total) covering exact command
construction, JSON shape, heartbeat parsing, drift detection, and verify flow.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RMoEx7hfdFGjUiCHuN1RRi
