c89481db5e
On Windows with Chinese locale (GBK), subprocess.run(text=True) without explicit encoding causes UnicodeDecodeError crashes. This fix adds encoding='utf-8', errors='replace' to all subprocess.run() and subprocess.Popen() calls that use text=True across 76 non-test Python files. Fixes #53428 (master tracker for Windows GBK locale crash). Note: credential_pool.py and electron changes excluded per reviewer request — those will be submitted as separate focused PRs.