diff --git a/frontend/app.js b/frontend/app.js
index a7a5eb1a..5ed339d8 100644
--- a/frontend/app.js
+++ b/frontend/app.js
@@ -288,10 +288,12 @@ class AppController {
           text: p.text || p.message,
           source: p.source_employee || 'system',
         });
-      // Route to terminal — 1-on-1 or EA chat path
-      } else if (this._currentConvId === p.conv_id && this._ceoTerm && (this._currentConvType === 'oneonone' || this._currentConvType === 'ea_chat')) {
+      // Route to terminal — 1-on-1, EA chat, or product planning path
+      } else if (this._currentConvId === p.conv_id && this._ceoTerm && (this._currentConvType === 'oneonone' || this._currentConvType === 'ea_chat' || this._currentConvType === 'product')) {
         if (p.sender !== 'ceo' && p.text != null) {
-          const source = this._currentConvType === 'ea_chat'
+          // Product planning conversations are with the EA — label them
+          // the same as ea_chat. 1-on-1s show the employee's nickname.
+          const source = (this._currentConvType === 'ea_chat' || this._currentConvType === 'product')
             ? '玲珑阁 (EA)'
             : this._resolveEmployeeNickname(p.employee_id || this._currentConvEmployeeId || '');
           this._ceoTerm.appendMessage({
diff --git a/package.json b/package.json
index a4d035c7..69722a64 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@1mancompany/onemancompany",
-  "version": "0.7.85",
+  "version": "0.7.86",
   "description": "The AI Operating System for One-Person Companies",
   "bin": {
     "onemancompany": "bin/cli.js"
diff --git a/pyproject.toml b/pyproject.toml
index 9c847545..ec5f760c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "onemancompany"
-version = "0.7.85"
+version = "0.7.86"
 description = "A one-man company simulation with pixel art visualization and LangChain AI agents"
 requires-python = ">=3.12"
 dependencies = [
diff --git a/tests/frontend/test_conversation_routing.js b/tests/frontend/test_conversation_routing.js
new file mode 100644
index 00000000..085ce8fe
--- /dev/null
+++ b/tests/frontend/test_conversation_routing.js
@@ -0,0 +1,83 @@
+#!/usr/bin/env node
+/* Regression test for the frontend's conversation_message router.
+ *
+ * Bug: PRODUCT planning conversations are opened in the CEO terminal
+ * (frontend/app.js:_openProductPlanningConversation sets
+ *  _currentConvType = 'product'), but the conversation_message handler's
+ * terminal-routing branch only matched _currentConvType === 'oneonone' ||
+ * 'ea_chat'. EA replies for product planning thus arrived via WebSocket
+ * but were never rendered — they only showed up in server logs because
+ * debug logging captured the LLM output text.
+ *
+ * Two assertions:
+ *  1. Source-level: the routing filter in app.js includes 'product'.
+ *  2. Behavioral: a small reimplementation of the routing predicate
+ *     returns true for {convType: 'product', conv_id matches}.
+ */
+
+const fs = require("fs");
+const path = require("path");
+
+const appJsPath = path.resolve(__dirname, "..", "..", "frontend", "app.js");
+const appJsSrc = fs.readFileSync(appJsPath, "utf-8");
+
+let failures = 0;
+function assert(cond, msg) {
+  if (cond) console.log(`  ok  ${msg}`);
+  else {
+    failures += 1;
+    console.log(`  FAIL  ${msg}`);
+  }
+}
+
+// ── Source-level invariant ────────────────────────────────────────────────
+// The terminal-routing branch of the conversation_message handler must
+// include 'product' alongside 'oneonone' and 'ea_chat'. We grep the
+// production source to ensure the fix isn't accidentally reverted.
+const filterPattern =
+  /this\._currentConvType\s*===\s*'oneonone'\s*\|\|\s*this\._currentConvType\s*===\s*'ea_chat'\s*\|\|\s*this\._currentConvType\s*===\s*'product'/;
+assert(
+  filterPattern.test(appJsSrc),
+  "conversation_message router includes 'product' in the terminal-routing filter",
+);
+
+// ── Behavioral mirror ─────────────────────────────────────────────────────
+// Re-implement the predicate so a unit test would have caught the bug
+// before it shipped. If the production filter ever drifts, the
+// source-level assertion above will fail; if our predicate drifts, the
+// behavioral cases below will fail.
+function shouldRouteToTerminal(currentConvId, currentConvType, messageConvId) {
+  if (currentConvId !== messageConvId) return false;
+  return (
+    currentConvType === "oneonone" ||
+    currentConvType === "ea_chat" ||
+    currentConvType === "product"
+  );
+}
+
+assert(
+  shouldRouteToTerminal("c-1", "product", "c-1") === true,
+  "product planning replies route to the terminal when the conv is open",
+);
+assert(
+  shouldRouteToTerminal("c-1", "oneonone", "c-1") === true,
+  "1-on-1 replies still route to the terminal",
+);
+assert(
+  shouldRouteToTerminal("c-1", "ea_chat", "c-1") === true,
+  "EA chat replies still route to the terminal",
+);
+assert(
+  shouldRouteToTerminal("c-1", "product", "c-2") === false,
+  "messages for a different conv_id do NOT route to the terminal",
+);
+assert(
+  shouldRouteToTerminal("c-1", "ceo_inbox", "c-1") === true ? false : true,
+  "ceo_inbox conversations do NOT route to terminal (they use chatPanel)",
+);
+
+if (failures) {
+  console.log(`\n${failures} failed`);
+  process.exit(1);
+}
+console.log("\nall tests passed");
diff --git a/tests/integration/test_frontend_conversation_routing.py b/tests/integration/test_frontend_conversation_routing.py
new file mode 100644
index 00000000..392ea5c1
--- /dev/null
+++ b/tests/integration/test_frontend_conversation_routing.py
@@ -0,0 +1,32 @@
+"""Pytest wrapper for the node-based frontend conversation-routing test.
+
+Regression guard: PRODUCT planning conversations were not routed to the
+CEO terminal because the conversation_message handler only matched
+'oneonone' / 'ea_chat'. EA replies arrived via WebSocket but never
+rendered. The accompanying node test asserts both the source-level
+filter and a behavioral mirror of the routing predicate.
+"""
+
+from __future__ import annotations
+
+import shutil
+import subprocess
+from pathlib import Path
+
+import pytest
+
+REPO_ROOT = Path(__file__).resolve().parents[2]
+TEST_SCRIPT = REPO_ROOT / "tests" / "frontend" / "test_conversation_routing.js"
+
+
+@pytest.mark.skipif(shutil.which("node") is None, reason="node not installed")
+def test_frontend_conversation_routing() -> None:
+    result = subprocess.run(
+        ["node", str(TEST_SCRIPT)],
+        cwd=REPO_ROOT,
+        capture_output=True,
+        text=True,
+    )
+    assert result.returncode == 0, (
+        f"frontend routing test failed:\nSTDOUT:\n{result.stdout}\nSTDERR:\n{result.stderr}"
+    )