fix(platforms): make QR fallback install tip target the active interpreter

The Feishu, WeCom, QQ onboarding and Telegram managed-bot flows printed a
hard-coded 'pip install qrcode' tip when the qrcode package was missing. In
Hermes' isolated venv the bare pip either doesn't exist or targets an
unrelated system Python. Print '{sys.executable} -m pip install qrcode'
instead, matching the existing codebase convention for install hints.

Fixes #111695

gateway/platforms/qqbot/onboard.py

@@ -4,6 +4,7 @@
 from __future__ import annotations
 
 import logging
+import sys
 import time
 from enum import IntEnum
 from typing import Optional, Tuple
@@ -97,7 +98,7 @@ def qr_register(timeout_seconds: int = 600) -> Optional[dict]:
             print(f"  Scan the QR code above, or open this URL directly:\n  {url}")
         else:
             print(f"  Open this URL in QQ on your phone:\n  {url}")
-            print("  Tip: pip install qrcode  to display a scannable QR code here")
+            print(f"  Tip: {sys.executable} -m pip install qrcode  to display a scannable QR code here")
         print()
         while time.monotonic() < deadline:
             try:

hermes_cli/telegram_managed_bot.py

@@ -76,7 +76,7 @@ def render_qr_terminal(url: str) -> str:
 
 def print_qr_code(url: str, *, include_link: bool = True) -> None:
     """Print a QR code to stdout, with URL fallback if qrcode is missing."""
-    print(render_qr_terminal(url) or "  (Install 'qrcode' for a scannable QR code: pip install qrcode)")
+    print(render_qr_terminal(url) or f"  (Install 'qrcode' for a scannable QR code: {sys.executable} -m pip install qrcode)")
     if include_link:
         print(f"  Link: {url}")
 

plugins/platforms/feishu/adapter.py

@@ -30,6 +30,7 @@ import logging
 import mimetypes
 import os
 import re
+import sys
 import threading
 import time
 import uuid
@@ -4103,7 +4104,7 @@ def _qr_register_inner(*, initial_domain: str, timeout_seconds: int) -> Optional
         print(f"\n  Scan the QR code above, or open this URL directly:\n  {qr_url}")
     else:
         print(f"  Open this URL in Feishu / Lark on your phone:\n\n  {qr_url}\n")
-        print("  Tip: pip install qrcode  to display a scannable QR code here next time")
+        print(f"  Tip: {sys.executable} -m pip install qrcode  to display a scannable QR code here next time")
     print()
     result = _poll_registration(
         device_code=begin["device_code"], interval=begin["interval"],

plugins/platforms/wecom/adapter.py

@@ -10,6 +10,7 @@ import asyncio
 import json
 import logging
 import re
+import sys
 import time
 import uuid
 from datetime import datetime, timezone
@@ -674,7 +675,7 @@ def qr_scan_for_bot_info(*, timeout_seconds: int = _QR_POLL_TIMEOUT) -> Optional
         print(f"\n  Scan the QR code above, or open this URL directly:\n  {page_url}")
     except Exception:
         print(f"  Open this URL in WeCom on your phone:\n\n  {page_url}\n")
-        print("  Tip: pip install qrcode  to display a scannable QR code here next time")
+        print(f"  Tip: {sys.executable} -m pip install qrcode  to display a scannable QR code here next time")
     print("\n  Fetching configuration results...", end="", flush=True)
     deadline = time.monotonic() + timeout_seconds
     query_url = f"{_QR_QUERY_URL}?scode={urllib.parse.quote(scode)}"

tests/hermes_cli/test_telegram_managed_bot.py

@@ -36,6 +36,17 @@ class TestQRCode:
         captured = capsys.readouterr()
         assert "https://t.me/newbot/Bot/test_bot" in captured.out
 
+    def test_print_qr_code_tip_targets_active_interpreter(self, capsys):
+        # Regression for #111695: a bare `pip install` targets the wrong
+        # environment when Hermes runs in an isolated venv. The fallback tip
+        # must name the interpreter that is actually running.
+        import sys
+
+        with patch.dict("sys.modules", {"qrcode": None}):
+            print_qr_code("https://t.me/newbot/Bot/test_bot")
+        captured = capsys.readouterr()
+        assert sys.executable in captured.out
+
 
 class TestCreatePairing:
     def test_success(self):