diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3394faac64a..9caea2f1335 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ Docs: https://docs.openclaw.ai
 
 ### Changes
 
+- Agents/compaction: preserve scoped background exec/process session references across embedded compaction and after-turn runtime contexts without exposing sessions from unrelated scopes. Fixes #79284. (#79307) Thanks @TurboTheTurtle.
+
 ### Fixes
 
 - Plugin SDK: keep activated linked plugin runtime facades loadable when bundled plugin fallback is disabled. Thanks @shakkernerd.
diff --git a/src/agents/bash-process-references.ts b/src/agents/bash-process-references.ts
new file mode 100644
index 00000000000..08d7c109a01
--- /dev/null
+++ b/src/agents/bash-process-references.ts
@@ -0,0 +1,74 @@
+import { formatDurationCompact } from "../infra/format-time/format-duration.js";
+import { listRunningSessions } from "./bash-process-registry.js";
+import { deriveSessionName } from "./bash-tools.shared.js";
+
+const DEFAULT_ACTIVE_PROCESS_LIMIT = 8;
+const MAX_COMMAND_LABEL_CHARS = 140;
+
+export type ActiveProcessSessionReference = {
+  sessionId: string;
+  status: "running";
+  pid?: number;
+  startedAt: number;
+  runtimeMs: number;
+  cwd?: string;
+  command: string;
+  name: string;
+  tail?: string;
+  truncated: boolean;
+};
+
+function truncate(value: string, maxChars: number): string {
+  if (value.length <= maxChars) {
+    return value;
+  }
+  if (maxChars <= 1) {
+    return value.slice(0, maxChars);
+  }
+  return `${value.slice(0, Math.max(0, maxChars - 3))}...`;
+}
+
+export function listActiveProcessSessionReferences(params: {
+  scopeKey?: string;
+  now?: number;
+  limit?: number;
+}): ActiveProcessSessionReference[] {
+  const scopeKey = params.scopeKey?.trim();
+  if (!scopeKey) {
+    return [];
+  }
+  const now = params.now ?? Date.now();
+  const limit =
+    typeof params.limit === "number" && Number.isFinite(params.limit) && params.limit > 0
+      ? Math.floor(params.limit)
+      : DEFAULT_ACTIVE_PROCESS_LIMIT;
+  return listRunningSessions()
+    .filter((session) => session.backgrounded)
+    .filter((session) => session.scopeKey === scopeKey)
+    .toSorted((left, right) => right.startedAt - left.startedAt)
+    .slice(0, limit)
+    .map((session) => ({
+      sessionId: session.id,
+      status: "running" as const,
+      pid: session.pid ?? session.child?.pid,
+      startedAt: session.startedAt,
+      runtimeMs: Math.max(0, now - session.startedAt),
+      cwd: session.cwd,
+      command: session.command,
+      name: truncate(
+        deriveSessionName(session.command) || session.command,
+        MAX_COMMAND_LABEL_CHARS,
+      ),
+      tail: session.tail,
+      truncated: session.truncated,
+    }));
+}
+
+export function formatActiveProcessSessionReference(
+  session: ActiveProcessSessionReference,
+): string {
+  const runtime = formatDurationCompact(session.runtimeMs) ?? "unknown";
+  const pid = typeof session.pid === "number" ? ` pid=${session.pid}` : "";
+  const cwd = session.cwd ? ` cwd=${session.cwd}` : "";
+  return `${session.sessionId} ${session.status} ${runtime}${pid}${cwd} :: ${session.name}`;
+}
diff --git a/src/agents/pi-embedded-runner/compact.hooks.harness.ts b/src/agents/pi-embedded-runner/compact.hooks.harness.ts
index 663f9e90d65..b7b6473a4aa 100644
--- a/src/agents/pi-embedded-runner/compact.hooks.harness.ts
+++ b/src/agents/pi-embedded-runner/compact.hooks.harness.ts
@@ -470,6 +470,7 @@ export async function loadCompactHooksHarness(): Promise<{
 
   vi.doMock("./lanes.js", () => ({
     resolveSessionLane: vi.fn(() => "test-session-lane"),
+    resolveEmbeddedSessionLane: vi.fn(() => "test-session-lane"),
     resolveGlobalLane: vi.fn(() => "test-global-lane"),
   }));
 
@@ -513,6 +514,17 @@ export async function loadCompactHooksHarness(): Promise<{
 
   vi.doMock("../pi-tools.js", () => ({
     createOpenClawCodingTools: createOpenClawCodingToolsMock,
+    resolveProcessToolScopeKey: ({
+      scopeKey,
+      sessionKey,
+      sessionId,
+      agentId,
+    }: {
+      scopeKey?: string;
+      sessionKey?: string;
+      sessionId?: string;
+      agentId?: string;
+    }) => scopeKey ?? sessionKey ?? sessionId ?? (agentId ? `agent:${agentId}` : undefined),
   }));
 
   vi.doMock("./replay-history.js", () => ({
diff --git a/src/agents/pi-embedded-runner/compact.ts b/src/agents/pi-embedded-runner/compact.ts
index db91cf8d103..2ed90892bd6 100644
--- a/src/agents/pi-embedded-runner/compact.ts
+++ b/src/agents/pi-embedded-runner/compact.ts
@@ -39,6 +39,7 @@ import {
   resolveRunModelFallbacksOverride,
   resolveSessionAgentIds,
 } from "../agent-scope.js";
+import { listActiveProcessSessionReferences } from "../bash-process-references.js";
 import {
   makeBootstrapWarn,
   resolveBootstrapContextForRun,
@@ -82,7 +83,7 @@ import {
   applyPiCompactionSettingsFromConfig,
   isSilentOverflowProneModel,
 } from "../pi-settings.js";
-import { createOpenClawCodingTools } from "../pi-tools.js";
+import { createOpenClawCodingTools, resolveProcessToolScopeKey } from "../pi-tools.js";
 import { wrapStreamFnTextTransforms } from "../plugin-text-transforms.js";
 import { registerProviderStreamForModel } from "../provider-stream.js";
 import { collectRuntimeChannelCapabilities } from "../runtime-capabilities.js";
@@ -834,6 +835,12 @@ async function compactEmbeddedPiSessionDirectOnce(
       channel: runtimeChannel,
       capabilities: runtimeCapabilities,
       channelActions,
+      activeProcessSessions: listActiveProcessSessionReferences({
+        scopeKey: resolveProcessToolScopeKey({
+          sessionKey: sandboxSessionKey,
+          agentId: sessionAgentId,
+        }),
+      }),
     };
     const sandboxInfo = buildEmbeddedSandboxInfo(sandbox, params.bashElevated);
     const reasoningTagHint = isReasoningTagProvider(provider, {
diff --git a/src/agents/pi-embedded-runner/compaction-runtime-context.test.ts b/src/agents/pi-embedded-runner/compaction-runtime-context.test.ts
index ea22b0646ce..b14359419b7 100644
--- a/src/agents/pi-embedded-runner/compaction-runtime-context.test.ts
+++ b/src/agents/pi-embedded-runner/compaction-runtime-context.test.ts
@@ -1,11 +1,17 @@
-import { describe, expect, it } from "vitest";
+import { afterEach, describe, expect, it } from "vitest";
 import type { OpenClawConfig } from "../../config/config.js";
+import { addSession, resetProcessRegistryForTests } from "../bash-process-registry.js";
+import { createProcessSessionFixture } from "../bash-process-registry.test-helpers.js";
 import {
   buildEmbeddedCompactionRuntimeContext,
   resolveEmbeddedCompactionTarget,
 } from "./compaction-runtime-context.js";
 
 describe("buildEmbeddedCompactionRuntimeContext", () => {
+  afterEach(() => {
+    resetProcessRegistryForTests();
+  });
+
   it("preserves sender and current message routing for compaction", () => {
     const result = buildEmbeddedCompactionRuntimeContext({
       sessionKey: "agent:main:thread:1",
@@ -120,6 +126,62 @@ describe("buildEmbeddedCompactionRuntimeContext", () => {
     expect(result.authProfileId).toBe("ollama:default");
   });
 
+  it("preserves scoped active process session references for compaction", () => {
+    const active = createProcessSessionFixture({
+      id: "sess-active",
+      command: "sleep 600",
+      backgrounded: true,
+      pid: 1234,
+      startedAt: 1_000,
+    });
+    active.scopeKey = "agent:main:thread:1";
+    const other = createProcessSessionFixture({
+      id: "sess-other",
+      command: "sleep 600",
+      backgrounded: true,
+    });
+    other.scopeKey = "agent:other";
+    addSession(active);
+    addSession(other);
+
+    const result = buildEmbeddedCompactionRuntimeContext({
+      sessionKey: "agent:main:thread:1",
+      workspaceDir: "/tmp/workspace",
+      agentDir: "/tmp/agent",
+      config: {} as OpenClawConfig,
+    });
+
+    expect(result.activeProcessSessions).toEqual([
+      expect.objectContaining({
+        sessionId: "sess-active",
+        status: "running",
+        command: "sleep 600",
+        pid: 1234,
+      }),
+    ]);
+    expect(result.activeProcessSessions).not.toEqual(
+      expect.arrayContaining([expect.objectContaining({ sessionId: "sess-other" })]),
+    );
+  });
+
+  it("omits active process session references when no safe scope is available", () => {
+    const active = createProcessSessionFixture({
+      id: "sess-active",
+      command: "sleep 600",
+      backgrounded: true,
+    });
+    active.scopeKey = "agent:main:thread:1";
+    addSession(active);
+
+    const result = buildEmbeddedCompactionRuntimeContext({
+      workspaceDir: "/tmp/workspace",
+      agentDir: "/tmp/agent",
+      config: {} as OpenClawConfig,
+    });
+
+    expect(result.activeProcessSessions).toBeUndefined();
+  });
+
   it("applies runtime defaults when resolving the effective compaction target", () => {
     expect(
       resolveEmbeddedCompactionTarget({
diff --git a/src/agents/pi-embedded-runner/compaction-runtime-context.ts b/src/agents/pi-embedded-runner/compaction-runtime-context.ts
index 636fb72b932..a490bc9e5d4 100644
--- a/src/agents/pi-embedded-runner/compaction-runtime-context.ts
+++ b/src/agents/pi-embedded-runner/compaction-runtime-context.ts
@@ -1,6 +1,10 @@
 import type { SourceReplyDeliveryMode } from "../../auto-reply/get-reply-options.types.js";
 import type { ReasoningLevel, ThinkLevel } from "../../auto-reply/thinking.js";
 import type { OpenClawConfig } from "../../config/types.openclaw.js";
+import {
+  listActiveProcessSessionReferences,
+  type ActiveProcessSessionReference,
+} from "../bash-process-references.js";
 import type { ExecElevatedDefaults } from "../bash-tools.js";
 import type { SkillSnapshot } from "../skills.js";
 
@@ -28,6 +32,7 @@ export type EmbeddedCompactionRuntimeContext = {
   extraSystemPrompt?: string;
   sourceReplyDeliveryMode?: SourceReplyDeliveryMode;
   ownerNumbers?: string[];
+  activeProcessSessions?: ActiveProcessSessionReference[];
 };
 
 /**
@@ -95,6 +100,7 @@ export function buildEmbeddedCompactionRuntimeContext(params: {
   extraSystemPrompt?: string;
   sourceReplyDeliveryMode?: SourceReplyDeliveryMode;
   ownerNumbers?: string[];
+  activeProcessSessions?: ActiveProcessSessionReference[];
 }): EmbeddedCompactionRuntimeContext {
   const resolved = resolveEmbeddedCompactionTarget({
     config: params.config,
@@ -102,6 +108,12 @@ export function buildEmbeddedCompactionRuntimeContext(params: {
     modelId: params.modelId,
     authProfileId: params.authProfileId,
   });
+  const processScopeKey = params.sessionKey?.trim();
+  const activeProcessSessions =
+    params.activeProcessSessions ??
+    listActiveProcessSessionReferences({
+      scopeKey: processScopeKey,
+    });
   return {
     sessionKey: params.sessionKey ?? undefined,
     messageChannel: params.messageChannel ?? undefined,
@@ -126,5 +138,6 @@ export function buildEmbeddedCompactionRuntimeContext(params: {
     extraSystemPrompt: params.extraSystemPrompt,
     sourceReplyDeliveryMode: params.sourceReplyDeliveryMode,
     ownerNumbers: params.ownerNumbers,
+    ...(activeProcessSessions.length > 0 ? { activeProcessSessions } : {}),
   };
 }
diff --git a/src/agents/pi-embedded-runner/run.overflow-compaction.harness.ts b/src/agents/pi-embedded-runner/run.overflow-compaction.harness.ts
index b26e2e5c643..f8f83170c9c 100644
--- a/src/agents/pi-embedded-runner/run.overflow-compaction.harness.ts
+++ b/src/agents/pi-embedded-runner/run.overflow-compaction.harness.ts
@@ -548,6 +548,7 @@ export async function loadRunOverflowCompactionHarness(): Promise<{
 
   vi.doMock("../../process/command-queue.js", () => ({
     enqueueCommandInLane: vi.fn((_lane: string, task: () => unknown) => task()),
+    clearCommandLane: vi.fn(() => 0),
   }));
 
   vi.doMock("../../utils/message-channel.js", () => ({
@@ -569,6 +570,7 @@ export async function loadRunOverflowCompactionHarness(): Promise<{
 
   vi.doMock("./lanes.js", () => ({
     resolveSessionLane: vi.fn(() => "session-lane"),
+    resolveEmbeddedSessionLane: vi.fn(() => "session-lane"),
     resolveGlobalLane: vi.fn(() => "global-lane"),
   }));
 
diff --git a/src/agents/pi-embedded-runner/run.ts b/src/agents/pi-embedded-runner/run.ts
index 93cf14dbf8a..a2d33f76204 100644
--- a/src/agents/pi-embedded-runner/run.ts
+++ b/src/agents/pi-embedded-runner/run.ts
@@ -36,6 +36,7 @@ import {
   markAuthProfileGood,
   markAuthProfileUsed,
 } from "../auth-profiles.js";
+import { listActiveProcessSessionReferences } from "../bash-process-references.js";
 import {
   resolveSessionKeyForRequest,
   resolveStoredSessionKeyForSessionId,
@@ -81,6 +82,7 @@ import {
   parseImageSizeError,
   pickFallbackThinkingLevel,
 } from "../pi-embedded-helpers.js";
+import { resolveProcessToolScopeKey } from "../pi-tools.js";
 import { resolveProviderIdForAuth } from "../provider-auth-aliases.js";
 import { runAgentCleanupStep } from "../run-cleanup-timeout.js";
 import { buildAgentRuntimeAuthPlan } from "../runtime-plan/auth.js";
@@ -1495,6 +1497,13 @@ export async function runEmbeddedPiAgent(
                     extraSystemPrompt: params.extraSystemPrompt,
                     sourceReplyDeliveryMode: params.sourceReplyDeliveryMode,
                     ownerNumbers: params.ownerNumbers,
+                    activeProcessSessions: listActiveProcessSessionReferences({
+                      scopeKey: resolveProcessToolScopeKey({
+                        sessionKey: params.sandboxSessionKey?.trim() || params.sessionKey,
+                        sessionId: activeSessionId,
+                        agentId: sessionAgentId,
+                      }),
+                    }),
                   }),
                   ...resolveContextEngineCapabilities({
                     config: params.config,
@@ -1660,6 +1669,13 @@ export async function runEmbeddedPiAgent(
                     extraSystemPrompt: params.extraSystemPrompt,
                     sourceReplyDeliveryMode: params.sourceReplyDeliveryMode,
                     ownerNumbers: params.ownerNumbers,
+                    activeProcessSessions: listActiveProcessSessionReferences({
+                      scopeKey: resolveProcessToolScopeKey({
+                        sessionKey: params.sandboxSessionKey?.trim() || params.sessionKey,
+                        sessionId: activeSessionId,
+                        agentId: sessionAgentId,
+                      }),
+                    }),
                   }),
                   ...resolveContextEngineCapabilities({
                     config: params.config,
diff --git a/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.test.ts b/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.test.ts
index eca6a3d8969..79dea72d609 100644
--- a/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.test.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.test.ts
@@ -2,10 +2,20 @@ import { describe, expect, it, vi } from "vitest";
 
 const musicGenerationTaskStatusMocks = vi.hoisted(() => ({
   buildActiveMusicGenerationTaskPromptContextForSession: vi.fn(),
+  buildMusicGenerationTaskStatusDetails: vi.fn(() => ({})),
+  buildMusicGenerationTaskStatusText: vi.fn(() => "Music generation task status"),
+  findActiveMusicGenerationTaskForSession: vi.fn(),
+  MUSIC_GENERATION_TASK_KIND: "music_generation",
 }));
 
 const videoGenerationTaskStatusMocks = vi.hoisted(() => ({
   buildActiveVideoGenerationTaskPromptContextForSession: vi.fn(),
+  buildVideoGenerationTaskStatusDetails: vi.fn(() => ({})),
+  buildVideoGenerationTaskStatusText: vi.fn(() => "Video generation task status"),
+  findActiveVideoGenerationTaskForSession: vi.fn(),
+  getVideoGenerationTaskProviderId: vi.fn(),
+  isActiveVideoGenerationTask: vi.fn(() => false),
+  VIDEO_GENERATION_TASK_KIND: "video_generation",
 }));
 
 const hostHookStateMocks = vi.hoisted(() => ({
diff --git a/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.ts b/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.ts
index a09bda75db9..6868148a8fa 100644
--- a/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.prompt-helpers.ts
@@ -14,8 +14,10 @@ import type {
 } from "../../../plugins/types.js";
 import { isCronSessionKey, isSubagentSessionKey } from "../../../routing/session-key.js";
 import { joinPresentTextSegments } from "../../../shared/text/join-segments.js";
+import { listActiveProcessSessionReferences } from "../../bash-process-references.js";
 import { resolveHeartbeatPromptForSystemPrompt } from "../../heartbeat-system-prompt.js";
 import { buildActiveMusicGenerationTaskPromptContextForSession } from "../../music-generation-task-status.js";
+import { resolveProcessToolScopeKey } from "../../pi-tools.js";
 import { prependSystemPromptAdditionAfterCacheBoundary } from "../../system-prompt-cache-boundary.js";
 import { resolveEffectiveToolFsWorkspaceOnly } from "../../tool-fs-policy.js";
 import { derivePromptTokens, type NormalizedUsage } from "../../usage.js";
@@ -487,30 +489,35 @@ export function resolveAttemptPrependSystemContext(params: {
   ]);
 }
 
+type AfterTurnRuntimeContextAttempt = Pick<
+  EmbeddedRunAttemptParams,
+  | "sessionKey"
+  | "sandboxSessionKey"
+  | "messageChannel"
+  | "messageProvider"
+  | "agentAccountId"
+  | "currentChannelId"
+  | "currentThreadTs"
+  | "currentMessageId"
+  | "config"
+  | "skillsSnapshot"
+  | "senderIsOwner"
+  | "senderId"
+  | "provider"
+  | "modelId"
+  | "thinkLevel"
+  | "reasoningLevel"
+  | "bashElevated"
+  | "extraSystemPrompt"
+  | "ownerNumbers"
+  | "authProfileId"
+> & {
+  sessionId?: EmbeddedRunAttemptParams["sessionId"];
+};
+
 /** Build runtime context passed into context-engine afterTurn hooks. */
 export function buildAfterTurnRuntimeContext(params: {
-  attempt: Pick<
-    EmbeddedRunAttemptParams,
-    | "sessionKey"
-    | "messageChannel"
-    | "messageProvider"
-    | "agentAccountId"
-    | "currentChannelId"
-    | "currentThreadTs"
-    | "currentMessageId"
-    | "config"
-    | "skillsSnapshot"
-    | "senderIsOwner"
-    | "senderId"
-    | "provider"
-    | "modelId"
-    | "thinkLevel"
-    | "reasoningLevel"
-    | "bashElevated"
-    | "extraSystemPrompt"
-    | "ownerNumbers"
-    | "authProfileId"
-  >;
+  attempt: AfterTurnRuntimeContextAttempt;
   workspaceDir: string;
   agentDir: string;
   activeAgentId?: string;
@@ -542,6 +549,13 @@ export function buildAfterTurnRuntimeContext(params: {
       bashElevated: params.attempt.bashElevated,
       extraSystemPrompt: params.attempt.extraSystemPrompt,
       ownerNumbers: params.attempt.ownerNumbers,
+      activeProcessSessions: listActiveProcessSessionReferences({
+        scopeKey: resolveProcessToolScopeKey({
+          sessionKey: params.attempt.sandboxSessionKey?.trim() || params.attempt.sessionKey,
+          sessionId: params.attempt.sessionId,
+          agentId: params.activeAgentId,
+        }),
+      }),
     }),
     ...resolveContextEngineCapabilities({
       config: params.attempt.config,
diff --git a/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.test-support.ts b/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.test-support.ts
index a195beace78..6c757295126 100644
--- a/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.test-support.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.spawn-workspace.test-support.ts
@@ -541,6 +541,17 @@ vi.mock("../../cache-trace.js", () => ({
 vi.mock("../../pi-tools.js", () => ({
   createOpenClawCodingTools: (options?: { workspaceDir?: string; spawnWorkspaceDir?: string }) =>
     hoisted.createOpenClawCodingToolsMock(options),
+  resolveProcessToolScopeKey: ({
+    scopeKey,
+    sessionKey,
+    sessionId,
+    agentId,
+  }: {
+    scopeKey?: string;
+    sessionKey?: string;
+    sessionId?: string;
+    agentId?: string;
+  }) => scopeKey ?? sessionKey ?? sessionId ?? (agentId ? `agent:${agentId}` : undefined),
   resolveToolLoopDetectionConfig: () => undefined,
 }));
 
diff --git a/src/agents/pi-embedded-runner/run/attempt.test.ts b/src/agents/pi-embedded-runner/run/attempt.test.ts
index 641ba1428a7..07c6a5d70d9 100644
--- a/src/agents/pi-embedded-runner/run/attempt.test.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.test.ts
@@ -5,6 +5,8 @@ vi.mock("../context-engine-capabilities.js", () => ({
   resolveContextEngineCapabilities: async () => ({ llm: undefined }),
 }));
 import type { OpenClawConfig } from "../../../config/config.js";
+import { addSession, resetProcessRegistryForTests } from "../../bash-process-registry.js";
+import { createProcessSessionFixture } from "../../bash-process-registry.test-helpers.js";
 import { SYSTEM_PROMPT_CACHE_BOUNDARY } from "../../system-prompt-cache-boundary.js";
 import { buildAgentSystemPrompt } from "../../system-prompt.js";
 import { resolveBootstrapContextTargets } from "./attempt-bootstrap-routing.js";
@@ -3232,6 +3234,58 @@ describe("prependSystemPromptAddition", () => {
 });
 
 describe("buildAfterTurnRuntimeContext", () => {
+  it("preserves sessionId-scoped active process sessions for after-turn context", () => {
+    resetProcessRegistryForTests();
+    try {
+      const active = createProcessSessionFixture({
+        id: "sess-session-id",
+        command: "sleep 600",
+        backgrounded: true,
+        pid: 1234,
+      });
+      active.scopeKey = "session-123";
+      addSession(active);
+      const other = createProcessSessionFixture({
+        id: "sess-other",
+        command: "sleep 600",
+        backgrounded: true,
+      });
+      other.scopeKey = "agent:main";
+      addSession(other);
+
+      const legacy = buildAfterTurnRuntimeContext({
+        attempt: {
+          sessionId: "session-123",
+          config: {} as OpenClawConfig,
+          skillsSnapshot: undefined,
+          senderIsOwner: true,
+          provider: "openai-codex",
+          modelId: "gpt-5.4",
+          thinkLevel: "off",
+          reasoningLevel: "on",
+          extraSystemPrompt: "extra",
+          ownerNumbers: ["+15555550123"],
+        },
+        workspaceDir: "/tmp/workspace",
+        agentDir: "/tmp/agent",
+        activeAgentId: "main",
+      });
+
+      expect(legacy.activeProcessSessions).toEqual([
+        expect.objectContaining({
+          sessionId: "sess-session-id",
+          command: "sleep 600",
+          pid: 1234,
+        }),
+      ]);
+      expect(legacy.activeProcessSessions).not.toEqual(
+        expect.arrayContaining([expect.objectContaining({ sessionId: "sess-other" })]),
+      );
+    } finally {
+      resetProcessRegistryForTests();
+    }
+  });
+
   it("uses primary model when compaction.model is not set", () => {
     const legacy = buildAfterTurnRuntimeContext({
       attempt: {
diff --git a/src/agents/pi-embedded-runner/run/attempt.ts b/src/agents/pi-embedded-runner/run/attempt.ts
index 283a02851d2..fede114ac5e 100644
--- a/src/agents/pi-embedded-runner/run/attempt.ts
+++ b/src/agents/pi-embedded-runner/run/attempt.ts
@@ -61,6 +61,7 @@ import { normalizeMessageChannel } from "../../../utils/message-channel.js";
 import { isReasoningTagProvider } from "../../../utils/provider-utils.js";
 import { resolveAgentDir, resolveSessionAgentIds } from "../../agent-scope.js";
 import { createAnthropicPayloadLogger } from "../../anthropic-payload-log.js";
+import { listActiveProcessSessionReferences } from "../../bash-process-references.js";
 import {
   analyzeBootstrapBudget,
   buildBootstrapPromptWarning,
@@ -120,7 +121,11 @@ import {
   findClientToolNameConflicts,
   toClientToolDefinitions,
 } from "../../pi-tool-definition-adapter.js";
-import { createOpenClawCodingTools, resolveToolLoopDetectionConfig } from "../../pi-tools.js";
+import {
+  createOpenClawCodingTools,
+  resolveProcessToolScopeKey,
+  resolveToolLoopDetectionConfig,
+} from "../../pi-tools.js";
 import {
   resolveEffectiveToolPolicy,
   resolveGroupToolPolicy,
@@ -1218,6 +1223,12 @@ export async function runEmbeddedAttempt(
       agentId: sessionAgentId,
     });
     const defaultModelLabel = `${defaultModelRef.provider}/${defaultModelRef.model}`;
+    const activeProcessSessions = listActiveProcessSessionReferences({
+      scopeKey: resolveProcessToolScopeKey({
+        sessionKey: sandboxSessionKey,
+        agentId: sessionAgentId,
+      }),
+    });
     const { runtimeInfo, userTimezone, userTime, userTimeFormat } = buildSystemPromptParams({
       config: params.config,
       agentId: sessionAgentId,
@@ -1234,6 +1245,7 @@ export async function runEmbeddedAttempt(
         channel: runtimeChannel,
         capabilities: runtimeCapabilities,
         channelActions,
+        activeProcessSessions,
       },
     });
     const isDefaultAgent = sessionAgentId === defaultAgentId;
diff --git a/src/agents/pi-embedded-runner/system-prompt.test.ts b/src/agents/pi-embedded-runner/system-prompt.test.ts
index 07b513db4c8..84285ae5fea 100644
--- a/src/agents/pi-embedded-runner/system-prompt.test.ts
+++ b/src/agents/pi-embedded-runner/system-prompt.test.ts
@@ -152,4 +152,40 @@ describe("buildEmbeddedSystemPrompt", () => {
 
     expect(prompt).not.toContain("## Memory Recall");
   });
+
+  it("includes active background process references in the embedded prompt", () => {
+    const prompt = buildEmbeddedSystemPrompt({
+      workspaceDir: "/tmp/openclaw",
+      reasoningTagHint: false,
+      runtimeInfo: {
+        host: "local",
+        os: "darwin",
+        arch: "arm64",
+        node: process.version,
+        model: "gpt-5.4",
+        provider: "openai",
+        activeProcessSessions: [
+          {
+            sessionId: "sess-active",
+            status: "running",
+            startedAt: 0,
+            runtimeMs: 5_000,
+            command: "sleep 600",
+            name: "sleep 600",
+            cwd: "/tmp/work",
+            pid: 1234,
+            truncated: false,
+          },
+        ],
+      },
+      tools: [],
+      modelAliasLines: [],
+      userTimezone: "UTC",
+    });
+
+    expect(prompt).toContain("Active background exec sessions in this scope:");
+    expect(prompt).toContain("sess-active running pid=1234 cwd=/tmp/work :: sleep 600");
+    expect(prompt).toContain("process tool with a sessionId");
+    expect(prompt).toContain("process list");
+  });
 });
diff --git a/src/agents/pi-embedded-runner/system-prompt.ts b/src/agents/pi-embedded-runner/system-prompt.ts
index 7b5166ed389..d3ebe7dec88 100644
--- a/src/agents/pi-embedded-runner/system-prompt.ts
+++ b/src/agents/pi-embedded-runner/system-prompt.ts
@@ -4,6 +4,7 @@ import type { SourceReplyDeliveryMode } from "../../auto-reply/get-reply-options
 import type { SubagentDelegationMode } from "../../config/types.agent-defaults.js";
 import type { MemoryCitationsMode } from "../../config/types.memory.js";
 import type { OpenClawConfig } from "../../config/types.openclaw.js";
+import type { ActiveProcessSessionReference } from "../bash-process-references.js";
 import type { BootstrapMode } from "../bootstrap-mode.js";
 import type { ResolvedTimeFormat } from "../date-time.js";
 import type { EmbeddedContextFile } from "../pi-embedded-helpers.js";
@@ -59,6 +60,7 @@ export function buildEmbeddedSystemPrompt(params: {
     channel?: string;
     /** Supported message actions for the current channel (e.g., react, edit, unsend) */
     channelActions?: string[];
+    activeProcessSessions?: ActiveProcessSessionReference[];
   };
   messageToolHints?: string[];
   sandboxInfo?: EmbeddedSandboxInfo;
diff --git a/src/agents/pi-tools.ts b/src/agents/pi-tools.ts
index 8446cde8389..c9259cba669 100644
--- a/src/agents/pi-tools.ts
+++ b/src/agents/pi-tools.ts
@@ -144,6 +144,28 @@ function createLazyProcessTool(defaults?: ProcessToolDefaults): AnyAgentTool {
   } as AnyAgentTool;
 }
 
+export function resolveProcessToolScopeKey(params: {
+  scopeKey?: string;
+  sessionKey?: string;
+  sessionId?: string;
+  agentId?: string;
+}): string | undefined {
+  const explicitScopeKey = params.scopeKey?.trim();
+  if (explicitScopeKey) {
+    return explicitScopeKey;
+  }
+  const sessionKey = params.sessionKey?.trim();
+  if (sessionKey) {
+    return sessionKey;
+  }
+  const sessionId = params.sessionId?.trim();
+  if (sessionId) {
+    return sessionId;
+  }
+  const agentId = params.agentId?.trim();
+  return agentId ? `agent:${agentId}` : undefined;
+}
+
 function applyModelProviderToolPolicy(
   tools: AnyAgentTool[],
   params?: {
@@ -442,8 +464,12 @@ export function createOpenClawCodingTools(options?: {
   ]);
   // Prefer sessionKey for process isolation scope to prevent cross-session process visibility/killing.
   // Fallback to agentId if no sessionKey is available (e.g. legacy or global contexts).
-  const scopeKey =
-    options?.exec?.scopeKey ?? options?.sessionKey ?? (agentId ? `agent:${agentId}` : undefined);
+  const scopeKey = resolveProcessToolScopeKey({
+    scopeKey: options?.exec?.scopeKey,
+    sessionKey: options?.sessionKey,
+    sessionId: options?.sessionId,
+    agentId,
+  });
   const subagentStore = resolveSubagentCapabilityStore(options?.sessionKey, {
     cfg: options?.config,
   });
diff --git a/src/agents/system-prompt-params.ts b/src/agents/system-prompt-params.ts
index 4e4138b3b17..336128120a2 100644
--- a/src/agents/system-prompt-params.ts
+++ b/src/agents/system-prompt-params.ts
@@ -2,6 +2,7 @@ import fs from "node:fs";
 import path from "node:path";
 import type { OpenClawConfig } from "../config/types.openclaw.js";
 import { findGitRoot } from "../infra/git-root.js";
+import type { ActiveProcessSessionReference } from "./bash-process-references.js";
 import {
   formatUserTime,
   resolveUserTimeFormat,
@@ -23,6 +24,7 @@ type RuntimeInfoInput = {
   /** Supported message actions for the current channel (e.g., react, edit, unsend) */
   channelActions?: string[];
   repoRoot?: string;
+  activeProcessSessions?: ActiveProcessSessionReference[];
 };
 
 type SystemPromptRuntimeParams = {
diff --git a/src/agents/system-prompt.ts b/src/agents/system-prompt.ts
index 741b0339b6c..8483e3d7bf4 100644
--- a/src/agents/system-prompt.ts
+++ b/src/agents/system-prompt.ts
@@ -14,6 +14,7 @@ import {
   normalizeOptionalLowercaseString,
 } from "../shared/string-coerce.js";
 import { listDeliverableMessageChannels } from "../utils/message-channel.js";
+import type { ActiveProcessSessionReference } from "./bash-process-references.js";
 import type { BootstrapMode } from "./bootstrap-mode.js";
 import {
   buildFullBootstrapPromptLines,
@@ -673,6 +674,7 @@ export function buildAgentSystemPrompt(params: {
     channel?: string;
     capabilities?: string[];
     repoRoot?: string;
+    activeProcessSessions?: ActiveProcessSessionReference[];
   };
   messageToolHints?: string[];
   sandboxInfo?: EmbeddedSandboxInfo;
@@ -1262,12 +1264,30 @@ export function buildAgentSystemPrompt(params: {
     "## Runtime",
     buildRuntimeLine(runtimeInfo, runtimeChannel, runtimeCapabilities, params.defaultThinkLevel),
     ...(modelIdentityLine ? [modelIdentityLine] : []),
+    ...buildActiveProcessSessionReferenceLines(runtimeInfo?.activeProcessSessions),
     `Reasoning: ${reasoningLevel} (hidden unless on/stream). Toggle /reasoning; /status shows Reasoning when enabled.`,
   );
 
   return lines.filter(Boolean).join("\n");
 }
 
+function buildActiveProcessSessionReferenceLines(
+  sessions: ActiveProcessSessionReference[] | undefined,
+): string[] {
+  if (!sessions?.length) {
+    return [];
+  }
+  return [
+    "Active background exec sessions in this scope:",
+    ...sessions.map((session) => {
+      const pid = typeof session.pid === "number" ? ` pid=${session.pid}` : "";
+      const cwd = session.cwd ? ` cwd=${sanitizeForPromptLiteral(session.cwd)}` : "";
+      return `- ${session.sessionId} ${session.status}${pid}${cwd} :: ${sanitizeForPromptLiteral(session.name)}`;
+    }),
+    "Use the process tool with a sessionId to poll, log, write to, or terminate these sessions. If prior context lost a sessionId, run process list.",
+  ];
+}
+
 export function buildRuntimeLine(
   runtimeInfo?: {
     agentId?: string;
@@ -1279,6 +1299,7 @@ export function buildRuntimeLine(
     defaultModel?: string;
     shell?: string;
     repoRoot?: string;
+    activeProcessSessions?: ActiveProcessSessionReference[];
   },
   runtimeChannel?: string,
   runtimeCapabilities: string[] = [],