diff --git a/docs/integrations/codex-subagent-orchestration.md b/docs/integrations/codex-subagent-orchestration.md
index f7ab71dd8a..ef5eb3c5cc 100644
--- a/docs/integrations/codex-subagent-orchestration.md
+++ b/docs/integrations/codex-subagent-orchestration.md
@@ -479,7 +479,9 @@ for the current requester and projects as many as fit the existing context byte
 budget; `authorized_count` and `routes_truncated` make omissions explicit. Each
 route carries only binding/Agent/Todo/runtime
 identity, separate `runtime_readiness` and `readiness` observations, an optional public-safe execution profile and
-one stable `loopx delegation` entrypoint. A separate, explicit
+the existing host owner's `probe_scope` for a supplied non-null probe, and one stable
+`loopx delegation` entrypoint. Full probe/remediation facts are disclosed by
+inspecting that binding, not inlined into the planning budget. A separate, explicit
 `agent-context --phase after_delegate_result` read may include bounded
 operation-status and recovery-required counts. Automatic planning and managed
 return paths do not enumerate the operation journal. These reads do not launch,
@@ -508,6 +510,10 @@ surfaces consume this same capability context, not another route configuration.
 `readiness=unknown`、`preflight=required`，通过现有 `loopx delegation inspect`
 核验权威状态、任务验证与 Turn 准入。未知不等于禁用，ready 运行库也不等于可执行。
 用户的异构偏好影响批次选择，不要求每次心跳重启所有路线，不绕过任一真实门禁。
+投影保留 host owner 非空 probe 的 `probe_scope`，完整 probe 与修复代码通过原
+绑定预检渐进式披露，不额外发起探测或决定准入。`probing_interpreter` 的模块缺失只针对本次检查的解释器，不能
+推断整机没有运行库；未探测的通用适配器仍为 `null/unknown`。修复原绑定环境后必须
+重新核验，不通过创建替代 worker、静默换模型或复用旧任务成功来伪造恢复。
 
 中文：可在现有 `multi_subagent` 能力中配置
 `.loopx/config/delegations.json` 指针，让当前请求 Agent 在规划前看到自己已获授权的
diff --git a/docs/reference/local-delegation.md b/docs/reference/local-delegation.md
index 89bfcba06d..f1863b87be 100644
--- a/docs/reference/local-delegation.md
+++ b/docs/reference/local-delegation.md
@@ -261,6 +261,9 @@ filter used by `delegate list` considers at most six public-safe planning routes
 and byte-bounds the projected subset; `authorized_count` and `routes_truncated`
 make omissions explicit. Managed-host availability comes from the existing Turn host/profile owner;
 unprobed generic adapters are `unknown`, not optimistically ready.
+Routes disclose that owner's `probe_scope` for a supplied non-null probe. Read full
+`runtime_probe` and `unavailable_remediation` observations through
+`delegation inspect` on the same binding; planning keeps its existing byte budget.
 
 This planning projection is read-only. It does not start, resume, accept,
 enumerate operations or periodically poll work. A ready observation is not an
@@ -286,6 +289,9 @@ no legacy Session setting is copied back into the registry automatically.
 启动、恢复、验收或周期轮询工作；需要时可显式读取 `after_delegate_result` 阶段的有界
 operation 状态摘要。ready 和状态计数都不是执行或父级验收回执。清除指针不会撤销
 授权；真正撤销仍须修改 operator binding 文件。
+路由对非空 probe 渐进式披露同一 host owner 的 `probe_scope`。按原绑定读取下述
+`delegation inspect`，可获得完整 `runtime_probe` 和 `unavailable_remediation`；
+规划保持原有字节预算，不内联全部诊断。
 
 ### Recover work without remembered operation ids
 
@@ -354,6 +360,28 @@ Normal start still reads current admission and independently validates output.
 If the existing Turn rejects preflight, inspection reports that error rather than
 manufacturing a launchable result; no request is created.
 
+`executor.runtime_probe` preserves the host's bounded probe scope: a DSH
+`probing_interpreter` result concerns module availability in the interpreter
+running this inspection, not every installation or remote host. A
+`configured_runner` result concerns the explicit runner. A `null` probe means
+this executor was not probed; older previews may omit the optional field.
+`executor.unavailable_remediation` contains bounded operator-action codes from
+the same host owner, not commands or permission to switch providers. For
+`configure_dsh_runtime`, check the original launcher's interpreter and its
+`deepseek-harness` optional dependency or original runner configuration before
+requalification. A successful module probe alone does not prove credentials,
+profile, task acceptance or remote capacity. Inspection exposes no interpreter
+paths, credential/endpoint configuration, or provider payloads.
+
+中文：`executor.runtime_probe` 保留 host 的有界探测范围。DSH 的
+`probing_interpreter` 只说明执行本次检查的解释器是否能找到模块，不代表整机或远端
+所有安装；`configured_runner` 针对已显式配置的 runner。`null` 表示未探测，旧预览
+可以缺省此兼容字段。`executor.unavailable_remediation` 是同一 host owner 提供的
+有界操作代码，不是命令，也不授予切换 provider 的权限。遇到
+`configure_dsh_runtime`，先核对原启动器绑定的解释器及其 `deepseek-harness` 可选依赖
+或原 runner 配置，再重新核验。模块可用不证明凭据、profile、任务验收或远端容量；
+此检查不暴露解释器路径、凭据/endpoint 配置或 provider 原始数据。
+
 Enabled MCP exposes `inspect_execution_binding`; newly enrolled Goal Chat tools
 accept `action=inspect` with `binding_id`. Existing native thread schemas remain
 unchanged. Owners can use **Team execution** directly below the Goal conversation
diff --git a/loopx/control_plane/collaboration/delegation.ts b/loopx/control_plane/collaboration/delegation.ts
index d0f8a326ee..f38451962e 100644
--- a/loopx/control_plane/collaboration/delegation.ts
+++ b/loopx/control_plane/collaboration/delegation.ts
@@ -60,6 +60,34 @@ export function delegationTurnPlanDecision(params: JsonObject): JsonObject {
   };
 }
 
+/** Preserve the host owner's public diagnosis, not its private configuration.
+ * Optional fields keep older host previews compatible; null means unprobed. */
+export function delegationRuntimeFacts(executor: JsonObject): JsonObject {
+  const facts: JsonObject = {};
+  if (Object.hasOwn(executor, "runtime_probe")) {
+    if (executor.runtime_probe === null) facts.runtime_probe = null;
+    else {
+      const probe = requireJsonObject(executor.runtime_probe, "runtime probe");
+      requireThat(probe.schema_version === "managed_runtime_probe_v0"
+        && typeof probe.scope === "string"
+        && ["probing_interpreter", "configured_runner"].includes(probe.scope)
+        && (probe.module === null || (typeof probe.module === "string"
+          && probe.module.length <= 128 && /^[A-Za-z_]\w*(?:\.[A-Za-z_]\w*)*$/.test(probe.module)))
+        && typeof probe.available === "boolean", "invalid runtime probe observation");
+      facts.runtime_probe = {schema_version: probe.schema_version, scope: probe.scope,
+        module: probe.module, available: probe.available};
+    }
+  }
+  if (Object.hasOwn(executor, "unavailable_remediation")) {
+    const remedies = executor.unavailable_remediation;
+    requireThat(Array.isArray(remedies) && remedies.length <= 8
+      && remedies.every(code => typeof code === "string" && /^[a-z][a-z0-9_]{0,79}$/.test(code)),
+    "invalid runtime remediation codes");
+    facts.unavailable_remediation = [...remedies];
+  }
+  return facts;
+}
+
 /** Read the actual dry-run route/profile, never infer readiness from assignment. */
 export function delegationPreflight(params: JsonObject): JsonObject {
   const binding = requireJsonObject(params.binding, "binding identity");
@@ -115,7 +143,8 @@ export function delegationPreflight(params: JsonObject): JsonObject {
     authority_state: "promoted", authority_next_action: "none",
     promotion_from_surface_allowed: false,
     executor: {host: executor.executor, available: executor.available,
-      reason: executor.unavailable_reason, profile: executor.execution_profile},
+      reason: executor.unavailable_reason, profile: executor.execution_profile,
+      ...delegationRuntimeFacts(executor)},
     effects,
     note: "Point-in-time preflight, not an execution permit or evidence of running work. "
       + "Start rechecks admission; inspect original operations before dispatching replacements. "
diff --git a/loopx/control_plane/collaboration/delegation_context.py b/loopx/control_plane/collaboration/delegation_context.py
index 4d8231ad9e..1886379374 100644
--- a/loopx/control_plane/collaboration/delegation_context.py
+++ b/loopx/control_plane/collaboration/delegation_context.py
@@ -65,6 +65,11 @@ def _route(binding: dict[str, Any]) -> dict[str, Any]:
     reason = str(executor.get("unavailable_reason") or "").strip()
     if reason:
         row["reason_code"] = reason
+    # Transport the existing host owner's public observations unchanged. The
+    # Python adapter neither reprobes nor derives another admission decision.
+    for key in ("runtime_probe", "unavailable_remediation"):
+        if key in executor:
+            row[key] = executor[key]
     return row
 
 
diff --git a/loopx/control_plane/subagent_context.ts b/loopx/control_plane/subagent_context.ts
index 31cc76b35e..4a25608ee1 100644
--- a/loopx/control_plane/subagent_context.ts
+++ b/loopx/control_plane/subagent_context.ts
@@ -2,6 +2,7 @@
 import { AGENT_CONTEXT_PHASES, projectAgentContext, type AgentContextProvider } from "./agent_context.ts";
 import type { JsonObject } from "./effect_program.ts";
 import { jsonObject, requireJsonObject } from "./runtime_decode.ts";
+import { delegationRuntimeFacts } from "./collaboration/delegation.ts";
 
 export const subagentContextProvider: AgentContextProvider = {
   hookId: "multi_subagent.coordinator", capabilityId: "multi_subagent", revision: "v5",
@@ -131,6 +132,11 @@ function boundedDelegationContext(value: unknown): JsonObject | null {
     if (executorKind) compact.executor_kind = executorKind;
     if (profile) compact.execution_profile = profile;
     if (reason) compact.reason_code = reason;
+    // Planning discloses scope only; inspect the same binding for full probe
+    // and remedies. Keep the existing route/contribution budgets unchanged.
+    const runtimeFacts = delegationRuntimeFacts(route);
+    const probe = jsonObject(runtimeFacts.runtime_probe);
+    if (probe) compact.probe_scope = probe.scope;
     return [compact];
   }) : [];
   const rawReceipts = jsonObject(source.operation_receipts);
diff --git a/tests/control_plane/test_delegation_context.py b/tests/control_plane/test_delegation_context.py
index f91dbc7fc5..f78012f2e3 100644
--- a/tests/control_plane/test_delegation_context.py
+++ b/tests/control_plane/test_delegation_context.py
@@ -3,6 +3,8 @@
 import json
 from pathlib import Path
 
+import pytest
+
 from loopx.control_plane.agent_context import project_goal_agent_context
 from loopx.control_plane.collaboration import delegation_context
 from loopx.control_plane.quota.live_decision import build_live_quota_should_run_decision
@@ -148,6 +150,52 @@ def operations(_self, *, limit, cursor=None):
     }
 
 
+@pytest.mark.parametrize("runner_configured", [False, True])
+def test_planning_retains_original_probe_scope_and_remediation_without_admission(
+    tmp_path: Path, monkeypatch, runner_configured: bool
+) -> None:
+    from loopx.control_plane.turn_driver.host_binding import managed_executor_binding
+
+    project, registry, runtime = _fixture(tmp_path)
+    calls = []
+    executor = managed_executor_binding(
+        "dsh", environ={}, module_probe=lambda _: False,
+        dsh_runner_configured=runner_configured,
+    )
+
+    def binding(*args, **_kwargs):
+        calls.append(args)
+        return {**executor, "credential_env": "PRIVATE_CREDENTIAL",
+                "endpoint_env": "PRIVATE_ENDPOINT"}
+
+    monkeypatch.setattr(delegation_context, "managed_executor_binding_from_host_args", binding)
+    packet = delegation_context.project_delegation_context(
+        runtime_root=runtime, registry_path=registry, goal_id="goal-a",
+        agent_id="coordinator", project=project, execution_config=".loopx/config/delegations.json",
+    )
+    route = packet["routes"][0]
+    assert len(calls) == 1
+    assert route["runtime_probe"] == executor["runtime_probe"]
+    assert route["unavailable_remediation"] == executor["unavailable_remediation"]
+    assert route["runtime_readiness"] == ("ready" if runner_configured else "blocked")
+    assert route["readiness"] == ("unknown" if runner_configured else "blocked")
+    assert packet["preflight"] == "required"
+    assert "operation_receipts" not in packet
+    assert "PRIVATE_" not in json.dumps(packet)
+
+
+def test_unprobed_generic_route_keeps_explicit_null_probe(tmp_path: Path) -> None:
+    project, registry, runtime = _fixture(tmp_path)
+    packet = delegation_context.project_delegation_context(
+        runtime_root=runtime, registry_path=registry, goal_id="goal-a",
+        agent_id="coordinator", project=project, execution_config=".loopx/config/delegations.json",
+    )
+    route = packet["routes"][0]
+    assert route["runtime_probe"] is None
+    assert route["unavailable_remediation"] == []
+    assert route["runtime_readiness"] == route["readiness"] == "unknown"
+
+
 def test_repeated_live_quota_planning_never_reads_operation_inventory(
     tmp_path: Path, monkeypatch
 ) -> None:
diff --git a/tests/control_plane_ts/agent_context.test.ts b/tests/control_plane_ts/agent_context.test.ts
index cf7147244d..2160f80acb 100644
--- a/tests/control_plane_ts/agent_context.test.ts
+++ b/tests/control_plane_ts/agent_context.test.ts
@@ -182,6 +182,40 @@ test("maximum delegation directory stays within provider budget", () => {
   assert.ok(Buffer.byteLength(JSON.stringify(packet.contributions[0])) <= 2048);
 });
 
+test("planning progressively discloses probe scope without crowding out a second route", () => {
+  const probe = {schema_version: "managed_runtime_probe_v0", scope: "probing_interpreter",
+    module: "deepseek_harness", available: false};
+  const routes = [
+    {binding_id: "managed-evidence/" + "x".repeat(34),
+      agent_id: "managed-worker-" + "x".repeat(12), todo_id: "todo_" + "a".repeat(12), runtime_id: "dsh",
+      readiness: "blocked", runtime_readiness: "blocked", executor_kind: "managed",
+      execution_profile: "deepseek-v4-flash@high", reason_code: "dsh_runtime_unavailable",
+      runtime_probe: {...probe, private_path: "/private/interpreter"},
+      unavailable_remediation: ["configure_dsh_runtime", "select_individual_host"]},
+    {binding_id: "generic-verifier/" + "x".repeat(34),
+      agent_id: "generic-worker-" + "x".repeat(12), todo_id: "todo_" + "b".repeat(12), runtime_id: "generic-cli",
+      readiness: "unknown", runtime_readiness: "unknown", executor_kind: "generic",
+      runtime_probe: null, unavailable_remediation: []},
+  ];
+  for (const phase of ["before_plan", "before_delegate"]) {
+    const packet = evaluateSubagentContext({phase, scope, orchestration: policy, observations: {
+      delegation_context: {schema_version: "loopx_delegation_context_v0", configuration_state: "ready",
+        observed_at: "2026-09-19T04:20:00+00:00", authorized_count: 2, projected_count: 2, routes},
+    }})!;
+    assert.deepEqual(packet.failures, []);
+    const [contribution] = packet.contributions as Record<string, any>[];
+    const context = contribution.facts.delegation_context;
+    assert.equal(context.projected_count, 2);
+    assert.equal(context.preflight, "required");
+    assert.deepEqual(context.routes.map((route: any) => route.probe_scope), ["probing_interpreter", undefined]);
+    assert.deepEqual(context.routes.map((route: any) => route.readiness), ["blocked", "unknown"]);
+    assert.ok(Buffer.byteLength(JSON.stringify(context)) <= 900);
+    assert.ok(Buffer.byteLength(JSON.stringify(contribution)) <= 2048);
+    assert.ok(!JSON.stringify(packet).includes("/private/interpreter"));
+    assert.ok(!JSON.stringify(packet).includes("configure_dsh_runtime"));
+  }
+});
+
 // Rich model identifiers and the complete participation guidance must survive
 // the actual provider budget, not disappear as an isolated provider failure.
 test("coordinator participation guidance survives all bounded lifecycle projections", () => {
diff --git a/tests/control_plane_ts/delegation.test.ts b/tests/control_plane_ts/delegation.test.ts
index 866689a5b6..c95006ea4d 100644
--- a/tests/control_plane_ts/delegation.test.ts
+++ b/tests/control_plane_ts/delegation.test.ts
@@ -96,6 +96,70 @@ test("preflight separates task admission, acceptance binding and runtime availab
   assert.throws(() => delegationPreflight({...params, preview: {...preview, effects: {...effects, host_invoked: true}}}));
 });
 
+const runtimePreflight = (executor: Record<string, unknown>) => delegationPreflight({
+  binding, validation_files_current: true, acceptance: {todo_id: binding.todo_id, state: "ready"},
+  preview: {dry_run: true, status: "preview",
+    effects: {host_invoked: false, state_written: false, quota_spent: false, scheduler_acknowledged: false},
+    route: {kind: "ready_for_host", would_invoke_host: true, selected_todo_id: binding.todo_id},
+    managed_executor: executor},
+});
+
+test("preflight retains scoped runtime facts without leaking host configuration", () => {
+  const probe = {schema_version: "managed_runtime_probe_v0", scope: "probing_interpreter",
+    module: "deepseek_harness", available: false};
+  const remedies = ["configure_dsh_runtime", "select_individual_host"];
+  const result = runtimePreflight({executor: "dsh", available: false,
+    unavailable_reason: "dsh_runtime_unavailable", execution_profile: "explicit-profile",
+    runtime_probe: {...probe, private_path: "/private/interpreter"}, unavailable_remediation: remedies,
+    credential_env: "PRIVATE_CREDENTIAL", endpoint_env: "PRIVATE_ENDPOINT"});
+  assert.equal(result.state, "runtime_unavailable");
+  assert.deepEqual(result.executor, {host: "dsh", available: false,
+    reason: "dsh_runtime_unavailable", profile: "explicit-profile",
+    runtime_probe: probe, unavailable_remediation: remedies});
+  assert.equal(JSON.stringify(result).includes("PRIVATE_"), false);
+  assert.equal(JSON.stringify(result).includes("/private/interpreter"), false);
+  assert.equal(Object.values(result.effects as Record<string, boolean>).some(Boolean), false);
+});
+
+test("runtime probes cannot override credential failure or unprobed generic readiness", () => {
+  const result = runtimePreflight({executor: "dsh", available: false,
+    unavailable_reason: "operator_credential_unconfigured", execution_profile: "explicit-profile",
+    runtime_probe: {schema_version: "managed_runtime_probe_v0", scope: "configured_runner",
+      module: null, available: true},
+    unavailable_remediation: ["configure_operator_credential", "select_individual_host"]});
+  assert.equal(result.state, "runtime_unavailable");
+  assert.equal((result.executor as Record<string, unknown>).available, false);
+  assert.deepEqual((result.executor as Record<string, unknown>).runtime_probe,
+    {schema_version: "managed_runtime_probe_v0", scope: "configured_runner", module: null, available: true});
+  const generic = runtimePreflight({executor: "generic-cli", available: null,
+    unavailable_reason: null, execution_profile: null, runtime_probe: null, unavailable_remediation: []});
+  assert.equal(generic.state, "runtime_unverified");
+  assert.deepEqual(generic.executor, {host: "generic-cli", available: null, reason: null,
+    profile: null, runtime_probe: null, unavailable_remediation: []});
+});
+
+test("malformed scoped runtime facts fail closed; legacy omissions remain compatible", () => {
+  const probe = {schema_version: "managed_runtime_probe_v0", scope: "probing_interpreter",
+    module: "deepseek_harness", available: false};
+  const executor = {executor: "dsh", available: false, unavailable_reason: "dsh_runtime_unavailable",
+    execution_profile: "explicit-profile", runtime_probe: probe, unavailable_remediation: ["configure_dsh_runtime"]};
+  for (const runtime_probe of [false, {}, {...probe, schema_version: "other"},
+    {...probe, scope: "whole_machine"}, {...probe, scope: ["probing_interpreter"]},
+    {...probe, module: "/private/path"},
+    {...probe, available: "false"}]) {
+    assert.throws(() => runtimePreflight({...executor, runtime_probe}), /runtime probe/);
+  }
+  for (const unavailable_remediation of [null, "configure_dsh_runtime", ["/private/path"],
+    ["x".repeat(81)], Array(9).fill("configure_dsh_runtime")]) {
+    assert.throws(() => runtimePreflight({...executor, unavailable_remediation}), /runtime remediation/);
+  }
+  const legacy = runtimePreflight({executor: "dsh", available: true, unavailable_reason: null,
+    execution_profile: "explicit-profile"});
+  assert.equal(legacy.state, "launchable");
+  assert.deepEqual(legacy.executor,
+    {host: "dsh", available: true, reason: null, profile: "explicit-profile"});
+});
+
 test("requester adoption needs accepted downstream use, not reading, revision or prose", () => {
   const artifact = {ref: "result.json", sha256: "a".repeat(64)};
   const source = {operation_id: "source", status: "accepted", artifacts: [artifact]};
diff --git a/tests/test_delegation_preflight.py b/tests/test_delegation_preflight.py
index ac5c09e2fa..f99b8f3c47 100644
--- a/tests/test_delegation_preflight.py
+++ b/tests/test_delegation_preflight.py
@@ -28,6 +28,34 @@ def test_real_cli_preflight_preserves_unknown_runtime_and_state(service):
     assert result["turn_eligible"] and result["acceptance_ready"]
     assert result["executor"]["host"] == "generic-cli"
     assert result["executor"]["available"] is None
+    assert result["executor"]["runtime_probe"] is None
+    assert result["executor"]["unavailable_remediation"] == []
+    assert not any(result["effects"].values())
+    assert runner.registry.read_bytes() == before
+    assert not (root / "host-started").exists()
+    assert not list(runner.path("inventory").parent.glob("*.json"))
+    assert not list((root / "runtime" / "goals").glob("*/turns/*.json"))
+
+
+def test_real_cli_dsh_preflight_preserves_interpreter_probe_without_launch(service):
+    root, runner = service
+    config = json.loads(runner.config.read_text())
+    config["bindings"][0]["host_args"] = ["--host", "dsh"]
+    runner.config.write_text(json.dumps(config))
+    before = runner.registry.read_bytes()
+    status, result = cli(runner, "inspect", "--binding-id", "analysis")
+    assert status == 0, result
+    executor = result["executor"]
+    probe = executor["runtime_probe"]
+    assert probe["schema_version"] == "managed_runtime_probe_v0"
+    assert probe["scope"] == "probing_interpreter"
+    assert probe["module"] == "deepseek_harness"
+    assert isinstance(probe["available"], bool)
+    if not probe["available"]:
+        assert executor["available"] is False
+        assert executor["reason"] == "dsh_runtime_unavailable"
+        assert executor["unavailable_remediation"] == ["configure_dsh_runtime", "select_individual_host"]
+    assert "credential_env" not in executor and "endpoint_env" not in executor
     assert not any(result["effects"].values())
     assert runner.registry.read_bytes() == before
     assert not (root / "host-started").exists()
@@ -348,6 +376,8 @@ def test_selected_codex_managed_agent_profile_is_projected_exactly(service):
         "available": None,
         "reason": None,
         "profile": "gpt-5.6-sol@xhigh",
+        "runtime_probe": None,
+        "unavailable_remediation": [],
     }
     assert result["state"] == "runtime_unverified"
     assert not any(result["effects"].values())