fix(tools,cli,gateway): add encoding="utf-8" to subprocess.run with text=True

[AlexFucuson9]

Summary

subprocess.run(..., text=True) without explicit encoding uses the system locale, which varies across platforms:

• Linux: typically UTF-8
• Windows: cp1252 or mbcs (system locale)

This causes mojibake on Windows when processing UTF-8 output from ffmpeg, whisper, and other tools.

Files changed (11 call sites, 8 files)

File	Line	Tool
tools/tts_tool.py	1862	ffmpeg
tools/transcription_tools.py	1190, 1236, 1238	whisper/ffmpeg
tools/environments/singularity.py	223	singularity
tools/voice_mode.py	392, 409	microphone check
hermes_cli/setup.py	1443	ssh probe
hermes_cli/main.py	1158	hermes update
tui_gateway/server.py	8996	codex CLI
skills/creative/comfyui/scripts/auto_fix_deps.py	54	pip install

Test plan

• python3 -m py_compile on all 8 changed files
• Existing tests pass unchanged (UTF-8 is already the expected encoding on Linux)

[alt-glitch]

This was generated by AI during triage.

Duplicate of #52249 — byte-for-byte identical diff (same 8 files, same 11 call sites) by the same author. #52249 is the earlier open PR; closing here in its favor.

@christian-byrne Tagging you on this ComfyUI item (skills/creative/comfyui/scripts/auto_fix_deps.py is among the changed files).

[tonydwb]

Code Review Summary

Verdict: Approved

Looks Good

• Mechanical fix: adds encoding="utf-8" to subprocess.run() calls across 8 files
• Ensures consistent UTF-8 decoding on all platforms (especially Windows)
• Prevents UnicodeDecodeError on non-ASCII output
• No behavioral changes — purely encoding safety
• Touches CLI, gateway, tools, and skill scripts uniformly

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Reviewed by Hermes Agent

[teknium1]

Closing as superseded by the consolidated Windows console-flash work tracked in #54220.

The relevant pieces from this PR/cluster have now landed through the targeted follow-up PRs #54236, #53892, and #54417, or are recorded in the umbrella tracker for any remaining native-Windows verification. Keeping this separate PR open would duplicate the tracker and the merged follow-up work.

Thanks for digging into this — the reports and PRs in this cluster helped identify the remaining spawn legs.