diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb487b7781b..22c1b0ea0c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ Docs: https://docs.openclaw.ai
 
 - CLI/plugins: have `openclaw plugins doctor` warn when a configured runtime needs a missing owner plugin, sharing the same install mapping as `openclaw doctor --fix`. Fixes #81326. (#81674) Thanks @Zavianx.
 - Agents/Codex: route OpenAI runs that resolve to `openai-codex` through the Codex provider and bootstrap OpenClaw's stored OAuth profile into the Codex harness when the harness owns transport, so `openai/*` model refs no longer fail with `No API key found for openai-codex` despite an existing Codex OAuth profile. (#82864) Thanks @ragesaq.
+- Agents/ACP: distinguish prompt-submitted and runtime-active child stalls from true interactive waits, including redacted proxy-env diagnostics for Codex ACP no-output runs. Fixes #44810.
 - Agents/skills: apply the full effective tool policy pipeline to inline `command-dispatch: tool` skill dispatch before owner-only filtering, preserving configured allow, deny, sandbox, sender, group, and subagent restrictions. (#78525)
 - Channel accounts: keep top-level default channel accounts visible when named accounts are added alongside default credential material, so mixed legacy/new account configs keep resolving `default` instead of silently dropping it.
 - Codex/Telegram: synthesize native Codex tool progress from final turn snapshots so Telegram `/verbose` stays visible when command events arrive only at completion.
diff --git a/src/acp/control-plane/manager.core.ts b/src/acp/control-plane/manager.core.ts
index d7fa0213200..b3c835e1807 100644
--- a/src/acp/control-plane/manager.core.ts
+++ b/src/acp/control-plane/manager.core.ts
@@ -896,6 +896,10 @@ export class AcpSessionManager {
                   ? AbortSignal.any([input.signal, internalAbortController.signal])
                   : internalAbortController.signal;
               const eventGate = { open: true };
+              await input.onLifecycle?.({
+                type: "prompt_submitted",
+                at: Date.now(),
+              });
               const turnPromise = consumeAcpTurnStream({
                 runtime,
                 turn: {
diff --git a/src/acp/control-plane/manager.types.ts b/src/acp/control-plane/manager.types.ts
index f8357d24854..2afebb5cf05 100644
--- a/src/acp/control-plane/manager.types.ts
+++ b/src/acp/control-plane/manager.types.ts
@@ -62,9 +62,15 @@ export type AcpRunTurnInput = {
   mode: AcpRuntimePromptMode;
   requestId: string;
   signal?: AbortSignal;
+  onLifecycle?: (event: AcpTurnLifecycleEvent) => Promise<void> | void;
   onEvent?: (event: AcpRuntimeEvent) => Promise<void> | void;
 };
 
+export type AcpTurnLifecycleEvent = {
+  type: "prompt_submitted";
+  at: number;
+};
+
 export type AcpCloseSessionInput = {
   cfg: OpenClawConfig;
   sessionKey: string;
diff --git a/src/agents/acp-spawn-parent-stream.test.ts b/src/agents/acp-spawn-parent-stream.test.ts
index 77b07f43865..882be3bb914 100644
--- a/src/agents/acp-spawn-parent-stream.test.ts
+++ b/src/agents/acp-spawn-parent-stream.test.ts
@@ -247,7 +247,7 @@ describe("startAcpSpawnParentStreamRelay", () => {
     relay.dispose();
   });
 
-  it("emits a no-output notice and a resumed notice when output returns", () => {
+  it("emits a pre-prompt stall notice and a resumed notice when output returns", () => {
     const relay = startAcpSpawnParentStreamRelay({
       runId: "run-2",
       parentSessionKey: "agent:main:main",
@@ -259,7 +259,7 @@ describe("startAcpSpawnParentStreamRelay", () => {
     });
 
     vi.advanceTimersByTime(1_500);
-    expectTextWithFragment(collectedTexts(), "has produced no output for 1s");
+    expectTextWithFragment(collectedTexts(), "no prompt submission was observed for 1s");
 
     emitAgentEvent({
       runId: "run-2",
@@ -286,6 +286,80 @@ describe("startAcpSpawnParentStreamRelay", () => {
     relay.dispose();
   });
 
+  it("classifies stalls after prompt submission but before the first runtime event", () => {
+    const relay = startAcpSpawnParentStreamRelay({
+      runId: "run-prompt-stall",
+      parentSessionKey: "agent:main:main",
+      childSessionKey: "agent:codex:acp:child-prompt-stall",
+      agentId: "codex",
+      streamFlushMs: 1,
+      noOutputNoticeMs: 1_000,
+      noOutputPollMs: 250,
+    });
+
+    emitAgentEvent({
+      runId: "run-prompt-stall",
+      stream: "acp",
+      data: {
+        phase: "prompt_submitted",
+        at: Date.now(),
+        proxyEnvKeys: ["HTTPS_PROXY"],
+      },
+    });
+    vi.advanceTimersByTime(1_500);
+
+    const texts = collectedTexts();
+    expectTextWithFragment(texts, "prompt was submitted but no ACP runtime event arrived for 1s");
+    expectTextWithFragment(texts, "proxy env: HTTPS_PROXY");
+    expectNoTextWithFragment(texts, "waiting for interactive input");
+    relay.dispose();
+  });
+
+  it("classifies runtime activity without visible assistant output separately from input waits", () => {
+    const relay = startAcpSpawnParentStreamRelay({
+      runId: "run-runtime-stall",
+      parentSessionKey: "agent:main:main",
+      childSessionKey: "agent:codex:acp:child-runtime-stall",
+      agentId: "codex",
+      streamFlushMs: 1,
+      noOutputNoticeMs: 1_000,
+      noOutputPollMs: 250,
+    });
+
+    emitAgentEvent({
+      runId: "run-runtime-stall",
+      stream: "acp",
+      data: {
+        phase: "prompt_submitted",
+        at: Date.now(),
+        proxyEnvKeys: [],
+      },
+    });
+    vi.advanceTimersByTime(750);
+    emitAgentEvent({
+      runId: "run-runtime-stall",
+      stream: "acp",
+      data: {
+        phase: "runtime_event",
+        eventType: "status",
+        text: "connecting to upstream",
+      },
+    });
+    vi.advanceTimersByTime(750);
+    expectNoTextWithFragment(collectedTexts(), "has ACP runtime activity");
+
+    vi.advanceTimersByTime(500);
+
+    const texts = collectedTexts();
+    expectTextWithFragment(
+      texts,
+      "has ACP runtime activity but no visible assistant output for 1s",
+    );
+    expectTextWithFragment(texts, "Last ACP event: status");
+    expectNoTextWithFragment(texts, "waiting for interactive input");
+    relay.dispose();
+  });
+
   it("auto-disposes stale relays after max lifetime timeout", () => {
     const relay = startAcpSpawnParentStreamRelay({
       runId: "run-3",
diff --git a/src/agents/acp-spawn-parent-stream.ts b/src/agents/acp-spawn-parent-stream.ts
index 242d69ddd00..c8b59165b2e 100644
--- a/src/agents/acp-spawn-parent-stream.ts
+++ b/src/agents/acp-spawn-parent-stream.ts
@@ -37,6 +37,20 @@ function toFiniteNumber(value: unknown): number | undefined {
   return typeof value === "number" && Number.isFinite(value) ? value : undefined;
 }
 
+function normalizeStringArray(value: unknown): string[] {
+  if (!Array.isArray(value)) {
+    return [];
+  }
+  return value.filter((item): item is string => typeof item === "string" && item.length > 0);
+}
+
+function formatProxyEnvSummary(keys: string[]): string {
+  if (keys.length === 0) {
+    return "proxy env: none";
+  }
+  return `proxy env: ${keys.join(", ")}`;
+}
+
 function resolveAcpStreamLogPathFromSessionFile(sessionFile: string, sessionId: string): string {
   const baseDir = path.dirname(path.resolve(sessionFile));
   return path.join(baseDir, `${sessionId}.acp-stream.jsonl`);
@@ -243,6 +257,11 @@ export function startAcpSpawnParentStreamRelay(params: {
   let pendingText = "";
   let lastProgressAt = Date.now();
   let stallNotified = false;
+  let promptSubmittedAt: number | undefined;
+  let firstRuntimeEventAt: number | undefined;
+  let firstVisibleOutputAt: number | undefined;
+  let lastRuntimeEventType: string | undefined;
+  let proxyEnvKeysAtPrompt: string[] = [];
   let flushTimer: NodeJS.Timeout | undefined;
   let relayLifetimeTimer: NodeJS.Timeout | undefined;
 
@@ -284,6 +303,34 @@ export function startAcpSpawnParentStreamRelay(params: {
     flushTimer.unref?.();
   };
 
+  const buildNoOutputNotice = () => {
+    const seconds = Math.round(noOutputNoticeMs / 1000);
+    if (!promptSubmittedAt) {
+      return {
+        summary: `No prompt submission observed for ${seconds}s after child start.`,
+        text: `${relayLabel} session started but no prompt submission was observed for ${seconds}s.`,
+      };
+    }
+    if (!firstRuntimeEventAt) {
+      const proxySummary = formatProxyEnvSummary(proxyEnvKeysAtPrompt);
+      return {
+        summary: `Prompt submitted but no ACP runtime event for ${seconds}s (${proxySummary}).`,
+        text: `${relayLabel} prompt was submitted but no ACP runtime event arrived for ${seconds}s (${proxySummary}). Check upstream connectivity, auth, or proxy/network access in the gateway child environment.`,
+      };
+    }
+    if (!firstVisibleOutputAt) {
+      const lastEvent = lastRuntimeEventType ? ` Last ACP event: ${lastRuntimeEventType}.` : "";
+      return {
+        summary: `ACP runtime active but no visible assistant output for ${seconds}s.${lastEvent}`,
+        text: `${relayLabel} has ACP runtime activity but no visible assistant output for ${seconds}s.${lastEvent} It may be working, blocked on a tool, or failing before visible output.`,
+      };
+    }
+    return {
+      summary: `No visible output for ${seconds}s. It may be waiting for input.`,
+      text: `${relayLabel} has produced no visible output for ${seconds}s. It may be waiting for interactive input.`,
+    };
+  };
+
   const noOutputWatcherTimer = setInterval(() => {
     if (disposed || noOutputNoticeMs <= 0) {
       return;
@@ -295,17 +342,15 @@ export function startAcpSpawnParentStreamRelay(params: {
       return;
     }
     stallNotified = true;
+    const notice = buildNoOutputNotice();
     recordTaskRunProgressByRunId({
       runId,
       runtime: "acp",
       sessionKey: params.childSessionKey,
       lastEventAt: Date.now(),
-      eventSummary: `No output for ${Math.round(noOutputNoticeMs / 1000)}s. It may be waiting for input.`,
+      eventSummary: notice.summary,
     });
-    emit(
-      `${relayLabel} has produced no output for ${Math.round(noOutputNoticeMs / 1000)}s. It may be waiting for interactive input.`,
-      `${contextPrefix}:stall`,
-    );
+    emit(notice.text, `${contextPrefix}:stall`);
   }, noOutputPollMs);
   noOutputWatcherTimer.unref?.();
 
@@ -365,6 +410,7 @@ export function startAcpSpawnParentStreamRelay(params: {
       }
 
       lastProgressAt = Date.now();
+      firstVisibleOutputAt ??= lastProgressAt;
       pendingText += delta;
       if (pendingText.length > STREAM_BUFFER_MAX_CHARS) {
         pendingText = pendingText.slice(-STREAM_BUFFER_MAX_CHARS);
@@ -377,6 +423,34 @@ export function startAcpSpawnParentStreamRelay(params: {
       return;
     }
 
+    if (event.stream === "acp") {
+      const data = event.data as
+        | {
+            phase?: unknown;
+            at?: unknown;
+            eventType?: unknown;
+            proxyEnvKeys?: unknown;
+          }
+        | undefined;
+      const phase = normalizeOptionalString(data?.phase);
+      logEvent("acp", { phase: phase ?? "unknown", data: event.data });
+      if (phase === "prompt_submitted") {
+        const at = toFiniteNumber(data?.at) ?? Date.now();
+        promptSubmittedAt ??= at;
+        proxyEnvKeysAtPrompt = normalizeStringArray(data?.proxyEnvKeys);
+        lastProgressAt = Date.now();
+        return;
+      }
+      if (phase === "runtime_event") {
+        const eventType = normalizeOptionalString(data?.eventType);
+        firstRuntimeEventAt ??= Date.now();
+        lastRuntimeEventType = eventType;
+        lastProgressAt = Date.now();
+        return;
+      }
+      return;
+    }
+
     if (event.stream !== "lifecycle") {
       return;
     }
diff --git a/src/agents/agent-command.ts b/src/agents/agent-command.ts
index 46159059250..e2558f59ee0 100644
--- a/src/agents/agent-command.ts
+++ b/src/agents/agent-command.ts
@@ -575,7 +575,23 @@ async function agentCommandInternal(
           mode: "prompt",
           requestId: runId,
           signal: opts.abortSignal,
+          onLifecycle: (event) => {
+            if (event.type === "prompt_submitted") {
+              attemptExecutionRuntime.emitAcpPromptSubmitted({
+                runId,
+                sessionKey,
+                at: event.at,
+              });
+            }
+          },
           onEvent: (event) => {
+            if (event.type !== "text_delta") {
+              attemptExecutionRuntime.emitAcpRuntimeEvent({
+                runId,
+                sessionKey,
+                event,
+              });
+            }
             if (event.type === "done") {
               stopReason = event.stopReason;
               return;
diff --git a/src/agents/command/attempt-execution.error-propagation.test.ts b/src/agents/command/attempt-execution.error-propagation.test.ts
index c0ddc596b5e..4fac46377c2 100644
--- a/src/agents/command/attempt-execution.error-propagation.test.ts
+++ b/src/agents/command/attempt-execution.error-propagation.test.ts
@@ -5,7 +5,12 @@ import {
   onAgentEvent,
   resetAgentEventsForTest,
 } from "../../infra/agent-events.js";
-import { emitAcpLifecycleError, formatAcpLifecycleError } from "./attempt-execution.js";
+import {
+  emitAcpLifecycleError,
+  emitAcpPromptSubmitted,
+  emitAcpRuntimeEvent,
+  formatAcpLifecycleError,
+} from "./attempt-execution.js";
 
 let captured: AgentEventPayload[] = [];
 let unsubscribe: (() => void) | undefined;
@@ -18,6 +23,57 @@ beforeEach(() => {
   });
 });
 
+describe("ACP diagnostic events", () => {
+  it("emits prompt-submitted state with proxy env names but not values", () => {
+    const previous = process.env.HTTPS_PROXY;
+    process.env.HTTPS_PROXY = "http://proxy.example.invalid:8080";
+    try {
+      emitAcpPromptSubmitted({
+        runId: "run-prompt",
+        sessionKey: "agent:codex:acp:child",
+        at: 123,
+      });
+    } finally {
+      if (previous === undefined) {
+        delete process.env.HTTPS_PROXY;
+      } else {
+        process.env.HTTPS_PROXY = previous;
+      }
+    }
+
+    const event = captured[0];
+    expect(event?.stream).toBe("acp");
+    expect(event?.sessionKey).toBe("agent:codex:acp:child");
+    expect(event?.data).toMatchObject({
+      phase: "prompt_submitted",
+      at: 123,
+      proxyEnvKeys: expect.arrayContaining(["HTTPS_PROXY"]),
+    });
+    expect(JSON.stringify(event?.data)).not.toContain("proxy.example.invalid");
+  });
+
+  it("emits sanitized non-text runtime events for parent relay diagnostics", () => {
+    emitAcpRuntimeEvent({
+      runId: "run-status",
+      event: {
+        type: "status",
+        text: "connecting token=sk-abcdefghijklmnopqrstuvwxyz123456",
+        tag: "session_info_update",
+      },
+    });
+
+    const event = captured[0];
+    expect(event?.stream).toBe("acp");
+    expect(event?.data).toMatchObject({
+      phase: "runtime_event",
+      eventType: "status",
+      tag: "session_info_update",
+    });
+    expect(String(event?.data.text)).toContain("connecting");
+    expect(String(event?.data.text)).not.toContain("sk-abcdefghijklmnopqrstuvwxyz123456");
+  });
+});
+
 afterEach(() => {
   unsubscribe?.();
   unsubscribe = undefined;
diff --git a/src/agents/command/attempt-execution.runtime.ts b/src/agents/command/attempt-execution.runtime.ts
index 495142f204f..fc725d9f009 100644
--- a/src/agents/command/attempt-execution.runtime.ts
+++ b/src/agents/command/attempt-execution.runtime.ts
@@ -5,6 +5,8 @@ export {
   emitAcpLifecycleEnd,
   emitAcpLifecycleError,
   emitAcpLifecycleStart,
+  emitAcpPromptSubmitted,
+  emitAcpRuntimeEvent,
   persistAcpTurnTranscript,
   persistCliTurnTranscript,
   runAgentAttempt,
diff --git a/src/agents/command/attempt-execution.ts b/src/agents/command/attempt-execution.ts
index 6a18cf22d06..8adc28a15f5 100644
--- a/src/agents/command/attempt-execution.ts
+++ b/src/agents/command/attempt-execution.ts
@@ -1,5 +1,6 @@
 import type { AgentMessage } from "@earendil-works/pi-agent-core";
 import { formatAcpErrorChain } from "../../acp/runtime/errors.js";
+import type { AcpRuntimeEvent } from "../../acp/runtime/types.js";
 import { normalizeReplyPayload } from "../../auto-reply/reply/normalize-reply.js";
 import type { ThinkLevel, VerboseLevel } from "../../auto-reply/thinking.js";
 import { appendSessionTranscriptMessage } from "../../config/sessions/transcript-append.js";
@@ -11,6 +12,7 @@ import type { SessionEntry } from "../../config/sessions/types.js";
 import type { OpenClawConfig } from "../../config/types.openclaw.js";
 import { emitAgentEvent } from "../../infra/agent-events.js";
 import { readErrorName } from "../../infra/errors.js";
+import { redactSensitiveText } from "../../logging/redact.js";
 import { createSubsystemLogger } from "../../logging/subsystem.js";
 import { annotateInterSessionPromptText } from "../../sessions/input-provenance.js";
 import { emitSessionTranscriptUpdate } from "../../sessions/transcript-events.js";
@@ -722,6 +724,93 @@ export function emitAcpLifecycleStart(params: { runId: string; startedAt: number
   });
 }
 
+const ACP_PROXY_ENV_KEYS = [
+  "HTTP_PROXY",
+  "HTTPS_PROXY",
+  "ALL_PROXY",
+  "http_proxy",
+  "https_proxy",
+  "all_proxy",
+] as const;
+
+function resolvePresentProxyEnvKeys(env: NodeJS.ProcessEnv = process.env): string[] {
+  return ACP_PROXY_ENV_KEYS.filter((key) => {
+    const value = env[key];
+    return typeof value === "string" && value.trim().length > 0;
+  });
+}
+
+function sanitizeAcpDiagnosticText(value: string): string {
+  return redactSensitiveText(value).replace(/\s+/g, " ").trim().slice(0, 240);
+}
+
+function acpRuntimeEventDiagnostics(event: AcpRuntimeEvent): Record<string, unknown> {
+  if (event.type === "status") {
+    return {
+      eventType: event.type,
+      text: sanitizeAcpDiagnosticText(event.text),
+      ...(event.tag ? { tag: event.tag } : {}),
+    };
+  }
+  if (event.type === "tool_call") {
+    return {
+      eventType: event.type,
+      text: sanitizeAcpDiagnosticText(event.text),
+      ...(event.tag ? { tag: event.tag } : {}),
+      ...(event.status ? { status: sanitizeAcpDiagnosticText(event.status) } : {}),
+      ...(event.title ? { title: sanitizeAcpDiagnosticText(event.title) } : {}),
+      ...(event.toolCallId ? { toolCallId: sanitizeAcpDiagnosticText(event.toolCallId) } : {}),
+    };
+  }
+  if (event.type === "error") {
+    return {
+      eventType: event.type,
+      message: sanitizeAcpDiagnosticText(event.message),
+      ...(event.code ? { code: sanitizeAcpDiagnosticText(event.code) } : {}),
+      ...(typeof event.retryable === "boolean" ? { retryable: event.retryable } : {}),
+    };
+  }
+  if (event.type === "done") {
+    return {
+      eventType: event.type,
+      ...(event.stopReason ? { stopReason: sanitizeAcpDiagnosticText(event.stopReason) } : {}),
+    };
+  }
+  return {
+    eventType: event.type,
+    stream: event.stream ?? "output",
+  };
+}
+
+export function emitAcpPromptSubmitted(params: { runId: string; sessionKey?: string; at: number }) {
+  emitAgentEvent({
+    runId: params.runId,
+    stream: "acp",
+    ...(params.sessionKey ? { sessionKey: params.sessionKey } : {}),
+    data: {
+      phase: "prompt_submitted",
+      at: params.at,
+      proxyEnvKeys: resolvePresentProxyEnvKeys(),
+    },
+  });
+}
+
+export function emitAcpRuntimeEvent(params: {
+  runId: string;
+  event: AcpRuntimeEvent;
+  sessionKey?: string;
+}) {
+  emitAgentEvent({
+    runId: params.runId,
+    stream: "acp",
+    ...(params.sessionKey ? { sessionKey: params.sessionKey } : {}),
+    data: {
+      phase: "runtime_event",
+      ...acpRuntimeEventDiagnostics(params.event),
+    },
+  });
+}
+
 export function emitAcpLifecycleEnd(params: { runId: string }) {
   emitAgentEvent({
     runId: params.runId,
diff --git a/src/commands/agent.acp.test.ts b/src/commands/agent.acp.test.ts
index d7f85547e5a..c68c93105b9 100644
--- a/src/commands/agent.acp.test.ts
+++ b/src/commands/agent.acp.test.ts
@@ -34,6 +34,8 @@ const attemptExecutionMocks = vi.hoisted(() => ({
   emitAcpLifecycleStart: vi.fn(),
   emitAcpLifecycleEnd: vi.fn(),
   emitAcpLifecycleError: vi.fn(),
+  emitAcpPromptSubmitted: vi.fn(),
+  emitAcpRuntimeEvent: vi.fn(),
   persistAcpTurnTranscript: vi.fn(
     async ({ sessionEntry }: { sessionEntry?: unknown }) => sessionEntry,
   ),
@@ -74,6 +76,8 @@ vi.mock("../agents/command/attempt-execution.runtime.js", () => {
     emitAcpLifecycleStart: attemptExecutionMocks.emitAcpLifecycleStart,
     emitAcpLifecycleEnd: attemptExecutionMocks.emitAcpLifecycleEnd,
     emitAcpLifecycleError: attemptExecutionMocks.emitAcpLifecycleError,
+    emitAcpPromptSubmitted: attemptExecutionMocks.emitAcpPromptSubmitted,
+    emitAcpRuntimeEvent: attemptExecutionMocks.emitAcpRuntimeEvent,
     emitAcpAssistantDelta: ({
       runId,
       text,