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feat(agent-setup): report agent launch from the wrapper so terminals bind at boot - #7010
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…bind at boot Codex defers its native SessionStart hook until the first turn (an idle or resumed TUI fires nothing) and vibe has no session hooks at all, so a freshly launched pane could sit with no terminalAgentBindings row — and no binding-gated controls — until the first Stop or attach. Every harness shares one launch-time signal: the Superset wrapper. It now emits a synthetic SessionStart through notify.sh, delayed 2s and gated on the agent process still being alive so --help/--version probes and fast exits never bind a pane. Host-side, an Attached event for the same agent session no longer downgrades an active Start/PermissionRequest state, since the delayed report can land after the first prompt. Verified in the dev app over CDP: launching codex in a terminal produced a codex/Attached binding 2.5s after launch (while codex was still at its trust prompt), the pane tab swapped to the Codex icon, and /quit ended the binding as detached. Claude-Session: https://claude.ai/code/session_01HR6rXRzQM6p8epeyer3XqG
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Included review availability: Your plan provides up to 10 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe wrapper marker changes to v4 and adds conditional, delayed launch reporting. ChangesAgent launch state
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to The PR reports agent launches earlier so terminal controls become available at boot and protects active lifecycle states from delayed reports; no actionable merge-blocking risk remains beyond normal checks and review. Sequence Diagram(s)sequenceDiagram
participant GeneratedWrapper
participant ManagedNotifyHook
participant TerminalAgentStore
GeneratedWrapper->>ManagedNotifyHook: Delayed SessionStart payload
ManagedNotifyHook->>TerminalAgentStore: Attached event
TerminalAgentStore->>TerminalAgentStore: Preserve or replace binding state by session
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Inline comments:
In `@packages/host-service/src/terminal-agents/store.ts`:
- Around line 157-158: Update the unchanged-session Attached-event handling
around prior.lastEventType so it preserves every existing lifecycle state,
including Stop and Failed, instead of allowing delayed Attached events to
overwrite them; retain the current behavior for session changes and other event
types.
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packages/agent-setup/src/agent-wrappers-common.tspackages/agent-setup/src/agent-wrappers-launch-report.test.tspackages/agent-setup/src/agent-wrappers.test.tspackages/host-service/src/terminal-agents/store.test.tspackages/host-service/src/terminal-agents/store.ts
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A delayed wrapper launch report landing after a fast turn's Stop (or a Failed) would overwrite it, erasing the row's resume-candidate status or hiding the failure. Attached now never rewrites lastEventType for an unchanged session; it only refreshes lastEventAt. Claude-Session: https://claude.ai/code/session_01HR6rXRzQM6p8epeyer3XqG
Problem
A freshly launched agent pane can sit with no
terminalAgentBindingsrow — and therefore none of the binding-gated pane controls — until its first Stop or an attach. Worst right after a session handoff: the new pane is exactly the one a user wants to chain from.Root cause (proven empirically, not delivery): Codex 0.150.1 creates its session rollout lazily, so the native
SessionStarthook registered in~/.codex/hooks.jsonfires only with the first turn. An idle Codex TUI booted for 10s with--enable hooks --dangerously-bypass-hook-trustfires nothing;codex resumefires nothing at launch either. Vibe has no session hooks at all (its hooks.toml supports onlybefore_tool/post_agent_turn). Every hook POST that did fire got a 200 — the gap is upstream of the wire.Fix
buildWrapperScript, all 12 agent wrappers, marker v3→v4): a backgrounded subshell waits 2s, checks the agent process is still alive (kill -0on the pid that survivesexec), then fires{"hook_event_name":"SessionStart"}through notify.sh. Skips--help/-h/--version/-V/-v(before--) and runs only inside Superset terminals, so version probes and fast exits never bind a pane. Server-side, SessionStart→Attachedalready creates the binding; harnesses with working native SessionStart still fire it and attach the real session id via upsert.Attachedfor the same agent session no longer downgrades an activeStart/PermissionRequest— the delayed report must not flip a working agent to idle.Per-harness: all 12 wrapper harnesses (claude, amp, codex, gemini, mastracode, opencode, copilot, vibe, kimi, grok, cursor-agent, droid) now report at launch via the wrapper; omp/pi have no wrappers but their extensions already fire
session_startat session boot. Known limits: long-running non-session subcommands (claude mcp add,codex login) bind until they exit; direct-binary launches that bypass the wrapper rely on native hooks only.Verification
packages/agent-setup: 268/268 + tsc clean.packages/host-service: 1407/1407 + typecheck clean.codexin a dev-app terminal produced acodex | Attachedbinding 2.5s after Enter, while Codex was still at its trust prompt (no session, no native hook possible); the pane tab swapped to the Codex icon (the binding-gated UI on main);/quitended the binding asdetached.https://claude.ai/code/session_01HR6rXRzQM6p8epeyer3XqG
Summary by cubic
Agent terminals now get their agent binding at boot instead of waiting for the harness's first native hook, which Codex defers until the first turn and vibe never fires at launch.
--help/--versionprobes and fast exits never bind a pane.Attachedevent no longer rewrites any same-session lifecycle state — Start, PermissionRequest, Stop, or Failed — and only refresheslastEventAt, so a late launch report can't hide a failure or erase a resume candidate.claude mcp add,codex login) bind until they exit, and direct-binary launches that bypass the wrapper rely on native hooks only.Written for commit abb242f. Summary will update on new commits.
Summary by CodeRabbit
New Features
Bug Fixes