feat(k1): wire canonical control session to UI

2026-07-18 17:53:55 +03:00 · 2026-07-18 17:53:55 +03:00 · 7b7b5d6cad
parent 36f0c93d2a
commit 7b7b5d6cad
24 changed files with 1591 additions and 184 deletions
--- a/README.md
+++ b/README.md
@ -133,9 +133,9 @@ BLE Wi-Fi provisioning write, read-only MQTT live capture, native `.k1mqtt` and
 reviewed-TSV replay, raw-first evidence storage, device-reported scan
 time/distance/speed and measured preview metrics. Its frontend contribution now
 also owns an optional spatial-scene control block, including acquisition phase,
-telemetry and the stop action. On the active laboratory profile that stop action
-finalizes local reception only; physical K1 scanning is still started and
-stopped by the verified double-click.
+telemetry and the stop action. Operator-manual acquisition still finalizes only
+local reception; plugin-commanded v0.5.0 acquisition uses the separately gated
+canonical K1 START/STOP dialogue.

 The exact recovered `ModelingRequest` start/stop encoder, response correlator
 and device-status state machine are implemented as inert protocol components.
@ -147,16 +147,18 @@ as one private application-level value in the observed client, not a manual
 per-scanner profile. The whole pre-START order and START/STOP payloads are
 byte-matched offline. A fixed macOS Keychain loader now supplies the exact
 application authority without env/file/browser fallback, and a five-batch
-orchestrator passes all retained response barriers. The installed publisher
-boundary is structurally write-disabled and cannot call its sink. Plugin v0.4.0
-wires a dormant coordinator into the facade: explicit shadow arm holds authority
+orchestrator passes all retained response barriers. The legacy shadow publisher
+boundary remains structurally write-disabled and cannot call its sink. Its
+dormant coordinator can hold authority
 for at most 300 seconds and expiry/disarm/reprovision/acquisition/shutdown revoke
-it together with the orchestrator. A separate, uninstalled physical-acceptance
-transport now reproduces MQTT 3.1.1 `clean_session=false`, keepalive 60, exact
+it together with the orchestrator. Plugin v0.5.0 installs a separate
+physical-acceptance transport reproducing MQTT 3.1.1 `clean_session=false`,
+keepalive 60, exact
 response subscriptions, QoS2 completion and the five response-gated batches.
 It consumes operation keys before publish and poisons unknown outcomes without
-retry. Neither component is wired to facade/UI; `vendor_writes_enabled` remains
-false. The first operator-present physical attempt on 2026-07-18 emitted only
+retry. One background owner services that socket between separate connection,
+workspace, project, START, STOP and steady-green UI actions; navigation cannot
+emit a command. The first operator-present physical attempt on 2026-07-18 emitted only
 the first six bootstrap requests, then failed closed while correlating the third
 response batch; START was not emitted. A second one-shot attempt correlated all
 ten pre-START requests and the START acknowledgement, but incorrectly collapsed
--- a/apps/control-station/README.md
+++ b/apps/control-station/README.md
@ -322,12 +322,13 @@ facts и старые presentation-поля `phase`, `message`, `devices`,
  очищается после успешного ответа и не сохраняется в URL/local storage.
 - BLE-подключение выполняет только отдельно рассмотренную provisioning-запись;
  случайные GATT writes и автоматические повторы запрещены.
- MQTT live/replay не публикует команды устройству. Запуск и остановка
-  физического сканирования остаются за кнопкой K1.
- Exact start/stop codec, response correlator и device-status state machine
-  остаются inert: они не импортируют MQTT transport. Header derivation известен,
-  но legitimate OpenAPI key provisioning и durable post-stop save gate не
-  доказаны, поэтому `vendor_writes_enabled=false`.
+- MQTT data live/replay остаётся subscribe-only. Команды изолированы в
+  plugin-owned canonical control session и доступны только через отдельные
+  operator-present UI checkpoints.
+- Exact start/stop codec, response correlator и device-status state machine не
+  владеют transport. Plugin v0.5.0 связывает их отдельным single-owner MQTT
+  контуром без wall-clock переходов, reconnect или automatic retry; после STOP
+  обязательны live READY и подтверждённый постоянный зелёный индикатор.
 - Live-сессии сначала сохраняют сырые сообщения и camera segments, затем
  формируют disposable preview. При перегрузке preview может быть отброшен,
  native evidence сохраняется. MQTT durability имеет bounded group-commit RPO,
--- a/docs/01_IMPLEMENTATION_PLAN.md
+++ b/docs/01_IMPLEMENTATION_PLAN.md
@ -21,7 +21,7 @@ Each gate produces evidence and an explicit GO, PAUSE or BLOCKED result.
 | Stage 7 observation archive | GO (point/pose/telemetry contract) — durable catalog, recovery, capture-clock-bounded RRD preparation, archived metric time series, saved-session timeline and atomic playback are implemented |
 | Stage 7 recorded cameras | GO (contract), acceptance pending — acquisition-owned fMP4 archive and player are implemented/tested; one real archived K1 camera plus point-cloud session has not passed playback yet |
 | Plugin isolation | GO (laboratory control plane) — vendor backend/frontend and optional scene controls are plugin-owned; manifest/runtime descriptor parity, versioned handshake, lifecycle health and transport correlation fail closed while execution remains in-process |
-| K1 application control | PAUSE (accepted START followed by `ALGORITHM_ERROR`) — first live attempt stopped before START on a batch-3 correlation failure; a second attempt correlated all 10 pre-START requests plus START but collapsed UI stages into 365 ms and omitted the retained post-START/control-session lifecycle. The collapsed path and standalone START/STOP are disabled. An uninstalled offline executor now uses explicit UI checkpoints plus live DeviceStatus gates; no further physical write is authorized yet |
+| K1 application control | OPERATOR ACCEPTANCE READY — the failed collapsed path and standalone START/STOP remain disabled. Plugin v0.5.0 installs one continuous control-session owner behind separate connection, workspace, project, START, STOP and steady-green UI actions. No wall-clock transition, automatic retry, navigation-triggered command or repository-test equipment I/O exists. A full operator-run physical cycle and native-project verification remain open |
 | Stage 8 product storage | PAUSE — retention, replication, encryption, capacity monitoring and long-run browser/WASM stress remain deployment gates |

 USB project copying remains optional ground truth rather than a blocker for the
--- a/docs/05_K1_MQTT_STREAM_PROFILE.md
+++ b/docs/05_K1_MQTT_STREAM_PROFILE.md
@ -260,7 +260,7 @@ operator power cycle restored steady green.
 This disproves the earlier assumption that byte-matched pre-START payloads plus
 a correlated START acknowledgement are sufficient acceptance. The legacy
 collapsed `run_bootstrap()` executor now rejects before emission. Its
-replacement is an uninstalled acceptance-only session owner. It requires the
+replacement is an operator-driven acceptance session owner. It requires the
 observed connection, workspace-entry and project-prompt checkpoints instead of
 wall-clock floors, sends the immediate post-START ModelingStatus read, services
 the same MQTT socket until live `SCANNING + project + init_ready`, then emits the
@ -270,9 +270,10 @@ standby. System-error and DeviceStatus reports are decoded into redacted safety
 state; a fault forbids further automatic action. Standalone START/STOP are
 disabled. MQTT keepalive/report processing also continues while the operator is
 between UI actions; the 15–120-second command permit is created at the actual
-START or STOP confirmation, not at connection time. This path is
-synthetic-test-only and remains outside facade/UI, so it
-does not authorize a new physical attempt.
+START or STOP confirmation, not at connection time. Plugin v0.5.0 now exposes
+this path through separate plugin-owned UI actions. Repository tests use only
+in-memory transports; physical execution occurs only from an explicit operator
+click against an already selected direct-LAN K1.

 The one-time Keychain administration command uses `security -w` as the final
 argument so Apple's own TTY prompt receives the authority. Mission Core never
--- a/docs/06_K1_LIVE_VIEWER.md
+++ b/docs/06_K1_LIVE_VIEWER.md
@ -115,44 +115,45 @@ directly and use their sibling metadata receive timestamps when present.
   complete visible-device list.
 4. Enter the existing router SSID/password and explicitly authorize the reviewed
   provisioning write. The backend does not retry the write automatically.
-5. Enter the required project name. Mission Core NFKC-normalizes and trims it,
-   rejects control/surrogate characters or more than 96 characters, and stores
-   it as local display metadata rather than a path. The read-only profile does
-   not send it to K1.
-6. When K1 reports a non-AP private address, choose **Подготовить локальный
-   приём данных**. The stronger “initiate device work” wording appears only for
-   a future profile that actually authorizes a vendor write.
-7. Wait until the UI reports that the local Rerun bridge is ready. No manual
-   viewer URL is needed.
-8. Open **Наблюдение → Пространственная сцена**. The K1 plugin's optional scene
-   block shows the local preparation/acquisition phase and stop action.
-9. Double-click the physical K1 button to start scanning. Real point frames and
-   pose/trajectory updates then appear in the embedded viewport.
+5. Confirm operator presence, closed LixelGO, storage/power and steady green;
+   choose **Подключить управление K1**. This emits only connection operations
+   1–6 and then waits indefinitely for the next UI action.
+6. Choose **Открыть рабочее пространство K1** for operation 7.
+7. Enter the required project name and choose **Сохранить проект и подготовить
+   локальный приём**. Mission Core normalizes it, prepares evidence reception
+   and releases only operations 8–10; the name itself is not sent yet.
+8. After the project step is ready, choose **Запустить сканирование K1** once.
+   The project name is carried by canonical START. Mission Core opens
+   **Наблюдение → Пространственная сцена** and shows calibration while the same
+   control socket waits for `SCANNING + project + init_ready`.
+9. Real point frames and pose/trajectory updates then appear in the embedded
+   viewport. Do not use the physical button or open LixelGO during this cycle.
 10. When K1 emits `ModelingReport`, the same plugin block shows its current scan
    time, route distance and speed. These are device reports, not values inferred
    from a browser timer or accumulated across a device counter reset.
-11. Double-click K1 again to stop physical scanning and wait for steady green,
-    then choose **Остановить локальный приём** in the scene or device workflow
-    so capture, camera archive and summaries are finalized. That UI action does
-    not stop K1 on the active profile.
+11. Choose **Остановить устройство и запись** in the scene. The
+    plugin-commanded path emits one canonical STOP on the original socket,
+    waits for live unbound READY, and asks the operator to confirm the constant
+    green indicator before capture, camera archive and summaries are finalized.

 Each new live run creates a direct child below `MISSIONCORE_EVIDENCE_DIR`, or
 `.runtime/mission-core/evidence/sessions/` by default, with raw MQTT frames,
 per-message metadata and a hash summary. Repository-level
 `sessions/*_viewer_live` is legacy import-only evidence and is never selected by
-the current writer. The connector subscribes to the fixed report-topic
-allowlist and does not publish an application request or modeling command.
+the current writer. The data connector remains subscribe-only. Application
+requests are isolated in the separate canonical control-session owner and can
+be emitted only by explicit staged UI actions.

-The recovered command substrate is intentionally inert. It byte-matches the ten
+The recovered command substrate byte-matches the ten
 observed pre-START requests plus START/STOP, correlates DeviceInfo and modeling
-responses, and classifies live device states without importing MQTT or
-publishing anything. One private application-level OpenAPI authority is kept
+responses, and classifies live device states before any command transition. One
+private application-level OpenAPI authority is kept
 separate from the transient vendor ID/serial returned by the BLE-selected K1.
-The fixed Keychain loader, bounded execution lease and dormant facade
-orchestrator now exist. No emission method or live MQTT sink is installed, and
-an acceptance-only transport exists outside the facade. Keychain provisioning,
-physical START/STOP and durable save completion remain open, so
-`vendor_writes_enabled` is false and the physical-button workflow is canonical.
+The fixed Keychain loader and dormant shadow coordinator remain available for
+inspection. Plugin v0.5.0 additionally installs a continuous interactive MQTT
+owner: operations 1–6 at connection, 7 at workspace entry, 8–10 at project
+preparation, then separately permitted START and STOP. Physical START/STOP and
+durable native-project completion still require operator acceptance.

 ## Automatic Rerun source and lifecycle

--- a/docs/07_MISSION_CORE_MONOREPO.md
+++ b/docs/07_MISSION_CORE_MONOREPO.md
@ -138,21 +138,20 @@ after explicit operator attestation of firmware `3.0.2` and direct-LAN topology,
 and records the basis as `operator-attested`. That claim is not device-derived
 proof. The profile independently records observation, decode, replay,
 physical-verification and write evidence. Loading it cannot authorize a
-transport mutation. Application-command publishing remains disabled; the
-separately reviewed BLE Wi-Fi provisioning write retains its own explicit
-operator gate.
+transport mutation. BLE Wi-Fi provisioning and application control retain
+separate explicit operator gates.

-An exact but inert K1 application-control substrate now lives inside the vendor
+An exact K1 application-control substrate now lives inside the vendor
 plugin. It byte-matches the retained ten-request pre-START dialogue plus
 START/STOP, correlates live DeviceInfo/modeling responses and maps bounded
-device-status values into an observation-only state machine. The OpenAPI value
+device-status values into a fail-closed state machine. The OpenAPI value
 is one private application-level authority; vendor ID and serial come from the
-BLE-selected live K1 and are cross-checked against status. No MQTT publisher
-exists. A fixed Keychain loader, bounded lease and dormant facade orchestrator
-are present, but there is no emission method or live MQTT sink. Keychain item
-provisioning and stable-artifact proof after STOP remain unresolved. A separate
-acceptance-only transport is not imported by the facade, so
-`vendor_writes_enabled=false` remains authoritative.
+BLE-selected live K1 and are cross-checked against status. Plugin v0.5.0 owns a
+single interactive MQTT session from connection through STOP/standby, with one
+explicit UI action per recorded lifecycle boundary and no automatic retry. A
+fixed Keychain loader and dormant shadow coordinator remain present. Stable
+physical proof after STOP remains unresolved; write capability is exposed only
+while that interactive socket owner is active.

 ## Semantic lifecycle

--- a/docs/adr/0010-plugin-owned-frontend-device-workflows.md
+++ b/docs/adr/0010-plugin-owned-frontend-device-workflows.md
@ -66,13 +66,16 @@ performs no implicit stop.

 K1 project names are required, NFKC-normalized and trimmed, rejected for control
 or surrogate characters or more than 96 Unicode characters, and sent to the
-backend as local display metadata. The active profile has
-`vendor_writes_enabled=false`, so its
+backend as local display metadata. At the time of this ADR the active profile
+had `vendor_writes_enabled=false`, so its
 buttons and scene control say that they prepare/stop local reception. Before an
 acquisition exists, device-start wording is gated by active-control capability;
 after start, calibration/device-stop wording additionally requires a
 plugin-commanded acquisition mode.

+The application-control portion is superseded by ADR 0012 and plugin v0.5.0;
+the plugin ownership and host-boundary decisions remain unchanged.
+
 Plugin CSS is imported with the contribution and scoped below
 `.xgrids-k1-plugin`. A plugin cannot add global navigation, route ownership or
 unscoped global selectors.
--- a/docs/adr/0012-device-bound-k1-command-authority.md
+++ b/docs/adr/0012-device-bound-k1-command-authority.md
@ -110,8 +110,8 @@ shadow arm/disarm/state actions and redacted snapshots. The coordinator has no
 request-emission method and the installed sink is explicitly uninstalled; this
 runtime wiring does not widen write authority.

-`application_mqtt.py` and `application_acceptance.py` provide the next, still
-uninstalled physical-acceptance boundary. The MQTT type repeats the retained
+`application_mqtt.py` and `application_acceptance.py` provide the reviewed
+physical-acceptance boundary. The MQTT type repeats the retained
 3.1.1 session (`clean_session=false`, keepalive 60), subscribes only to exact
 known response topics, admits only reviewed request topics and QoS2/retain-false
 envelopes, and consumes explicit bootstrap ordinals/modeling actions before the
@ -134,8 +134,18 @@ MQTT through explicit STOP and waits for live READY plus operator-confirmed
 standby. Fault/status observations are redacted and any fault forbids automatic
 continuation. The socket remains serviced during operator/UI waits, and each
 short action permit is created at its button confirmation rather than at
-connection time. These types are synthetic-test-only, not imported by the facade,
-declared as plugin actions or represented by UI controls.
+connection time.
+
+Plugin v0.5.0 installs this boundary through
+`application_session.py`. One background owner is the only thread allowed to
+touch the control MQTT client. REST/UI actions release exactly one checkpoint:
+session open (1–6), workspace entry (7), project preparation (8–10), START, STOP
+and steady-green confirmation. Preparing local reception happens before the
+START event is released. After STOP, local capture remains owned until live
+unbound READY and explicit visual confirmation. Page close, model switching,
+polling and service state reads cannot emit START/STOP; model switching is
+blocked while the socket is open. Repository tests replace the transport with
+in-memory fakes and perform no equipment I/O.

 `MacOSKeychainApplicationAuthorityProvisioner` invokes Apple's interactive
 `security add-generic-password ... -w` prompt with `-w` last. The private value
--- a/plugins/xgrids-k1/README.md
+++ b/plugins/xgrids-k1/README.md
@ -21,7 +21,8 @@ The plugin owns:
 - BLE discovery hints and K1 GATT metadata;
 - the reviewed firmware-3 Wi-Fi provisioning profile;
 - K1 LAN status and private-address validation;
- subscribe-only MQTT transport and report-topic allowlist;
+- subscribe-only data MQTT transport plus a separately bounded canonical
+  application-control transport;
 - native `.k1mqtt` capture;
 - firmware-scoped protobuf/LZ4 and legacy codecs;
 - normalization of K1 point cloud and pose, plus raw-only preservation of the
@ -31,8 +32,9 @@ The plugin owns:
 - K1-specific operator instructions and compatibility tests.
 - the scoped React `device.connection` contribution and its BLE/Wi-Fi and
  acquisition pipeline UI.
- the dormant application-control facade boundary: explicit shadow arm/disarm,
-  a 15–300 second Keychain-backed in-memory authority lease, and redacted state.
+- the interactive canonical application-control session: one socket owner,
+  separate workspace/project/START/STOP UI checkpoints, live status gates,
+  single-action physical permits and no automatic retry.

 The plugin does not own:

@ -61,10 +63,11 @@ legacy router; both paths now cross the same runtime transport and delegate to t
 `XgridsK1CompatibilityService` methods. Synchronous capture/runtime operations
 run outside the FastAPI event loop.

-Model switching calls the plugin deactivation hook. An active acquisition uses
-semantic `acquisition.stop` in `capture-only` mode; replay and pre-v1alpha2
-sessions retain the legacy `stream.stop` shim. Neither path claims that the
-physical K1 stopped without separate operator evidence. BLE, MQTT, codec,
+Model switching calls the plugin deactivation hook. It is rejected while the
+canonical K1 control socket is open, so navigation can never become an implicit
+device STOP. Operator-manual acquisition uses semantic `acquisition.stop` in
+`capture-only` mode; replay and pre-v1alpha2 sessions retain the legacy
+`stream.stop` shim. BLE, MQTT, codec,
 archive discovery and RRD export modules now live under the plugin package
 after replay parity and physical K1 regression. The current transport remains
 in-process and its health is lifecycle-only; process isolation, crash/restart
@ -81,18 +84,18 @@ device I/O with:
 uv run python plugins/xgrids-k1/profile_loader.py
 ```

-Plugin v0.4.0 does not widen device authority. Its application-control
-coordinator has no request-emission method, no live MQTT sink and no UI control;
-`vendor_writes_enabled` remains false. A separate uninstalled acceptance-only
-transport now implements exact subscriptions, QoS2 completion, response
-barriers and no-retry poisoning. The admin CLI can provision the fixed Keychain
-item through Apple's hidden prompt without accepting the value as an argument.
-Neither path is imported by the facade. The first physical attempt emitted only
-bootstrap ordinals 1–6 and failed closed on live batch-3 response correlation;
-START was not emitted and the K1 remained READY. The temporary lab Keychain item
-was deleted. An OS-independent plugin/edge authority provider, redacted live
-response comparison and a newly permitted full START/STOP acceptance remain
-required.
+Plugin v0.5.0 installs that reviewed transport behind explicit plugin actions.
+Opening control performs only the connection-owned operations 1–6. Workspace
+entry releases operation 7; saving the project and preparing local reception
+releases operations 8–10; a separate START click carries the project name and
+then waits for bound `SCANNING + project + init_ready` before operations 13–14.
+STOP is separately permitted, never retried, and keeps the same socket until K1
+reports unbound READY and the operator confirms a steady green indicator. The
+admin CLI still provisions the fixed Keychain item through Apple's hidden
+prompt without accepting the private value as an argument. No physical command
+is emitted merely by loading the plugin, opening the page, navigating, polling
+state or running repository tests. Full v0.5.0 physical acceptance remains an
+operator-run gate.

 The optional owner-controlled iPhone/LixelGO observation tool lives under
 [`lab/iphone-capture/`](lab/iphone-capture/). It pins `pymobiledevice3` in a
--- a/plugins/xgrids-k1/frontend/README.md
+++ b/plugins/xgrids-k1/frontend/README.md
@ -8,12 +8,14 @@ The contribution contains:

 - `K1ProvisioningPipeline` for power confirmation, BLE discovery and the
  reviewed Wi-Fi provisioning write;
- `K1AcquisitionPipeline` for live receiver preparation, operator-manual K1
-  start/stop and compatibility file replay;
+- `K1AcquisitionPipeline` for explicit canonical connection/workspace/project/
+  START checkpoints, local receiver preparation and compatibility file replay;
+- `K1SpatialControls` for an explicit no-retry STOP followed by the separate
+  READY plus steady-green completion gate;
 - plugin-local diagnostics, metrics, API state, lifecycle mapping,
  observation-source mapping and scoped styles;
- typed v0.4.0 shadow application-control state/arm/disarm contracts. No button
-  is rendered because the plugin has no live command transport;
+- typed v0.5.0 interactive application-control state plus legacy shadow
+  inspection contracts;
 - `plugin.ts`, which binds the manifest `device.connection` component key to
  the runtime provider and connection view.

--- a/plugins/xgrids-k1/frontend/src/api.ts
+++ b/plugins/xgrids-k1/frontend/src/api.ts
@ -104,6 +104,47 @@ export interface XgridsApplicationControlExecution {
  can_emit_requests: false;
 }

+export type XgridsApplicationControlPhase =
+  | "idle"
+  | "connecting"
+  | "connection-ready"
+  | "workspace-requested"
+  | "workspace-ready"
+  | "project-requested"
+  | "project-ready"
+  | "start-requested"
+  | "initializing"
+  | "scanning"
+  | "stop-requested"
+  | "stopping"
+  | "awaiting-standby-confirmation"
+  | "completed"
+  | "closed"
+  | "failed";
+
+export interface XgridsApplicationControlSession {
+  mode: "interactive-canonical";
+  state: XgridsApplicationControlPhase;
+  control_socket_open: boolean;
+  can_open: boolean;
+  can_enter_workspace: boolean;
+  can_prepare_project: boolean;
+  can_start: boolean;
+  can_stop: boolean;
+  can_confirm_standby: boolean;
+  pending_operator_action?: string | null;
+  scripted_transitions: false;
+  automatic_retry: false;
+  outcome_unknown: boolean;
+  failure?: {
+    code?: string;
+    message?: string;
+    safe_to_retry?: boolean;
+  } | null;
+  dialogue?: Record<string, unknown> | null;
+  transport?: Record<string, unknown> | null;
+}
+
 export interface XgridsAcquisition {
  schema_version?: string;
  acquisition_id: string;
@ -228,6 +269,7 @@ export interface XgridsK1State {
  compatibility?: XgridsCompatibilityState | null;
  modeling_control_safety?: XgridsModelingControlSafety | null;
  application_control_execution?: XgridsApplicationControlExecution | null;
+  application_control_session?: XgridsApplicationControlSession | null;
  device_ref?: XgridsDeviceRef | null;
  device_session?: XgridsDeviceSession | null;
  acquisition?: XgridsAcquisition | null;
@ -288,6 +330,7 @@ export interface StartAcquisitionRequest {
  operation_id?: string;
  idempotency_key?: string;
  deadline_seconds?: number;
+  physical_acceptance?: OperatorPresenceConfirmation;
 }

 export interface StopAcquisitionRequest {
@ -297,6 +340,7 @@ export interface StopAcquisitionRequest {
  operation_id?: string;
  idempotency_key?: string;
  deadline_seconds?: number;
+  physical_acceptance?: OperatorPresenceConfirmation;
 }

 export interface AbortAcquisitionRequest {
@ -335,6 +379,23 @@ export interface ShadowApplicationControlArmRequest {
  timezone_name: string;
 }

+export interface OperatorPresenceConfirmation {
+  operator_present: true;
+  owner_controlled_device: true;
+  lixelgo_closed: true;
+  battery_storage_confirmed: true;
+  expected_physical_state_confirmed: true;
+}
+
+export interface OpenApplicationControlSessionRequest
+  extends OperatorPresenceConfirmation {
+  timezone_name: string;
+}
+
+export interface EnterApplicationWorkspaceRequest {
+  operator_confirmed: true;
+}
+
 export class ApiError extends Error {
  readonly status: number;

@ -496,6 +557,22 @@ export const xgridsK1Api = {
  disarmShadowApplicationControl(): Promise<XgridsK1State> {
    return invokeState(xgridsK1Actions.applicationControlShadowDisarm);
  },
+
+  openApplicationControlSession(
+    body: OpenApplicationControlSessionRequest,
+  ): Promise<XgridsK1State> {
+    return invokeState(xgridsK1Actions.applicationControlSessionOpen, body);
+  },
+
+  enterApplicationWorkspace(
+    body: EnterApplicationWorkspaceRequest,
+  ): Promise<XgridsK1State> {
+    return invokeState(xgridsK1Actions.applicationControlWorkspaceEnter, body);
+  },
+
+  closeApplicationControlSession(): Promise<XgridsK1State> {
+    return invokeState(xgridsK1Actions.applicationControlSessionClose);
+  },
 };

 export type EventSocketStatus = "connecting" | "open" | "closed" | "error";
--- a/plugins/xgrids-k1/frontend/src/components/K1AcquisitionPipeline.tsx
+++ b/plugins/xgrids-k1/frontend/src/components/K1AcquisitionPipeline.tsx
@ -14,6 +14,7 @@ import { EXACT_PROFILE_ATTESTATION } from "../compatibility";
 import { runAutomaticSpatialSourceStart } from "../automaticSourceStart";
 import {
  isConfirmedLiveState,
+  isSoftwareCommandedAcquisition,
  isSourceRuntimeBusy,
  isVendorWriteCapable,
  recoverableAcquisition,
@ -21,6 +22,7 @@ import {
 } from "../lifecycle";
 import { normalizeProjectName, validateProjectName } from "../projectName";
 import type { XgridsK1Controller } from "../runtimeContext";
+import type { OperatorPresenceConfirmation } from "../api";

 type SessionIntent = "live" | "replay";

@ -29,6 +31,14 @@ const sessionItems = [
  { value: "replay", label: "Повтор записи" },
 ] satisfies Array<{ value: SessionIntent; label: string }>;

+const PHYSICAL_ACCEPTANCE = {
+  operator_present: true,
+  owner_controlled_device: true,
+  lixelgo_closed: true,
+  battery_storage_confirmed: true,
+  expected_physical_state_confirmed: true,
+} satisfies OperatorPresenceConfirmation;
+
 export function K1AcquisitionPipeline({
  controller,
  profileConfirmed,
@ -43,9 +53,14 @@ export function K1AcquisitionPipeline({
  const {
    state,
    pendingAction,
-    prepareAndStartAcquisition,
+    openApplicationControlSession,
+    enterApplicationWorkspace,
+    closeApplicationControlSession,
+    prepareAcquisition,
+    startPreparedAcquisition,
    startReplay,
    stop,
+    confirmStoppedAtSteadyGreen,
    abort,
  } = controller;
  const [sessionIntent, setSessionIntent] = useState<SessionIntent>("live");
@ -55,12 +70,15 @@ export function K1AcquisitionPipeline({
  const [replayPath, setReplayPath] = useState("");
  const [replaySpeed, setReplaySpeed] = useState("1");
  const [replayLoop, setReplayLoop] = useState(false);
+  const [physicalAcceptanceConfirmed, setPhysicalAcceptanceConfirmed] = useState(false);
  const hydratedAcquisitionId = useRef<string | null>(null);

  const activeAcquisition = recoverableAcquisition(state);
  const preparedAcquisition = activeAcquisition?.state === "prepared" ? activeAcquisition : null;
  const projectNameValidation = validateProjectName(projectName);
  const vendorWriteCapable = isVendorWriteCapable(state);
+  const control = state?.application_control_session;
+  const controlPhase = control?.state ?? "idle";

  useEffect(() => {
    if (state?.source_mode === "live" || state?.source_mode === "replay") {
@ -103,16 +121,29 @@ export function K1AcquisitionPipeline({
    [sessionLocked],
  );

-  const submitLive = async () => {
+  const openControl = async () => {
+    if (!physicalAcceptanceConfirmed || !state?.k1_ip) return;
+    const timezoneName = Intl.DateTimeFormat().resolvedOptions().timeZone || "Etc/UTC";
+    await openApplicationControlSession({
+      ...PHYSICAL_ACCEPTANCE,
+      timezone_name: timezoneName,
+    });
+  };
+
+  const prepareProject = async () => {
    setProjectNameTouched(true);
    if (!profileConfirmed || sourceRuntimeBusy || projectNameValidation.error) return;
    const targetHost = liveHost.trim();
+    await prepareAcquisition({
+      project_name: projectNameValidation.value,
+      ...(targetHost ? { host: targetHost } : {}),
+      compatibility_attestation: EXACT_PROFILE_ATTESTATION,
+    });
+  };
+
+  const startLive = async () => {
    await runAutomaticSpatialSourceStart(
-      () => prepareAndStartAcquisition({
-        project_name: projectNameValidation.value,
-        ...(targetHost ? { host: targetHost } : {}),
-        compatibility_attestation: EXACT_PROFILE_ATTESTATION,
-      }),
+      () => startPreparedAcquisition(PHYSICAL_ACCEPTANCE),
      activateAutomaticSpatialSource,
      openSpatialScene,
    );
@ -148,52 +179,114 @@ export function K1AcquisitionPipeline({
      />
      {effectiveSessionIntent === "live" ? (
        <div className="session-form">
-          <TextField
-            label="Название проекта"
-            hint="Обязательное поле · до 96 символов"
-            value={projectName}
-            onChange={(event) => {
-              setProjectName(event.target.value);
-              setProjectNameTouched(true);
-            }}
-            onBlur={() => setProjectName((value) => normalizeProjectName(value))}
-            disabled={sessionLocked}
-            autoComplete="off"
-            aria-invalid={projectNameTouched && projectNameValidation.error ? true : undefined}
-            description={projectNameTouched && projectNameValidation.error
-              ? projectNameValidation.error
-              : "Имя сохраняется в локальной сессии Mission Core для K1; в путь к файлам не подставляется."}
-            placeholder="Например, Испытание маршрута 01"
-          />
-          <TextField
-            label="Адрес устройства"
-            hint="Обычно определяется автоматически"
-            value={liveHost}
-            onChange={(event) => setLiveHost(event.target.value)}
-            disabled={sessionLocked}
-            spellCheck={false}
-            placeholder={state?.k1_ip || preparedAcquisition?.target_host || "Сначала подключите устройство к Wi‑Fi"}
-          />
-          <Button
-            variant="primary"
-            icon={<Icon name="activity" />}
-            disabled={isBusy || !profileConfirmed || !liveTargetReady || projectNameValidation.error !== null || sourceRuntimeBusy || (activeAcquisition !== null && preparedAcquisition === null)}
-            onClick={() => void submitLive()}
-          >
-            {pendingAction === "live"
-              ? vendorWriteCapable ? "Инициируем работу устройства…" : "Подготавливаем локальный приём…"
-              : vendorWriteCapable
-                ? "Инициировать приём данных и работу устройства"
-                : preparedAcquisition ? "Продолжить подготовленный приём" : "Подготовить локальный приём данных"}
-          </Button>
+          {(control?.can_open ?? controlPhase === "idle") ? (
+            <>
+              <Checker
+                checked={physicalAcceptanceConfirmed}
+                label="Я рядом с выбранным K1; LixelGO закрыт; питание и место для записи проверены; индикатор постоянно зелёный"
+                onChange={setPhysicalAcceptanceConfirmed}
+              />
+              <Button
+                variant="primary"
+                icon={<Icon name="activity" />}
+                disabled={isBusy || !profileConfirmed || !state?.k1_ip || !physicalAcceptanceConfirmed}
+                onClick={() => void openControl()}
+              >
+                {pendingAction === "control"
+                  ? "Открываем канонический диалог…"
+                  : "Подключить управление K1"}
+              </Button>
+            </>
+          ) : null}
+          {controlPhase === "connection-ready" ? (
+            <Button
+              variant="primary"
+              disabled={isBusy}
+              onClick={() => void enterApplicationWorkspace()}
+            >
+              {pendingAction === "control"
+                ? "Открываем рабочее пространство…"
+                : "Открыть рабочее пространство K1"}
+            </Button>
+          ) : null}
+          {["workspace-ready", "project-requested", "project-ready"].includes(controlPhase) || preparedAcquisition ? (
+            <>
+              <TextField
+                label="Название проекта"
+                hint="Будет отправлено только в отдельном START"
+                value={projectName}
+                onChange={(event) => {
+                  setProjectName(event.target.value);
+                  setProjectNameTouched(true);
+                }}
+                onBlur={() => setProjectName((value) => normalizeProjectName(value))}
+                disabled={controlPhase !== "workspace-ready" || preparedAcquisition !== null}
+                autoComplete="off"
+                aria-invalid={projectNameTouched && projectNameValidation.error ? true : undefined}
+                description={projectNameTouched && projectNameValidation.error
+                  ? projectNameValidation.error
+                  : "Сохранение имени само по себе не отправляет START на устройство."}
+                placeholder="Например, TEST001"
+              />
+              <TextField
+                label="Адрес устройства"
+                hint="Тот же direct-LAN адрес, который вернул выбранный K1"
+                value={liveHost}
+                onChange={(event) => setLiveHost(event.target.value)}
+                disabled={controlPhase !== "workspace-ready" || preparedAcquisition !== null}
+                spellCheck={false}
+                placeholder={state?.k1_ip || "Сначала подключите устройство к Wi‑Fi"}
+              />
+            </>
+          ) : null}
+          {controlPhase === "workspace-ready" && !preparedAcquisition ? (
+            <Button
+              variant="primary"
+              disabled={isBusy || projectNameValidation.error !== null || !liveTargetReady}
+              onClick={() => void prepareProject()}
+            >
+              {pendingAction === "live"
+                ? "Сохраняем проект и готовим приём…"
+                : "Сохранить проект и подготовить локальный приём"}
+            </Button>
+          ) : null}
+          {controlPhase === "project-ready" && preparedAcquisition ? (
+            <Button
+              variant="primary"
+              icon={<Icon name="activity" />}
+              disabled={isBusy || !physicalAcceptanceConfirmed}
+              onClick={() => void startLive()}
+            >
+              {pendingAction === "live"
+                ? "Отправляем один канонический START…"
+                : "Запустить сканирование K1"}
+            </Button>
+          ) : null}
+          {["connection-ready", "workspace-ready", "project-ready"].includes(controlPhase) && !activeAcquisition ? (
+            <Button
+              variant="ghost"
+              disabled={isBusy}
+              onClick={() => void closeApplicationControlSession()}
+            >
+              Закрыть управляющую сессию без START
+            </Button>
+          ) : null}
          <p className="live-instruction">
            {!profileConfirmed
              ? "Сначала вручную подтвердите FW 3.0.2 и direct-LAN. Интерфейс не аттестует устройство автоматически."
-              : liveTargetReady
-                ? vendorWriteCapable
-                  ? "Mission Core подготовит локальную запись и отправит профилированную команду запуска K1. После подтверждения запуска начнётся статическая инициализация — не перемещайте устройство до появления потока."
-                  : "Лабораторный профиль подготовит локальный приёмник и перейдёт в ожидание. Затем физически запустите сканирование двойным нажатием кнопки устройства. Программная команда запуска на K1 не отправляется; поток подтверждается только реальными кадрами."
-                : "Сначала подключите устройство к Wi‑Fi или укажите локальный адрес."}
+              : controlPhase === "failed"
+                ? `Диалог остановлен без автоповтора: ${control?.failure?.message || "требуется ручная проверка K1"}`
+                : controlPhase === "connecting"
+                  ? "Выполняются только операции 1–6 записанного диалога. Следующий этап начнётся только по вашей кнопке."
+                  : controlPhase === "workspace-requested"
+                    ? "Выполняется только операция входа в рабочее пространство."
+                    : controlPhase === "project-requested"
+                      ? "Выполняются операции открытия проектного шага; имя ещё не отправляется на K1."
+                      : controlPhase === "start-requested" || controlPhase === "initializing"
+                        ? "Калибровка оборудования. Не перемещайте K1; никаких временных автопереходов и повторов нет."
+                        : controlPhase === "scanning"
+                          ? "K1 подтвердил SCANNING и инициализацию. Остановка доступна в пространственной сцене."
+                          : "Каждый этап канонического диалога запускается отдельным действием оператора."}
          </p>
        </div>
      ) : (
@ -219,7 +312,22 @@ export function K1AcquisitionPipeline({
                : "Остановка завершает только локальный приём и сохранение. Физическое состояние сканера остаётся неизвестным."
              : "Активного источника сейчас нет."}
        </p>
-        <Button variant="secondary" disabled={isBusy || (!sourceRuntimeBusy && activeAcquisition === null)} onClick={() => void stop()}>
+        {control?.can_confirm_standby ? (
+          <Button
+            variant="primary"
+            disabled={isBusy}
+            onClick={() => void confirmStoppedAtSteadyGreen()}
+          >
+            Индикатор постоянно зелёный — завершить запись
+          </Button>
+        ) : null}
+        <Button
+          variant="secondary"
+          disabled={isBusy || (!sourceRuntimeBusy && preparedAcquisition !== null) || (!sourceRuntimeBusy && activeAcquisition === null)}
+          onClick={() => void stop(
+            isSoftwareCommandedAcquisition(state) ? PHYSICAL_ACCEPTANCE : undefined,
+          )}
+        >
          {pendingAction === "stop"
            ? state?.source_mode === "replay" ? "Останавливаем повтор…" : "Останавливаем локальный приём…"
            : state?.source_mode === "replay" ? "Остановить повтор" : preparedAcquisition ? "Завершить подготовленный приём" : "Остановить локальный приём"}
--- a/plugins/xgrids-k1/frontend/src/components/K1SpatialControls.tsx
+++ b/plugins/xgrids-k1/frontend/src/components/K1SpatialControls.tsx
@ -1,7 +1,11 @@
 import { Button } from "@nodedc/ui-react";

 import type { DevicePluginConnectionProps } from "@mission-core/plugin-sdk";
-import type { AcquisitionState, XgridsAcquisition } from "../api";
+import type {
+  AcquisitionState,
+  OperatorPresenceConfirmation,
+  XgridsAcquisition,
+} from "../api";
 import {
  isSoftwareCommandedAcquisition,
  shouldRenderSpatialControls,
@ -19,6 +23,14 @@ interface PhasePresentation {
  busy: boolean;
 }

+const PHYSICAL_ACCEPTANCE = {
+  operator_present: true,
+  owner_controlled_device: true,
+  lixelgo_closed: true,
+  battery_storage_confirmed: true,
+  expected_physical_state_confirmed: true,
+} satisfies OperatorPresenceConfirmation;
+
 function phasePresentation(
  acquisition: XgridsAcquisition,
  softwareCommanded: boolean,
@ -58,8 +70,10 @@ function phasePresentation(
      busy: false,
    },
    awaiting_external_stop: {
-      label: "Ожидание остановки на устройстве",
-      detail: "Mission Core ждёт подтверждения физической остановки K1.",
+      label: softwareCommanded ? "K1 завершает и сохраняет" : "Ожидание остановки на устройстве",
+      detail: softwareCommanded
+        ? "STOP не повторяется. Дождитесь READY и постоянного зелёного индикатора."
+        : "Mission Core ждёт подтверждения физической остановки K1.",
      busy: true,
    },
    stopping: {
@ -94,7 +108,7 @@ function formatDuration(seconds: number): string {

 export function K1SpatialControls(_props: DevicePluginConnectionProps) {
  const controller = useXgridsK1Controller();
-  const { state, pendingAction, stop } = controller;
+  const { state, pendingAction, stop, confirmStoppedAtSteadyGreen } = controller;
  const acquisition = state?.acquisition;
  const cleanupPending = acquisition?.cleanup_pending === true;
  if (!acquisition || !shouldRenderSpatialControls(state)) {
@ -108,8 +122,14 @@ export function K1SpatialControls(_props: DevicePluginConnectionProps) {
    acquisition.state,
  );
  const stopDisabled = pendingAction !== null || stopping;
+  const controlFailure =
+    state.application_control_session?.state === "failed"
+      ? state.application_control_session.failure?.message ||
+        "Канонический диалог остановлен; автоматический повтор запрещён."
+      : null;
  const actionFailure = spatialActionFailure(
    controller.error ??
+      controlFailure ??
      (cleanupPending
        ? "Локальный поток или архив ещё не завершён. Повторите остановку."
        : null),
@ -149,7 +169,7 @@ export function K1SpatialControls(_props: DevicePluginConnectionProps) {
        size="compact"
        variant="secondary"
        disabled={stopDisabled}
-        onClick={() => void stop()}
+        onClick={() => void stop(softwareCommanded ? PHYSICAL_ACCEPTANCE : undefined)}
      >
        {pendingAction === "stop"
          ? softwareCommanded ? "Останавливаем устройство…" : "Останавливаем приём…"
@ -159,6 +179,16 @@ export function K1SpatialControls(_props: DevicePluginConnectionProps) {
              ? "Повторить остановку"
              : softwareCommanded ? "Остановить устройство и запись" : "Остановить локальный приём"}
      </Button>
+      {state?.application_control_session?.can_confirm_standby ? (
+        <Button
+          size="compact"
+          variant="primary"
+          disabled={pendingAction !== null}
+          onClick={() => void confirmStoppedAtSteadyGreen()}
+        >
+          Индикатор постоянно зелёный — завершить запись
+        </Button>
+      ) : null}
    </section>
  );
 }
--- a/plugins/xgrids-k1/frontend/src/manifest.ts
+++ b/plugins/xgrids-k1/frontend/src/manifest.ts
@ -42,4 +42,16 @@ export const xgridsK1Actions = Object.freeze({
    xgridsK1Manifest,
    "application-control.shadow-disarm",
  ),
+  applicationControlSessionOpen: requirePluginAction(
+    xgridsK1Manifest,
+    "application-control.session.open",
+  ),
+  applicationControlWorkspaceEnter: requirePluginAction(
+    xgridsK1Manifest,
+    "application-control.workspace.enter",
+  ),
+  applicationControlSessionClose: requirePluginAction(
+    xgridsK1Manifest,
+    "application-control.session.close",
+  ),
 });
--- a/plugins/xgrids-k1/frontend/src/runtimeContext.tsx
+++ b/plugins/xgrids-k1/frontend/src/runtimeContext.tsx
@ -140,13 +140,17 @@ export function XgridsK1RuntimeProvider({
    if (!activeModel) return;
    return registerDeactivation(async () => {
      if (controller.pendingAction !== null) return false;
-      // Always ask the backend to stop. The browser snapshot may be stale or not
-      // loaded yet, while a previous local capture is still alive.
+      // Never translate navigation/model switching into a K1 control command.
+      // The operator must explicitly finish or close the canonical dialogue.
+      if (controller.state?.application_control_session?.control_socket_open) {
+        return false;
+      }
      return controller.stop();
    });
  }, [
    activeModel,
    controller.pendingAction,
+    controller.state?.application_control_session?.control_socket_open,
    controller.stop,
    registerDeactivation,
  ]);
--- a/plugins/xgrids-k1/frontend/src/useXgridsK1Runtime.ts
+++ b/plugins/xgrids-k1/frontend/src/useXgridsK1Runtime.ts
@ -8,6 +8,8 @@ import {
  openEventSocket,
  type ConnectRequest,
  type EventSocketStatus,
+  type OpenApplicationControlSessionRequest,
+  type OperatorPresenceConfirmation,
  type PrepareAcquisitionRequest,
  type ReplayRequest,
  type XgridsK1State,
@ -25,6 +27,7 @@ import { selectMonotonicXgridsState } from "./stateOrdering";
 export type PendingAction =
  | "scan"
  | "connect"
+  | "control"
  | "live"
  | "replay"
  | "stop"
@ -167,7 +170,26 @@ export function useXgridsK1Runtime(enabled: boolean) {
    [run, state],
  );

-  const prepareAndStartAcquisition = useCallback(
+  const openApplicationControlSession = useCallback(
+    (request: OpenApplicationControlSessionRequest) =>
+      run("control", () => xgridsK1Api.openApplicationControlSession(request)),
+    [run],
+  );
+
+  const enterApplicationWorkspace = useCallback(
+    () =>
+      run("control", () =>
+        xgridsK1Api.enterApplicationWorkspace({ operator_confirmed: true }),
+      ),
+    [run],
+  );
+
+  const closeApplicationControlSession = useCallback(
+    () => run("control", () => xgridsK1Api.closeApplicationControlSession()),
+    [run],
+  );
+
+  const prepareAcquisition = useCallback(
    (request: PrepareAcquisitionRequest) =>
      run("live", async () => {
        const plan = liveStartPlan(state);
@ -178,17 +200,26 @@ export function useXgridsK1Runtime(enabled: boolean) {
        }
        if (plan === "already-running" && state) return state;

-        const prepared =
+        return (
          plan === "resume-prepared" && state
            ? state
-            : await xgridsK1Api.prepareAcquisition(request);
-        const acquisition = prepared.acquisition;
-        if (!acquisition?.acquisition_id) {
-          throw new ApiError("Локальный сервис не вернул идентификатор подготовленного приёма.");
+            : await xgridsK1Api.prepareAcquisition(request)
+        );
+      }),
+    [run, state],
+  );
+
+  const startPreparedAcquisition = useCallback(
+    (physicalAcceptance: OperatorPresenceConfirmation) =>
+      run("live", async () => {
+        const acquisition = state?.acquisition;
+        if (!acquisition?.acquisition_id || acquisition.state !== "prepared") {
+          throw new ApiError("Сначала сохраните проект и подготовьте локальный приём.");
        }
        return xgridsK1Api.startAcquisition({
          acquisition_id: acquisition.acquisition_id,
          expected_state_revision: acquisition.state_revision,
+          physical_acceptance: physicalAcceptance,
        });
      }),
    [run, state],
@ -200,22 +231,57 @@ export function useXgridsK1Runtime(enabled: boolean) {
  );

  const stop = useCallback(
-    () =>
+    (physicalAcceptance?: OperatorPresenceConfirmation) =>
      run("stop", () => {
        const acquisition = state?.acquisition;
        const acquisitionTerminal = isTerminalAcquisitionState(acquisition?.state);
        if (acquisition && !acquisitionTerminal) {
+          const softwareCommanded = isSoftwareCommandedAcquisition(state);
+          if (softwareCommanded && !physicalAcceptance) {
+            throw new ApiError(
+              "Подтвердите присутствие рядом с K1 перед каноническим STOP.",
+            );
+          }
          return xgridsK1Api.stopAcquisition({
            acquisition_id: acquisition.acquisition_id,
-            mode: isSoftwareCommandedAcquisition(state) ? "graceful" : "capture-only",
+            mode: softwareCommanded ? "graceful" : "capture-only",
+            ...(physicalAcceptance
+              ? { physical_acceptance: physicalAcceptance }
+              : {}),
          });
        }
-        // Replay and pre-v1alpha2 sessions remain a compatibility-only path.
        return xgridsK1Api.stopSessionCompatibility();
      }),
    [run, state],
  );

+  const confirmStoppedAtSteadyGreen = useCallback(
+    () =>
+      run("stop", () => {
+        const acquisition = state?.acquisition;
+        if (!acquisition || acquisition.state !== "awaiting_external_stop") {
+          throw new ApiError("K1 сейчас не ожидает подтверждения завершённого STOP.");
+        }
+        const stopOperation = [...(state?.operations ?? [])]
+          .reverse()
+          .find(
+            (operation) =>
+              operation.action === "acquisition.stop" &&
+              operation.status === "operator_action_required",
+          );
+        if (!stopOperation) {
+          throw new ApiError("Не найдена исходная операция STOP; повтор команды запрещён.");
+        }
+        return xgridsK1Api.stopAcquisition({
+          acquisition_id: acquisition.acquisition_id,
+          mode: "graceful",
+          operator_confirmed: true,
+          operation_id: stopOperation.operation_id,
+        });
+      }),
+    [run, state],
+  );
+
  const abort = useCallback(() => {
    const acquisition = state?.acquisition;
    if (!acquisition || isTerminalAcquisitionState(acquisition.state)) {
@ -348,9 +414,14 @@ export function useXgridsK1Runtime(enabled: boolean) {
    clearError: () => setError(null),
    scan,
    connect,
-    prepareAndStartAcquisition,
+    openApplicationControlSession,
+    enterApplicationWorkspace,
+    closeApplicationControlSession,
+    prepareAcquisition,
+    startPreparedAcquisition,
    startReplay,
    stop,
+    confirmStoppedAtSteadyGreen,
    abort,
    setObservationSourceActive,
    updateViewerSettings,
--- a/plugins/xgrids-k1/plugin.manifest.json
+++ b/plugins/xgrids-k1/plugin.manifest.json
@ -3,7 +3,7 @@
  "kind": "DevicePlugin",
  "metadata": {
    "id": "nodedc.device.xgrids-lixelkity-k1",
-    "version": "0.4.0",
+    "version": "0.5.0",
    "displayName": "XGRIDS K1 Integration"
  },
  "spec": {
@ -23,6 +23,7 @@
      "device.discovery.ble",
      "device.provisioning.wifi-over-ble",
      "network.mqtt.subscribe-private-lan",
+      "network.mqtt.publish-private-lan",
      "network.rtsp.read-private-lan",
      "media.publish-local-browser",
      "evidence.write-session-artifacts",
@ -49,7 +50,10 @@
      { "id": "viewer.settings.update", "mutating": true, "secretFields": [] },
      { "id": "application-control.shadow-state", "mutating": false, "secretFields": [] },
      { "id": "application-control.shadow-arm", "mutating": true, "secretFields": [] },
-      { "id": "application-control.shadow-disarm", "mutating": true, "secretFields": [] }
+      { "id": "application-control.shadow-disarm", "mutating": true, "secretFields": [] },
+      { "id": "application-control.session.open", "mutating": true, "secretFields": [] },
+      { "id": "application-control.workspace.enter", "mutating": true, "secretFields": [] },
+      { "id": "application-control.session.close", "mutating": true, "secretFields": [] }
    ],
    "models": [
      {
--- a/plugins/xgrids-k1/profiles/README.md
+++ b/plugins/xgrids-k1/profiles/README.md
@ -39,14 +39,13 @@ capture verifies the `ModelingRequest` topic, action values, field layout,
 literal `{device_id}:ModelingRequest` session relation, retained start settings
 and numeric success code. Retained client/wire evidence identifies OpenAPI as
 one private application-level value rather than a per-scanner profile. A fixed
-read-only macOS Keychain loader, bounded in-memory lease and dormant facade
-orchestrator now exist. The installed runtime has no request-emission method or
-live MQTT sink. A separate uninstalled acceptance transport implements the
-retained MQTT session, exact response subscriptions and poison-on-unknown
-one-shot behavior. Operator-owned Keychain item provisioning, physical
-acceptance, durable save completion and rollback evidence remain unresolved.
-Acquisition therefore stays `operator-manual` through the verified physical
-double-click.
+read-only macOS Keychain loader, bounded shadow lease and dormant facade
+orchestrator remain. Plugin v0.5.0 separately installs an interactive acceptance
+transport implementing the retained MQTT session, exact response subscriptions
+and poison-on-unknown one-shot behavior. The descriptive profile still cannot
+enable writes by itself: active control exists only while the operator-opened
+canonical session owns the socket. Physical acceptance, durable native save
+completion and rollback evidence remain unresolved.
 The standalone encoder models the recovered wire schema, including enum values
 outside the retained request. It is not an authorization policy: any future
 publisher must enforce the exact profile mapping (`2/1/0`, omitted
--- a/src/k1link/device_plugins/xgrids_k1/facade.py
+++ b/src/k1link/device_plugins/xgrids_k1/facade.py
@ -56,6 +56,10 @@ from k1link.device_plugins.xgrids_k1.protocol.application_publish import (
    UninstalledApplicationPublishSink,
    WriteDisabledOneShotPublisher,
 )
+from k1link.device_plugins.xgrids_k1.protocol.application_session import (
+    InteractiveApplicationControlSession,
+    OperatorPresenceConfirmation,
+)
 from k1link.device_plugins.xgrids_k1.protocol.modeling import observe_modeling_report
 from k1link.device_plugins.xgrids_k1.protocol.modeling_safety import (
    LiveModelingControlSafety,
@ -85,7 +89,7 @@ from k1link.web.plugin_runtime import (
 )

 XGRIDS_K1_PLUGIN_ID = "nodedc.device.xgrids-lixelkity-k1"
-XGRIDS_K1_PLUGIN_VERSION = "0.4.0"
+XGRIDS_K1_PLUGIN_VERSION = "0.5.0"
 XGRIDS_K1_MODEL_ID = "xgrids.lixelkity-k1"
 XGRIDS_K1_COMPATIBILITY_PROFILE_ID = "xgrids.lixelkity-k1.fw-3.0.2.direct-lan.v1"

@ -137,6 +141,9 @@ ACTION_VIEWER_SETTINGS_UPDATE = "viewer.settings.update"
 ACTION_APPLICATION_CONTROL_SHADOW_STATE = "application-control.shadow-state"
 ACTION_APPLICATION_CONTROL_SHADOW_ARM = "application-control.shadow-arm"
 ACTION_APPLICATION_CONTROL_SHADOW_DISARM = "application-control.shadow-disarm"
+ACTION_APPLICATION_CONTROL_SESSION_OPEN = "application-control.session.open"
+ACTION_APPLICATION_CONTROL_WORKSPACE_ENTER = "application-control.workspace.enter"
+ACTION_APPLICATION_CONTROL_SESSION_CLOSE = "application-control.session.close"

 RequestedStreamId = Literal[
    "spatial.point-cloud.live",
@ -205,6 +212,17 @@ class OperationContextRequest(StrictRequest):
    deadline_seconds: float | None = Field(default=None, ge=1.0, le=86_400.0)


+class OperatorPresenceRequest(StrictRequest):
+    operator_present: Literal[True]
+    owner_controlled_device: Literal[True]
+    lixelgo_closed: Literal[True]
+    battery_storage_confirmed: Literal[True]
+    expected_physical_state_confirmed: Literal[True]
+
+    def confirmation(self) -> OperatorPresenceConfirmation:
+        return OperatorPresenceConfirmation(**self.model_dump())
+
+
 class PrepareAcquisitionRequest(OperationContextRequest):
    project_name: str = Field(min_length=1, max_length=96)
    host: str | None = Field(default=None, max_length=15)
@ -222,12 +240,14 @@ class PrepareAcquisitionRequest(OperationContextRequest):
 class StartAcquisitionRequest(OperationContextRequest):
    acquisition_id: str | None = Field(default=None, min_length=1, max_length=128)
    expected_state_revision: int | None = Field(default=None, ge=1)
+    physical_acceptance: OperatorPresenceRequest | None = None


 class StopAcquisitionRequest(OperationContextRequest):
    acquisition_id: str | None = Field(default=None, min_length=1, max_length=128)
    mode: Literal["graceful", "capture-only"] = "capture-only"
    operator_confirmed: bool = False
+    physical_acceptance: OperatorPresenceRequest | None = None


 class AbortAcquisitionRequest(OperationContextRequest):
@ -271,6 +291,18 @@ class ShadowApplicationControlArmRequest(StrictRequest):
    )


+class OpenApplicationControlSessionRequest(OperatorPresenceRequest):
+    timezone_name: str = Field(
+        min_length=1,
+        max_length=64,
+        pattern=r"^[A-Za-z0-9._+-]+(?:/[A-Za-z0-9._+-]+)*$",
+    )
+
+
+class EnterApplicationWorkspaceRequest(StrictRequest):
+    operator_confirmed: Literal[True]
+
+
 class XgridsK1CompatibilityService:
    """The proven K1 runtime kept intact behind the plugin facade."""

@ -313,10 +345,16 @@ class XgridsK1CompatibilityService:
        # The host-owned visual runtime receives the vendor normalizer
        # explicitly. There is no implicit K1 decoder in the visual layer.
        self._modeling_control_safety = LiveModelingControlSafety()
+        authority_loader = (
+            application_authority_loader or MacOSKeychainApplicationAuthorityLoader()
+        )
        self._application_control = DormantApplicationControlCoordinator(
-            application_authority_loader or MacOSKeychainApplicationAuthorityLoader(),
+            authority_loader,
            WriteDisabledOneShotPublisher(UninstalledApplicationPublishSink()),
        )
+        self._application_control_session = InteractiveApplicationControlSession(
+            authority_loader
+        )
        self.runtime = VisualizationRuntime(
            normalizer=normalize_k1_message,
            message_observer=self._observe_runtime_message,
@ -329,6 +367,7 @@ class XgridsK1CompatibilityService:
    @_serialized_acquisition_access
    def state(self) -> dict[str, Any]:
        application_control = self._application_control.snapshot().as_dict()
+        application_control_session = self._application_control_session.snapshot()
        runtime = self.runtime.snapshot()
        camera_preview = self.camera_preview.snapshot()
        self._reconcile_acquisition(runtime, camera_preview)
@ -389,6 +428,12 @@ class XgridsK1CompatibilityService:
        active_profile_id = (
            XGRIDS_K1_COMPATIBILITY_PROFILE_ID if compatibility_attestation is not None else None
        )
+        active_control = application_control_session["state"] not in {
+            "idle",
+            "completed",
+            "closed",
+            "failed",
+        }
        return {
            "contract_version": "missioncore.device-plugin-state/v1alpha2",
            "phase": phase,
@ -400,7 +445,11 @@ class XgridsK1CompatibilityService:
                "profile_id": active_profile_id,
                "decision": "limited" if active_profile_id is not None else "unknown",
                "permitted_mode": (
-                    "read-only" if active_profile_id is not None else "evidence-only"
+                    "active-control"
+                    if active_profile_id is not None and active_control
+                    else "read-only"
+                    if active_profile_id is not None
+                    else "evidence-only"
                ),
                "firmware_claim": (
                    "operator-attested-exact-3.0.2"
@ -408,7 +457,7 @@ class XgridsK1CompatibilityService:
                    else "exact-3.0.2-profile-not-attested"
                ),
                "attestation": compatibility_attestation,
-                "vendor_writes_enabled": False,
+                "vendor_writes_enabled": active_control,
                "camera_preview": (
                    (
                        "local-browser-adapter-available"
@ -421,6 +470,7 @@ class XgridsK1CompatibilityService:
            },
            "modeling_control_safety": self._modeling_control_safety.snapshot().as_dict(),
            "application_control_execution": application_control,
+            "application_control_session": application_control_session,
            "device_ref": (
                {
                    "device_id": device_id,
@ -521,6 +571,11 @@ class XgridsK1CompatibilityService:
        return self.state()

    async def connect(self, request: ConnectRequest) -> dict[str, Any]:
+        control_state = self._application_control_session.snapshot()["state"]
+        if control_state not in {"idle", "completed", "closed"}:
+            raise RuntimeError(
+                "сначала завершите или безопасно закройте текущую control-сессию K1"
+            )
        known_ids = {str(item["device_id"]) for item in self.state()["devices"]}
        if request.device_id not in known_ids:
            raise ValueError("сначала найдите и выберите устройство через Bluetooth")
@ -714,6 +769,45 @@ class XgridsK1CompatibilityService:
            }
        return self.state()

+    @_serialized_acquisition_access
+    def open_application_control_session(
+        self,
+        request: OpenApplicationControlSessionRequest,
+    ) -> dict[str, Any]:
+        """Open one continuous canonical dialogue; no later stage is implied."""
+
+        with self._lock:
+            if self._provisioning_active:
+                raise RuntimeError("нельзя открывать control-сессию во время настройки Wi-Fi")
+            target = self._k1_ip
+            attestation = self._compatibility_attestation
+            acquisition = self._acquisition
+        if target is None or attestation is None:
+            raise RuntimeError("сначала подключите и подтвердите exact-profile K1")
+        if acquisition is not None and acquisition.state not in TERMINAL_ACQUISITION_STATES:
+            raise RuntimeError("control-сессия должна быть открыта до подготовки acquisition")
+        self._application_control.disarm()
+        self._application_control_session.open(
+            host=validate_private_ipv4(target),
+            timezone_name=request.timezone_name,
+            confirmation=request.confirmation(),
+        )
+        return self.state()
+
+    @_serialized_acquisition_access
+    def enter_application_workspace(
+        self,
+        request: EnterApplicationWorkspaceRequest,
+    ) -> dict[str, Any]:
+        del request
+        self._application_control_session.enter_workspace()
+        return self.state()
+
+    @_serialized_acquisition_access
+    def close_application_control_session(self) -> dict[str, Any]:
+        self._application_control_session.close_prestart()
+        return self.state()
+
    @_serialized_acquisition_access
    def arm_application_control_shadow(
        self,
@ -751,6 +845,30 @@ class XgridsK1CompatibilityService:
    @_serialized_acquisition_access
    def prepare_acquisition(self, request: PrepareAcquisitionRequest) -> dict[str, Any]:
        self._application_control.disarm()
+        control_state = str(self._application_control_session.snapshot()["state"])
+        if control_state == "failed":
+            raise RuntimeError(
+                "control-сессия K1 завершилась ошибкой и требует ручной проверки"
+            )
+        if control_state in {
+            "connecting",
+            "connection-ready",
+            "workspace-requested",
+            "project-requested",
+            "project-ready",
+            "start-requested",
+            "initializing",
+            "scanning",
+            "stop-requested",
+            "stopping",
+            "awaiting-standby-confirmation",
+        } and control_state != "workspace-ready":
+            raise RuntimeError(
+                "каноническая control-сессия должна ожидать сохранения проекта"
+            )
+        control_mode: Literal["operator-manual", "plugin-commanded"] = (
+            "plugin-commanded" if control_state == "workspace-ready" else "operator-manual"
+        )
        requested_streams = _validated_requested_streams(request)
        target = request.host or self.state()["k1_ip"]
        if not isinstance(target, str) or not target:
@ -762,6 +880,13 @@ class XgridsK1CompatibilityService:
            raise ValueError(
                "адрес точки доступа устройства нельзя использовать как direct-LAN target"
            )
+        if control_mode == "plugin-commanded":
+            with self._lock:
+                control_target = self._k1_ip
+            if control_target is None or target != validate_private_ipv4(control_target):
+                raise ValueError(
+                    "локальный приём должен использовать тот же K1, что и control-сессия"
+                )
        with self._lock:
            if self._acquisition_session_lease is not None:
                raise RuntimeError("предыдущая evidence-сессия ещё не остановлена и не запечатана")
@ -824,7 +949,7 @@ class XgridsK1CompatibilityService:
                    device_id=device_id,
                    device_session_id=device_session_id,
                    compatibility_profile_id=XGRIDS_K1_COMPATIBILITY_PROFILE_ID,
-                    control_mode="operator-manual",
+                    control_mode=control_mode,
                    requested_streams=requested_streams,
                    target_host=target,
                    duration_seconds=request.duration_seconds,
@ -846,6 +971,8 @@ class XgridsK1CompatibilityService:
                self._compatibility_attestation = _attestation_snapshot(
                    request.compatibility_attestation
                )
+            if control_mode == "plugin-commanded":
+                self._application_control_session.open_project_prompt()
            self._operations.transition(
                operation.operation_id,
                "succeeded",
@ -867,6 +994,14 @@ class XgridsK1CompatibilityService:
    @_serialized_acquisition_access
    def start_acquisition(self, request: StartAcquisitionRequest) -> dict[str, Any]:
        acquisition = self._require_acquisition(request.acquisition_id)
+        plugin_commanded = acquisition.control_mode == "plugin-commanded"
+        if plugin_commanded:
+            if request.physical_acceptance is None:
+                raise ValueError(
+                    "START K1 требует явного подтверждения присутствия оператора"
+                )
+            if self._application_control_session.snapshot()["state"] != "project-ready":
+                raise RuntimeError("канонический диалог K1 ещё не готов принять START")
        if (
            request.expected_state_revision is not None
            and request.expected_state_revision != acquisition.state_revision
@ -877,6 +1012,11 @@ class XgridsK1CompatibilityService:
            {
                "acquisition_id": acquisition.acquisition_id,
                "expected_state_revision": request.expected_state_revision,
+                "physical_acceptance": (
+                    request.physical_acceptance.model_dump(mode="json")
+                    if request.physical_acceptance is not None
+                    else None
+                ),
            },
        )
        operation, created = self._operations.begin(
@ -937,6 +1077,12 @@ class XgridsK1CompatibilityService:
                project_name=project_name,
            )
            self._arm_camera_recording(out_dir)
+            if plugin_commanded:
+                assert request.physical_acceptance is not None
+                self._application_control_session.request_start(
+                    project_name=project_name,
+                    confirmation=request.physical_acceptance.confirmation(),
+                )
        except Exception as exc:
            if owns_start:
                with self._lock:
@ -975,6 +1121,7 @@ class XgridsK1CompatibilityService:
    @_serialized_acquisition_access
    def stop_acquisition(self, request: StopAcquisitionRequest) -> dict[str, Any]:
        acquisition = self._require_acquisition(request.acquisition_id)
+        plugin_commanded = acquisition.control_mode == "plugin-commanded"
        with self._lock:
            acquisition_state = acquisition.state
            expected_stop_operation_id = self._acquisition_stop_operation_id
@ -989,6 +1136,12 @@ class XgridsK1CompatibilityService:
                raise ValueError(
                    "подтверждение остановки должно ссылаться на исходную stop-operation"
                )
+            if plugin_commanded and not self._application_control_session.snapshot()[
+                "can_confirm_standby"
+            ]:
+                raise RuntimeError(
+                    "сначала дождитесь READY от K1 и визуально подтвердите зелёный индикатор"
+                )
        elif (
            request.mode == "graceful"
            and acquisition_state
@ -996,11 +1149,27 @@ class XgridsK1CompatibilityService:
                "acquiring",
                "awaiting_external_stop",
            }
+            and not (
+                plugin_commanded
+                and acquisition_state in {"starting", "awaiting_external_start"}
+                and self._application_control_session.snapshot()["state"] == "scanning"
+            )
            and not (acquisition_state in TERMINAL_ACQUISITION_STATES and lease_retained)
        ):
            raise ValueError(
                "graceful stop допустим только после подтверждённого потока point cloud"
            )
+        if (
+            plugin_commanded
+            and request.mode == "graceful"
+            and not request.operator_confirmed
+        ):
+            if request.physical_acceptance is None:
+                raise ValueError(
+                    "STOP K1 требует явного подтверждения присутствия оператора"
+                )
+            if self._application_control_session.snapshot()["state"] != "scanning":
+                raise RuntimeError("канонический диалог K1 ещё не готов принять STOP")

        request_fingerprint = self._request_fingerprint(
            ACTION_ACQUISITION_STOP,
@ -1091,12 +1260,29 @@ class XgridsK1CompatibilityService:
            return self.state()

        if request.mode == "graceful" and not request.operator_confirmed:
+            if plugin_commanded:
+                assert request.physical_acceptance is not None
+                self._application_control_session.request_stop(
+                    confirmation=request.physical_acceptance.confirmation()
+                )
            with self._lock:
                acquisition.transition(
                    "awaiting_external_stop",
-                    message_code="acquisition.stop.operator_action_required",
+                    message_code=(
+                        "acquisition.stop.device_stopping"
+                        if plugin_commanded
+                        else "acquisition.stop.operator_action_required"
+                    ),
                    operator_instructions=(
-                        "Дважды нажмите физическую кнопку устройства и подтвердите остановку.",
+                        (
+                            "Канонический STOP запрошен один раз. Дождитесь READY, "
+                            "убедитесь, что индикатор постоянно зелёный, и подтвердите это."
+                            if plugin_commanded
+                            else (
+                                "Дважды нажмите физическую кнопку устройства и "
+                                "подтвердите остановку."
+                            )
+                        ),
                    ),
                )
                self._acquisition_stop_operation_id = operation.operation_id
@ -1104,7 +1290,11 @@ class XgridsK1CompatibilityService:
                operation.operation_id,
                "operator_action_required",
                stage_code="awaiting-external-stop",
-                message_code="acquisition.stop.operator_action_required",
+                message_code=(
+                    "acquisition.stop.device_stopping"
+                    if plugin_commanded
+                    else "acquisition.stop.operator_action_required"
+                ),
                result={"acquisition_id": acquisition.acquisition_id},
            )
            return self.state()
@ -1116,6 +1306,8 @@ class XgridsK1CompatibilityService:
            message_code="acquisition.stop.stopping_receiver",
        )
        try:
+            if plugin_commanded and request.mode == "graceful" and request.operator_confirmed:
+                self._application_control_session.confirm_standby()
            with self._lock:
                acquisition.transition("stopping", message_code="acquisition.stopping")
            self._stop_acquisition_sources(
@ -1190,6 +1382,11 @@ class XgridsK1CompatibilityService:
        if not created:
            return self.state()
        try:
+            if (
+                acquisition.control_mode == "plugin-commanded"
+                and acquisition.state == "prepared"
+            ):
+                self._application_control_session.close_prestart()
            with self._lock:
                should_abort = acquisition.state not in TERMINAL_ACQUISITION_STATES
                if should_abort:
@ -1338,6 +1535,7 @@ class XgridsK1CompatibilityService:
    @_serialized_acquisition_access
    def close(self) -> None:
        self._application_control.close()
+        self._application_control_session.close()
        with self._lock:
            acquisition = self._acquisition
            close_active_acquisition = (
@ -1613,6 +1811,7 @@ class XgridsK1CompatibilityService:
        failed_stop_operation_id: str | None = None
        unconfirmed_stop_operation_id: str | None = None
        receiver_ready_operation_id: str | None = None
+        receiver_plugin_commanded = False
        acquisition_id: str | None = None
        camera_terminal_status: Literal["complete", "failed"] | None = None
        camera_failure_code: str | None = None
@ -1667,11 +1866,22 @@ class XgridsK1CompatibilityService:
                completed_operation_id = self._acquisition_start_operation_id
                acquisition_id = acquisition.acquisition_id
            elif acquisition.state == "starting" and source_ready:
+                plugin_commanded = acquisition.control_mode == "plugin-commanded"
+                receiver_plugin_commanded = plugin_commanded
                acquisition.transition(
                    "awaiting_external_start",
-                    message_code="acquisition.start.operator_action_required",
+                    message_code=(
+                        "acquisition.start.device_initializing"
+                        if plugin_commanded
+                        else "acquisition.start.operator_action_required"
+                    ),
                    operator_instructions=(
-                        "Приёмник готов. Дважды нажмите физическую кнопку устройства.",
+                        (
+                            "Приёмник готов. Ожидаем канонический START и калибровку K1; "
+                            "не нажимайте физическую кнопку."
+                            if plugin_commanded
+                            else "Приёмник готов. Дважды нажмите физическую кнопку устройства."
+                        ),
                    ),
                )
                receiver_ready_operation_id = self._acquisition_start_operation_id
@ -1776,9 +1986,17 @@ class XgridsK1CompatibilityService:
        if receiver_ready_operation_id is not None:
            self._operations.transition_if_pending(
                receiver_ready_operation_id,
-                "operator_action_required",
-                stage_code="awaiting-external-start",
-                message_code="acquisition.start.operator_action_required",
+                "running" if receiver_plugin_commanded else "operator_action_required",
+                stage_code=(
+                    "device-initializing"
+                    if receiver_plugin_commanded
+                    else "awaiting-external-start"
+                ),
+                message_code=(
+                    "acquisition.start.device_initializing"
+                    if receiver_plugin_commanded
+                    else "acquisition.start.operator_action_required"
+                ),
                result={"acquisition_id": acquisition_id},
            )
        if completed_operation_id is not None:
@ -1856,6 +2074,18 @@ class XgridsK1ServicePort(Protocol):

    def verify_connection(self) -> dict[str, Any]: ...

+    def open_application_control_session(
+        self,
+        request: OpenApplicationControlSessionRequest,
+    ) -> dict[str, Any]: ...
+
+    def enter_application_workspace(
+        self,
+        request: EnterApplicationWorkspaceRequest,
+    ) -> dict[str, Any]: ...
+
+    def close_application_control_session(self) -> dict[str, Any]: ...
+
    def arm_application_control_shadow(
        self,
        request: ShadowApplicationControlArmRequest,
@ -1917,6 +2147,9 @@ class XgridsK1PluginFacade:
            ACTION_APPLICATION_CONTROL_SHADOW_STATE,
            ACTION_APPLICATION_CONTROL_SHADOW_ARM,
            ACTION_APPLICATION_CONTROL_SHADOW_DISARM,
+            ACTION_APPLICATION_CONTROL_SESSION_OPEN,
+            ACTION_APPLICATION_CONTROL_WORKSPACE_ENTER,
+            ACTION_APPLICATION_CONTROL_SESSION_CLOSE,
        }
    )

@ -1975,6 +2208,23 @@ class XgridsK1PluginFacade:
        if action_id == ACTION_APPLICATION_CONTROL_SHADOW_DISARM:
            EmptyRequest.model_validate(payload)
            return await asyncio.to_thread(self.service.disarm_application_control_shadow)
+        if action_id == ACTION_APPLICATION_CONTROL_SESSION_OPEN:
+            open_request = OpenApplicationControlSessionRequest.model_validate(payload)
+            return await asyncio.to_thread(
+                self.service.open_application_control_session,
+                open_request,
+            )
+        if action_id == ACTION_APPLICATION_CONTROL_WORKSPACE_ENTER:
+            workspace_request = EnterApplicationWorkspaceRequest.model_validate(payload)
+            return await asyncio.to_thread(
+                self.service.enter_application_workspace,
+                workspace_request,
+            )
+        if action_id == ACTION_APPLICATION_CONTROL_SESSION_CLOSE:
+            EmptyRequest.model_validate(payload)
+            return await asyncio.to_thread(
+                self.service.close_application_control_session
+            )
        if action_id == ACTION_ACQUISITION_PREPARE:
            prepare_request = PrepareAcquisitionRequest.model_validate(payload)
            return await asyncio.to_thread(self.service.prepare_acquisition, prepare_request)
--- a/src/k1link/device_plugins/xgrids_k1/protocol/application_session.py
+++ b/src/k1link/device_plugins/xgrids_k1/protocol/application_session.py
@ -0,0 +1,488 @@
+from __future__ import annotations
+
+import threading
+import time
+from collections.abc import Callable
+from dataclasses import dataclass
+from typing import Literal
+
+from k1link.device_plugins.xgrids_k1.protocol.application_acceptance import (
+    ApplicationAcceptanceError,
+    PhysicalAcceptanceChecklist,
+    PhysicalAcceptanceDialogueExecutor,
+    PhysicalAcceptancePermit,
+)
+from k1link.device_plugins.xgrids_k1.protocol.application_bootstrap import (
+    ApplicationControlAuthority,
+    LiveDeviceControlBinding,
+    ShadowApplicationBootstrapOrchestrator,
+    build_canonical_post_start_observation,
+)
+from k1link.device_plugins.xgrids_k1.protocol.application_execution import (
+    ApplicationAuthorityLoader,
+)
+from k1link.device_plugins.xgrids_k1.protocol.application_mqtt import (
+    ApplicationCommandOutcomeUnknown,
+    ReviewedApplicationMqttTransport,
+)
+from k1link.device_plugins.xgrids_k1.protocol.modeling_control import (
+    CommandHeaderIdentity,
+    ModelingAction,
+    MountType,
+    RecordMode,
+    ScanMode,
+    encode_modeling_start,
+    encode_modeling_stop,
+)
+from k1link.device_plugins.xgrids_k1.protocol.modeling_safety import (
+    ShadowModelingCommand,
+)
+
+ApplicationControlPhase = Literal[
+    "idle",
+    "connecting",
+    "connection-ready",
+    "workspace-requested",
+    "workspace-ready",
+    "project-requested",
+    "project-ready",
+    "start-requested",
+    "initializing",
+    "scanning",
+    "stop-requested",
+    "stopping",
+    "awaiting-standby-confirmation",
+    "completed",
+    "closed",
+    "failed",
+]
+
+
+TransportFactory = Callable[[str], ReviewedApplicationMqttTransport]
+
+
+@dataclass(frozen=True, slots=True)
+class OperatorPresenceConfirmation:
+    operator_present: Literal[True]
+    owner_controlled_device: Literal[True]
+    lixelgo_closed: Literal[True]
+    battery_storage_confirmed: Literal[True]
+    expected_physical_state_confirmed: Literal[True]
+
+    def checklist(self, action: ModelingAction) -> PhysicalAcceptanceChecklist:
+        return PhysicalAcceptanceChecklist(
+            action=action,
+            operator_present=self.operator_present,
+            owner_controlled_device=self.owner_controlled_device,
+            lixelgo_closed=self.lixelgo_closed,
+            battery_storage_confirmed=self.battery_storage_confirmed,
+            expected_physical_state_confirmed=self.expected_physical_state_confirmed,
+        )
+
+
+class InteractiveApplicationControlSession:
+    """Own one canonical K1 MQTT dialogue across explicit operator UI events.
+
+    Only this background thread touches the MQTT client. UI requests merely
+    release one named checkpoint. No checkpoint is advanced by elapsed time,
+    and neither START nor STOP has an automatic retry path.
+    """
+
+    def __init__(
+        self,
+        authority_loader: ApplicationAuthorityLoader,
+        *,
+        transport_factory: TransportFactory = ReviewedApplicationMqttTransport,
+        epoch_seconds: Callable[[], int] = lambda: int(time.time()),
+    ) -> None:
+        self._authority_loader = authority_loader
+        self._transport_factory = transport_factory
+        self._epoch_seconds = epoch_seconds
+        self._lock = threading.RLock()
+        self._phase: ApplicationControlPhase = "idle"
+        self._host: str | None = None
+        self._timezone_name: str | None = None
+        self._thread: threading.Thread | None = None
+        self._transport: ReviewedApplicationMqttTransport | None = None
+        self._workspace_requested = threading.Event()
+        self._project_requested = threading.Event()
+        self._start_requested = threading.Event()
+        self._stop_requested = threading.Event()
+        self._standby_confirmed = threading.Event()
+        self._cancel_requested = False
+        self._start_confirmation: OperatorPresenceConfirmation | None = None
+        self._stop_confirmation: OperatorPresenceConfirmation | None = None
+        self._project_name: str | None = None
+        self._failure: dict[str, object] | None = None
+        self._dialogue_snapshot: dict[str, object] | None = None
+        self._transport_snapshot: dict[str, object] | None = None
+        self._outcome_unknown = False
+
+    def open(
+        self,
+        *,
+        host: str,
+        timezone_name: str,
+        confirmation: OperatorPresenceConfirmation,
+    ) -> dict[str, object]:
+        # Validate every explicit confirmation before creating a network owner.
+        confirmation.checklist(ModelingAction.START)
+        with self._lock:
+            if self._phase in {"completed", "closed"} or (
+                self._phase == "failed"
+                and self._failure is not None
+                and self._failure.get("safe_to_retry") is True
+            ):
+                self._reset_locked()
+            if self._phase != "idle":
+                raise ApplicationAcceptanceError(
+                    "application control session is already open or requires manual recovery"
+                )
+            self._host = host
+            self._timezone_name = timezone_name
+            self._set_phase_locked("connecting")
+            self._thread = threading.Thread(
+                target=self._run,
+                name="xgrids-k1-canonical-control",
+                daemon=True,
+            )
+            self._thread.start()
+        return self.snapshot()
+
+    def enter_workspace(self) -> dict[str, object]:
+        with self._lock:
+            self._require_phase_locked("connection-ready")
+            self._set_phase_locked("workspace-requested")
+            self._workspace_requested.set()
+        return self.snapshot()
+
+    def open_project_prompt(self) -> dict[str, object]:
+        with self._lock:
+            self._require_phase_locked("workspace-ready")
+            self._set_phase_locked("project-requested")
+            self._project_requested.set()
+        return self.snapshot()
+
+    def request_start(
+        self,
+        *,
+        project_name: str,
+        confirmation: OperatorPresenceConfirmation,
+    ) -> dict[str, object]:
+        with self._lock:
+            self._require_phase_locked("project-ready")
+            self._project_name = project_name
+            self._start_confirmation = confirmation
+            self._set_phase_locked("start-requested")
+            self._start_requested.set()
+        return self.snapshot()
+
+    def request_stop(
+        self,
+        *,
+        confirmation: OperatorPresenceConfirmation,
+    ) -> dict[str, object]:
+        with self._lock:
+            self._require_phase_locked("scanning")
+            self._stop_confirmation = confirmation
+            self._set_phase_locked("stop-requested")
+            self._stop_requested.set()
+        return self.snapshot()
+
+    def confirm_standby(self) -> dict[str, object]:
+        with self._lock:
+            self._require_phase_locked("awaiting-standby-confirmation")
+            if not self._device_ready_for_standby_confirmation_locked():
+                raise ApplicationAcceptanceError(
+                    "K1 has not reported unbound READY after canonical STOP"
+                )
+            self._standby_confirmed.set()
+        return self.snapshot()
+
+    def close_prestart(self) -> dict[str, object]:
+        with self._lock:
+            if self._phase not in {
+                "connection-ready",
+                "workspace-ready",
+                "project-ready",
+            }:
+                raise ApplicationAcceptanceError(
+                    "control session can be closed safely only between pre-START checkpoints"
+                )
+            self._cancel_requested = True
+            transport = self._transport
+        if transport is not None:
+            transport.close()
+        return self.snapshot()
+
+    def close(self) -> None:
+        """Stop the process-owned socket without ever inventing a device STOP."""
+
+        with self._lock:
+            self._cancel_requested = True
+            transport = self._transport
+            thread = self._thread
+        if transport is not None:
+            transport.close()
+        if thread is not None and thread is not threading.current_thread():
+            thread.join(timeout=2.0)
+
+    def snapshot(self) -> dict[str, object]:
+        with self._lock:
+            transport_snapshot = self._live_transport_snapshot_locked()
+            phase = self._phase
+            return {
+                "mode": "interactive-canonical",
+                "state": phase,
+                "control_socket_open": phase
+                not in {"idle", "completed", "closed", "failed"},
+                "can_open": phase in {"idle", "completed", "closed"}
+                or (
+                    phase == "failed"
+                    and self._failure is not None
+                    and self._failure.get("safe_to_retry") is True
+                ),
+                "can_enter_workspace": phase == "connection-ready",
+                "can_prepare_project": phase == "workspace-ready",
+                "can_start": phase == "project-ready",
+                "can_stop": phase == "scanning",
+                "can_confirm_standby": self._device_ready_for_standby_confirmation_locked(),
+                "pending_operator_action": self._pending_operator_action_locked(),
+                "scripted_transitions": False,
+                "automatic_retry": False,
+                "outcome_unknown": self._outcome_unknown,
+                "failure": dict(self._failure) if self._failure is not None else None,
+                "dialogue": (
+                    dict(self._dialogue_snapshot)
+                    if self._dialogue_snapshot is not None
+                    else None
+                ),
+                "transport": transport_snapshot,
+            }
+
+    def _run(self) -> None:
+        executor: PhysicalAcceptanceDialogueExecutor | None = None
+        transport: ReviewedApplicationMqttTransport | None = None
+        try:
+            with self._lock:
+                host = self._host
+                timezone_name = self._timezone_name
+            if host is None or timezone_name is None:
+                raise ApplicationAcceptanceError("control session inputs are unavailable")
+
+            authority = self._authority_loader.load()
+            transport = self._transport_factory(host)
+            with self._lock:
+                self._transport = transport
+            transport.open()
+            orchestrator = ShadowApplicationBootstrapOrchestrator(
+                authority,
+                epoch_seconds=self._epoch_seconds(),
+                timezone_name=timezone_name,
+            )
+            executor = PhysicalAcceptanceDialogueExecutor(transport)
+            binding = executor.run_connection_stage(orchestrator)
+            self._set_phase("connection-ready")
+
+            workspace = executor.wait_for_operator_checkpoint(
+                "workspace-entered",
+                self._workspace_requested.is_set,
+            )
+            executor.run_workspace_entry_stage(orchestrator, workspace)
+            self._set_phase("workspace-ready")
+
+            project = executor.wait_for_operator_checkpoint(
+                "project-prompt-opened",
+                self._project_requested.is_set,
+            )
+            binding = executor.run_project_prompt_stage(orchestrator, project)
+            self._set_phase("project-ready")
+
+            start_checkpoint = executor.wait_for_operator_checkpoint(
+                "start-confirmed",
+                self._start_requested.is_set,
+            )
+            project_name, start_confirmation = self._start_request()
+            start_permit = PhysicalAcceptancePermit(
+                start_confirmation.checklist(ModelingAction.START)
+            )
+            self._set_phase("initializing")
+            executor.execute_canonical_start(
+                self._start_command(authority, binding, project_name),
+                build_canonical_post_start_observation(authority, binding),
+                authority=authority,
+                binding=binding,
+                permit=start_permit,
+                checkpoint=start_checkpoint,
+            )
+            self._set_phase("scanning")
+
+            executor.maintain_active_until_stop_requested(self._stop_requested.is_set)
+            stop_confirmation = self._stop_request()
+            stop_permit = PhysicalAcceptancePermit(
+                stop_confirmation.checklist(ModelingAction.STOP)
+            )
+            self._set_phase("stopping")
+            executor.execute_canonical_stop(
+                self._stop_command(authority, binding),
+                stop_permit,
+            )
+            self._set_phase("awaiting-standby-confirmation")
+            executor.maintain_post_stop_until_standby_confirmed(
+                self._standby_confirmed.is_set
+            )
+            self._set_phase("completed")
+        except Exception as exc:
+            with self._lock:
+                if self._cancel_requested:
+                    self._set_phase_locked("closed")
+                else:
+                    publish_attempts = 0
+                    if transport is not None:
+                        observed_attempts = transport.snapshot().as_dict().get(
+                            "publish_attempts",
+                            0,
+                        )
+                        if isinstance(observed_attempts, int) and not isinstance(
+                            observed_attempts,
+                            bool,
+                        ):
+                            publish_attempts = observed_attempts
+                    outcome_unknown = isinstance(
+                        exc, ApplicationCommandOutcomeUnknown
+                    ) or self._phase in {
+                        "start-requested",
+                        "initializing",
+                        "scanning",
+                        "stop-requested",
+                        "stopping",
+                        "awaiting-standby-confirmation",
+                    }
+                    self._failure = {
+                        "code": type(exc).__name__,
+                        "message": str(exc),
+                        "safe_to_retry": publish_attempts == 0 and not outcome_unknown,
+                    }
+                    self._outcome_unknown = outcome_unknown
+                    self._set_phase_locked("failed")
+        finally:
+            if executor is not None:
+                with self._lock:
+                    self._dialogue_snapshot = executor.snapshot()
+            if transport is not None:
+                try:
+                    with self._lock:
+                        self._transport_snapshot = transport.snapshot().as_dict()
+                finally:
+                    transport.close()
+            with self._lock:
+                self._transport = None
+
+    @staticmethod
+    def _start_command(
+        authority: ApplicationControlAuthority,
+        binding: LiveDeviceControlBinding,
+        project_name: str,
+    ) -> ShadowModelingCommand:
+        return ShadowModelingCommand.from_command(
+            encode_modeling_start(
+                CommandHeaderIdentity(
+                    device_id=binding.vendor_device_id,
+                    openapi_key=authority.openapi_key,
+                ),
+                project_name=project_name,
+                record_mode=RecordMode.RECORD_AND_CALCULATE,
+                scan_mode=ScanMode.LCC,
+                mount_type=MountType.HANDHELD,
+            )
+        )
+
+    @staticmethod
+    def _stop_command(
+        authority: ApplicationControlAuthority,
+        binding: LiveDeviceControlBinding,
+    ) -> ShadowModelingCommand:
+        return ShadowModelingCommand.from_command(
+            encode_modeling_stop(
+                CommandHeaderIdentity(
+                    device_id=binding.vendor_device_id,
+                    openapi_key=authority.openapi_key,
+                )
+            )
+        )
+
+    def _start_request(self) -> tuple[str, OperatorPresenceConfirmation]:
+        with self._lock:
+            if self._project_name is None or self._start_confirmation is None:
+                raise ApplicationAcceptanceError("START request is incomplete")
+            return self._project_name, self._start_confirmation
+
+    def _stop_request(self) -> OperatorPresenceConfirmation:
+        with self._lock:
+            if self._stop_confirmation is None:
+                raise ApplicationAcceptanceError("STOP request is incomplete")
+            return self._stop_confirmation
+
+    def _set_phase(self, phase: ApplicationControlPhase) -> None:
+        with self._lock:
+            self._set_phase_locked(phase)
+
+    def _set_phase_locked(self, phase: ApplicationControlPhase) -> None:
+        self._phase = phase
+
+    def _require_phase_locked(self, expected: ApplicationControlPhase) -> None:
+        if self._phase != expected:
+            raise ApplicationAcceptanceError(
+                f"control action requires {expected}; current state is {self._phase}"
+            )
+
+    def _device_ready_for_standby_confirmation_locked(self) -> bool:
+        if self._phase != "awaiting-standby-confirmation":
+            return False
+        snapshot = self._live_transport_snapshot_locked()
+        return (
+            snapshot.get("latest_device_session_state") == "ready"
+            and snapshot.get("latest_device_project_bound") is False
+        )
+
+    def _live_transport_snapshot_locked(self) -> dict[str, object]:
+        if self._transport is not None:
+            return self._transport.snapshot().as_dict()
+        return (
+            dict(self._transport_snapshot)
+            if self._transport_snapshot is not None
+            else {
+                "state": "not-opened",
+                "automatic_retry": False,
+                "automatic_reconnect": False,
+            }
+        )
+
+    def _pending_operator_action_locked(self) -> str | None:
+        return {
+            "connection-ready": "enter-workspace",
+            "workspace-ready": "prepare-project",
+            "project-ready": "start",
+            "scanning": "stop",
+            "awaiting-standby-confirmation": "confirm-steady-green",
+        }.get(self._phase)
+
+    def _reset_locked(self) -> None:
+        self._phase = "idle"
+        self._host = None
+        self._timezone_name = None
+        self._thread = None
+        self._transport = None
+        self._workspace_requested = threading.Event()
+        self._project_requested = threading.Event()
+        self._start_requested = threading.Event()
+        self._stop_requested = threading.Event()
+        self._standby_confirmed = threading.Event()
+        self._cancel_requested = False
+        self._start_confirmation = None
+        self._stop_confirmation = None
+        self._project_name = None
+        self._failure = None
+        self._dialogue_snapshot = None
+        self._transport_snapshot = None
+        self._outcome_unknown = False
--- a/tests/test_frontend_plugin_boundaries.py
+++ b/tests/test_frontend_plugin_boundaries.py
@ -113,7 +113,7 @@ def test_xgrids_frontend_uses_semantic_acquisition_actions_and_stable_identity()
    assert 'id: "xgrids-k1-rerun-live"' not in runtime_source


-def test_xgrids_live_copy_does_not_claim_software_controls_the_physical_scanner() -> None:
+def test_xgrids_live_copy_exposes_only_explicit_canonical_control_steps() -> None:
    repository_root = Path(__file__).resolve().parents[1]
    connection_source = (
        repository_root
@ -125,8 +125,11 @@ def test_xgrids_live_copy_does_not_claim_software_controls_the_physical_scanner(
        / "K1AcquisitionPipeline.tsx"
    ).read_text("utf-8")

-    assert "Подготовить локальный приём данных" in connection_source
-    assert "Программная команда запуска на K1 не отправляется" in connection_source
+    assert "Подключить управление K1" in connection_source
+    assert "Открыть рабочее пространство K1" in connection_source
+    assert "Сохранить проект и подготовить локальный приём" in connection_source
+    assert "Запустить сканирование K1" in connection_source
+    assert "никаких временных автопереходов и повторов нет" in connection_source
    assert "Остановить локальный приём" in connection_source
    assert "Физическое состояние сканера остаётся неизвестным" in connection_source

--- a/tests/test_plugin_catalog.py
+++ b/tests/test_plugin_catalog.py
@ -88,7 +88,7 @@ def test_repository_catalog_exposes_xgrids_model() -> None:
        item for item in plugins if item["metadata"]["id"] == "nodedc.device.xgrids-lixelkity-k1"
    )
    assert plugin["apiVersion"] == "missioncore.nodedc/v1alpha2"
-    assert plugin["metadata"]["version"] == "0.4.0"
+    assert plugin["metadata"]["version"] == "0.5.0"
    assert plugin["spec"]["hostApiRange"] == "v1alpha2"
    assert plugin["spec"]["compatibilityProfiles"] == [
        {
@ -119,10 +119,13 @@ def test_repository_catalog_exposes_xgrids_model() -> None:
        "application-control.shadow-state",
        "application-control.shadow-arm",
        "application-control.shadow-disarm",
+        "application-control.session.open",
+        "application-control.workspace.enter",
+        "application-control.session.close",
    } <= action_ids
    assert next(item for item in models if item["id"] == "xgrids.lixelkity-k1") == {
        "pluginId": "nodedc.device.xgrids-lixelkity-k1",
-        "pluginVersion": "0.4.0",
+        "pluginVersion": "0.5.0",
        "id": "xgrids.lixelkity-k1",
        "vendor": "XGRIDS",
        "displayName": "XGRIDS LixelKity K1",
--- a/tests/test_xgrids_acquisition_lifecycle.py
+++ b/tests/test_xgrids_acquisition_lifecycle.py
@ -16,6 +16,7 @@ from k1link.device_plugins.xgrids_k1.facade import (
    CameraPreviewSelectRequest,
    CompatibilityAttestationRequest,
    ConnectRequest,
+    OperatorPresenceRequest,
    PrepareAcquisitionRequest,
    ShadowApplicationControlArmRequest,
    StartAcquisitionRequest,
@ -113,6 +114,61 @@ class FakeVisualizationRuntime:
        self.stop()


+class FakeInteractiveControlSession:
+    def __init__(self) -> None:
+        self.state = "workspace-ready"
+        self.start_projects: list[str] = []
+        self.stop_calls = 0
+        self.confirm_calls = 0
+
+    def snapshot(self) -> dict[str, object]:
+        return {
+            "state": self.state,
+            "can_confirm_standby": self.state == "awaiting-standby-confirmation",
+        }
+
+    def open_project_prompt(self) -> dict[str, object]:
+        assert self.state == "workspace-ready"
+        self.state = "project-ready"
+        return self.snapshot()
+
+    def request_start(self, *, project_name: str, confirmation: object) -> dict[str, object]:
+        assert confirmation is not None
+        assert self.state == "project-ready"
+        self.start_projects.append(project_name)
+        self.state = "scanning"
+        return self.snapshot()
+
+    def request_stop(self, *, confirmation: object) -> dict[str, object]:
+        assert confirmation is not None
+        assert self.state == "scanning"
+        self.stop_calls += 1
+        self.state = "awaiting-standby-confirmation"
+        return self.snapshot()
+
+    def confirm_standby(self) -> dict[str, object]:
+        assert self.state == "awaiting-standby-confirmation"
+        self.confirm_calls += 1
+        self.state = "completed"
+        return self.snapshot()
+
+    def close_prestart(self) -> dict[str, object]:
+        self.state = "closed"
+        return self.snapshot()
+
+    def close(self) -> None:
+        self.state = "closed"
+
+
+PHYSICAL_ACCEPTANCE = OperatorPresenceRequest(
+    operator_present=True,
+    owner_controlled_device=True,
+    lixelgo_closed=True,
+    battery_storage_confirmed=True,
+    expected_physical_state_confirmed=True,
+)
+
+
 def service_with_fake_runtime(
    tmp_path: Path,
 ) -> tuple[XgridsK1CompatibilityService, FakeVisualizationRuntime]:
@ -291,6 +347,68 @@ def test_operator_manual_start_is_confirmed_only_by_real_point_data(tmp_path: Pa
    assert acquiring["last_operation"]["result"]["confirmation"] == "point-frame"


+def test_plugin_commanded_acquisition_keeps_start_and_stop_as_explicit_actions(
+    tmp_path: Path,
+) -> None:
+    service, runtime = service_with_fake_runtime(tmp_path)
+    control = FakeInteractiveControlSession()
+    service._application_control_session = control  # type: ignore[assignment]  # noqa: SLF001
+    service._k1_ip = "192.168.1.20"  # noqa: SLF001
+    service._compatibility_attestation = {"profile": "exact"}  # noqa: SLF001
+
+    prepared = service.prepare_acquisition(
+        PrepareAcquisitionRequest(
+            project_name="TEST001",
+            host="192.168.1.20",
+            compatibility_attestation=ATTESTATION,
+        )
+    )
+    acquisition_id = prepared["acquisition"]["acquisition_id"]
+    assert prepared["acquisition"]["control_mode"] == "plugin-commanded"
+    assert control.state == "project-ready"
+    assert runtime.start_calls == []
+
+    with pytest.raises(ValueError, match="подтверждения присутствия"):
+        service.start_acquisition(StartAcquisitionRequest(acquisition_id=acquisition_id))
+    assert control.start_projects == []
+
+    service.start_acquisition(
+        StartAcquisitionRequest(
+            acquisition_id=acquisition_id,
+            physical_acceptance=PHYSICAL_ACCEPTANCE,
+        )
+    )
+    assert control.start_projects == ["TEST001"]
+    runtime.mark_ready()
+    runtime.pcl_frames = 1
+    acquiring = service.state()
+    assert acquiring["acquisition"]["state"] == "acquiring"
+
+    stopping = service.stop_acquisition(
+        StopAcquisitionRequest(
+            acquisition_id=acquisition_id,
+            mode="graceful",
+            physical_acceptance=PHYSICAL_ACCEPTANCE,
+        )
+    )
+    stop_operation = stopping["last_operation"]
+    assert control.stop_calls == 1
+    assert stopping["acquisition"]["state"] == "awaiting_external_stop"
+
+    completed = service.stop_acquisition(
+        StopAcquisitionRequest(
+            acquisition_id=acquisition_id,
+            mode="graceful",
+            operator_confirmed=True,
+            operation_id=stop_operation["operation_id"],
+        )
+    )
+    assert control.stop_calls == 1
+    assert control.confirm_calls == 1
+    assert completed["acquisition"]["state"] == "completed"
+    assert runtime.stop_calls == 1
+
+
 def test_second_start_conflict_does_not_tear_down_start_owner(tmp_path: Path) -> None:
    service, runtime = service_with_fake_runtime(tmp_path)
    prepared = service.prepare_acquisition(
--- a/tests/test_xgrids_application_session.py
+++ b/tests/test_xgrids_application_session.py
@ -0,0 +1,218 @@
+from __future__ import annotations
+
+import threading
+import time
+from dataclasses import dataclass
+from typing import Any
+
+import pytest
+
+from k1link.device_plugins.xgrids_k1.protocol import application_session as session_module
+from k1link.device_plugins.xgrids_k1.protocol.application_bootstrap import (
+    ApplicationControlAuthority,
+    LiveDeviceControlBinding,
+)
+from k1link.device_plugins.xgrids_k1.protocol.application_session import (
+    InteractiveApplicationControlSession,
+    OperatorPresenceConfirmation,
+)
+
+APPLICATION_KEY = "00000000-0000-0000-0000-000000000000"
+
+
+class FakeAuthorityLoader:
+    def __init__(self) -> None:
+        self.calls = 0
+
+    def load(self) -> ApplicationControlAuthority:
+        self.calls += 1
+        return ApplicationControlAuthority(openapi_key=APPLICATION_KEY)
+
+
+@dataclass
+class FakeTransportSnapshot:
+    state: str
+    ready: bool
+
+    def as_dict(self) -> dict[str, object]:
+        return {
+            "state": self.state,
+            "latest_device_session_state": "ready" if self.ready else "scanning",
+            "latest_device_project_bound": not self.ready,
+            "automatic_retry": False,
+            "automatic_reconnect": False,
+        }
+
+
+class FakeTransport:
+    def __init__(self, host: str) -> None:
+        self.host = host
+        self.state = "new"
+        self.ready = True
+
+    def open(self) -> FakeTransportSnapshot:
+        self.state = "ready"
+        return self.snapshot()
+
+    def close(self) -> None:
+        self.state = "closed"
+
+    def snapshot(self) -> FakeTransportSnapshot:
+        return FakeTransportSnapshot(self.state, self.ready)
+
+
+class FakeExecutor:
+    records: list[str] = []
+
+    def __init__(self, transport: FakeTransport) -> None:
+        self.transport = transport
+        self.binding = LiveDeviceControlBinding(
+            vendor_device_id="device-id",
+            device_serial="serial-id",
+            software_version="3.0.2",
+            system_version="3.0.2",
+            device_model="K1",
+            device_type="scanner",
+            is_activated=True,
+        )
+
+    def run_connection_stage(self, _orchestrator: object) -> LiveDeviceControlBinding:
+        self.records.append("connection:1-6")
+        return self.binding
+
+    def wait_for_operator_checkpoint(
+        self,
+        event: str,
+        observed: Any,
+    ) -> str:
+        self.records.append(f"wait:{event}")
+        deadline = time.monotonic() + 2.0
+        while not observed():
+            if time.monotonic() >= deadline:
+                raise TimeoutError(f"test did not release {event}")
+            threading.Event().wait(0.005)
+        return event
+
+    def run_workspace_entry_stage(
+        self,
+        _orchestrator: object,
+        _checkpoint: object,
+    ) -> LiveDeviceControlBinding:
+        self.records.append("workspace:7")
+        return self.binding
+
+    def run_project_prompt_stage(
+        self,
+        _orchestrator: object,
+        _checkpoint: object,
+    ) -> LiveDeviceControlBinding:
+        self.records.append("project:8-10")
+        return self.binding
+
+    def execute_canonical_start(self, *_args: object, **_kwargs: object) -> object:
+        self.records.append("start:11-14")
+        self.transport.ready = False
+        return object()
+
+    def maintain_active_until_stop_requested(self, observed: Any) -> None:
+        self.records.append("wait:stop")
+        while not observed():
+            threading.Event().wait(0.005)
+
+    def execute_canonical_stop(self, *_args: object, **_kwargs: object) -> object:
+        self.records.append("stop")
+        self.transport.ready = True
+        return object()
+
+    def maintain_post_stop_until_standby_confirmed(self, observed: Any) -> None:
+        self.records.append("wait:steady-green")
+        while not observed():
+            threading.Event().wait(0.005)
+
+    def snapshot(self) -> dict[str, object]:
+        return {"records": tuple(self.records), "automatic_retry": False}
+
+
+def _confirmation() -> OperatorPresenceConfirmation:
+    return OperatorPresenceConfirmation(
+        operator_present=True,
+        owner_controlled_device=True,
+        lixelgo_closed=True,
+        battery_storage_confirmed=True,
+        expected_physical_state_confirmed=True,
+    )
+
+
+def _wait_phase(
+    session: InteractiveApplicationControlSession,
+    expected: str,
+) -> dict[str, object]:
+    deadline = time.monotonic() + 2.0
+    while time.monotonic() < deadline:
+        snapshot = session.snapshot()
+        if snapshot["state"] == expected:
+            return snapshot
+        threading.Event().wait(0.005)
+    raise AssertionError(f"session did not reach {expected}: {session.snapshot()}")
+
+
+def test_every_canonical_stage_requires_a_separate_operator_event(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    FakeExecutor.records = []
+    monkeypatch.setattr(
+        session_module,
+        "PhysicalAcceptanceDialogueExecutor",
+        FakeExecutor,
+    )
+    loader = FakeAuthorityLoader()
+    transport = FakeTransport("192.168.1.20")
+    session = InteractiveApplicationControlSession(
+        loader,
+        transport_factory=lambda _host: transport,  # type: ignore[arg-type]
+        epoch_seconds=lambda: 1_752_680_000,
+    )
+
+    session.open(
+        host="192.168.1.20",
+        timezone_name="Europe/Moscow",
+        confirmation=_confirmation(),
+    )
+    _wait_phase(session, "connection-ready")
+    threading.Event().wait(0.02)
+    assert FakeExecutor.records == ["connection:1-6", "wait:workspace-entered"]
+
+    session.enter_workspace()
+    _wait_phase(session, "workspace-ready")
+    assert FakeExecutor.records[-1] == "wait:project-prompt-opened"
+
+    session.open_project_prompt()
+    _wait_phase(session, "project-ready")
+    assert FakeExecutor.records[-1] == "wait:start-confirmed"
+
+    session.request_start(project_name="TEST001", confirmation=_confirmation())
+    _wait_phase(session, "scanning")
+    assert FakeExecutor.records[-1] == "wait:stop"
+
+    session.request_stop(confirmation=_confirmation())
+    standby = _wait_phase(session, "awaiting-standby-confirmation")
+    assert standby["can_confirm_standby"] is True
+    assert FakeExecutor.records[-1] == "wait:steady-green"
+
+    session.confirm_standby()
+    completed = _wait_phase(session, "completed")
+    assert loader.calls == 1
+    assert completed["automatic_retry"] is False
+    assert completed["scripted_transitions"] is False
+    assert FakeExecutor.records == [
+        "connection:1-6",
+        "wait:workspace-entered",
+        "workspace:7",
+        "wait:project-prompt-opened",
+        "project:8-10",
+        "wait:start-confirmed",
+        "start:11-14",
+        "wait:stop",
+        "stop",
+        "wait:steady-green",
+    ]