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docs(design): cross-process teardown for the embedded native-app stack (SEA-1880) #230

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docs(design): cross-process teardown for the embedded native-app stac…
seal-agent Aug 7, 2026
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docs(design): fold PR #230 review nits — teardown-order wording + zom…
seal-agent Aug 7, 2026
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1 change: 1 addition & 0 deletions docs/designs/product/DECISIONS.md
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Expand Up @@ -205,6 +205,7 @@ check enforces the mechanical half. Full rationale:
| DL-110 | The Compass native shell is Wails v3 (Go), its module under `go/` (`go/cmd/compass-app`) importing `go/internal/stack` and the bridge pump directly; re-decides DL-044's framework on the Go stack (Wails, not Tauri) | Active (Matt, 2026-08-02) | [native app §OQ1](compass-native-app/design.md#oq1--shell-framework-tauri-rust-vs-wails-go-vs-other--blocks-t3) |
| DL-111 | A new `compass.v1` `WhoAmI` RPC returns the caller's account id from its own credential (embedded: socket ambient-admin; native-client: bearer subject), retiring the parked `caller_account_id` seam and the connect-screen caller-id field | Active (Matt, 2026-08-02) | [native app §OQ7](compass-native-app/design.md#oq7--embedded-caller-identity-mechanism--blocks-t4-cross-lane-compass-server) |
| DL-112 | The `compass-agent` image is published to GHCR and `podman pull`ed by `compass-stack` at first run (not bundled in the app), making a GHCR publish lane for `compass-agent` a native-app packaging dependency | Active (Matt, 2026-08-02) | [native app §OQ6](compass-native-app/design.md#oq6--agent-image-distribution-for-embedded-mode--blocks-t4-reshapes-t6) |
| DL-161 | Cross-process embedded-stack teardown: `up` persists each supervised child's process-group ID plus a start-time identity token to an atomic `stack.pgids` record beside the lockfile; a fresh `down` refuses while an `up` holds the lock, then reads the record, verifies each group's identity before signaling, SIGTERMs each exact persisted pgid in reverse start order with bounded SIGKILL escalation, and confirms teardown per component (server/postgres socket quiescence, runner group-ESRCH) — scoped to the three supervised stack children (postgres, compass-server, compass-runner); live agent containers escape the process group via conmon double-fork and are OUT of scope (SEA-1884). Refines DL-108 (which stays Active) and realizes the frozen record's `down`-SIGTERMs-the-tree claim for the supervised children | Active (Matt, 2026-08-05) | [cross-process teardown §Approach](compass-stack-cross-process-teardown/design.md#approach--option-a-persist-child-pgids-at-up-down-signals-the-persisted-groups) |

## Agent batteries

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