A `terminal(background=true, heartbeat=N)` tick queued a notification every N seconds
whether or not the process had printed anything, and every queued event costs the owning
session a full model turn. On Desktop and the TUI that turn painted the wake as a user
bubble ("[Background process ... heartbeat #9 ... (no new output since the last
heartbeat)]") followed by the model's "Still running normally." — over and over, for a
process whose row on the status stack already said it was running — and while the wake
held the session's turn, the user's own prompt sat queued behind it.
- `ProcessRegistry._emit_heartbeat` skips a tick with no new output. The sequence counts
delivered beats only; the "(no new output)" placeholder in the formatter is gone.
- TUI/Desktop type heartbeat rows `display_kind: hidden` (the kind both clients and the
transcript preview already honour); the CLI paints a one-line receipt and persists the
row hidden, so reopening the session in Desktop shows only the agent's reply.
- Desktop hydration drops heartbeat rows persisted by older backends the same way.
- `display.background_process_notifications: off` is honored by the TUI/Desktop poller and
the CLI drain, not just the messaging gateway. `off` mutes process-driven wakes only:
a finished `delegate_task(background=true)` still lands.
Supersedes #123123 (cherry-picked; scoped so `off` keeps subagent results) and #119202
(cherry-picked; `heartbeat: 0` is schema-valid so models that materialize every field
stop tripping the foreground guard).
The documented `off` mode gated only the gateway's completion injection
(#9290); the CLI drain never consulted the key, so setting it silently did
nothing on the CLI — leaving no escape hatch against the post-Ctrl+C
notification turn restarts (#123114).
Mirror the gateway semantics: the drain still claims and acknowledges
completion events (durable rows converge instead of replaying on restart),
but the turn-starting `_pending_input` injection is suppressed.
Fixes#123114
(cherry picked from commit d009992c9e64b6083951b27a8261d138ae669ccb)
Squash of the 54 commits on victor-kyriazakos:feat/user-channel-warning-suppression
(PR #112302, head f45c640e55) so the contributor's authorship survives a rebase-merge;
the commits interleave with a cron delivery-ledger rework that the salvage removes in
follow-up commits, so per-commit cherry-picks were not practical.
Adds display.suppress_warning_notifications (global + per-platform, default false):
one resolver (gateway/warning_notifications.py), BasePlatformAdapter.emit_warning /
emit_media_warning / warning_text, a notification_category classification carried
through wakes, queues and persistence, and render/present boundaries for CLI/TUI.
Subagent completions already got this: the model receives the full
`[ASYNC DELEGATION …]` text while the CLI/TUI/Desktop paint a one-line
"Subagent Task Completed: <goal>" event. Background-process completions
(`terminal(background=True, notify=True)`) still echoed the entire
`[IMPORTANT: Background process proc_… completed normally (exit code 0).
Command: … Output: …]` block as if the user had typed it.
Generalise the delegation mechanism: `TimelineNotification` (formerly
`SubagentNotification`) carries `display_kind` + `display_text`;
`ProcessNotificationBatch` renders a `process_complete` one with a
`process_completion_display_text` title ("Background Process Finished:
<cmd>", "Background Process Failed (exit 1): <cmd>", "N Background
Processes Finished"). The TUI gateway stamps the same kind/metadata on
the synthesized turn and emits the title on `status.update`; Ink and
Desktop project `process_complete` rows as timeline events (Desktop keeps
the raw output behind the existing expandable async-result row). Model
content is byte-identical to before.
Based on the earliest batching proposal by BrunoBza (#104686) and JoaoMarcos44 structured correction (#104703). Slim redo into topical siblings and shared TUI poller/post-turn routing. Reported by Xipong (#104671). Local shell-to-loopback probes demonstrate 12 to 1 turn dispatches; suites await the campaign test lock.
Co-authored-by: joaomarcos <joaomarcosdias444@gmail.com>
