hermes-agent/hermes_cli
Teknium 9de893e3b0 feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs
Native Windows (with Git for Windows installed) can now run the Hermes CLI
and gateway end-to-end without crashing.  install.ps1 already existed and
the Git Bash terminal backend was already wired up — this PR fills the
remaining gaps discovered by auditing every Windows-unsafe primitive
(`signal.SIGKILL`, `os.kill(pid, 0)` probes, bare `fcntl`/`termios`
imports) and by comparing hermes against how Claude Code, OpenCode, Codex,
and Cline handle native Windows.

## What changed

### UTF-8 stdio (new module)
- `hermes_cli/stdio.py` — single `configure_windows_stdio()` entry point.
  Flips the console code page to CP_UTF8 (65001), reconfigures
  `sys.stdout`/`stderr`/`stdin` to UTF-8, sets `PYTHONIOENCODING` + `PYTHONUTF8`
  for subprocesses.  No-op on non-Windows.  Opt out via `HERMES_DISABLE_WINDOWS_UTF8=1`.
- Called early in `cli.py::main`, `hermes_cli/main.py::main`, and
  `gateway/run.py::main` so Unicode banners (box-drawing, geometric
  symbols, non-Latin chat text) don't `UnicodeEncodeError` on cp1252
  consoles.

### Crash sites fixed
- `hermes_cli/main.py:7970` (hermes update → stuck gateway sweep): raw
  `os.kill(pid, _signal.SIGKILL)` → `gateway.status.terminate_pid(pid, force=True)`
  which routes through `taskkill /T /F` on Windows.
- `hermes_cli/profiles.py::_stop_gateway_process`: same fix — also
  converted SIGTERM path to `terminate_pid()` and widened OSError catch
  on the intermediate `os.kill(pid, 0)` probe.
- `hermes_cli/kanban_db.py:2914, 3041`: raw `signal.SIGKILL` →
  `getattr(signal, "SIGKILL", signal.SIGTERM)` fallback (matches the
  pattern already used in `gateway/status.py`).

### OSError widening on `os.kill(pid, 0)` probes
Windows raises `OSError` (WinError 87) for a gone PID instead of
`ProcessLookupError`.  Widened the catch at:
- `gateway/run.py:15101` (`--replace` wait-for-exit loop — without this,
  the loop busy-spins the full 10s every Windows gateway start)
- `hermes_cli/gateway.py:228, 460, 940`
- `hermes_cli/profiles.py:777`
- `tools/process_registry.py::_is_host_pid_alive`
- `tools/browser_tool.py:1170, 1206`

### Dashboard PTY graceful degradation
`hermes_cli/pty_bridge.py` depends on `fcntl`/`termios`/`ptyprocess`,
none of which exist on native Windows.  Previously a Windows dashboard
would crash on `import hermes_cli.web_server` because of a top-level
import.  Now:
- `hermes_cli/web_server.py` wraps the pty_bridge import in
  `try/except ImportError` and sets `_PTY_BRIDGE_AVAILABLE=False`.
- The `/api/pty` WebSocket handler returns a friendly "use WSL2 for
  this tab" message instead of exploding.
- Every other dashboard feature (sessions, jobs, metrics, config
  editor) runs natively on Windows.

### Dependency
- `pyproject.toml`: add `tzdata>=2023.3; sys_platform == 'win32'` so
  Python's `zoneinfo` works on Windows (which has no IANA tzdata
  shipped with the OS).  Credits @sprmn24 (PR #13182).

### Docs
- README.md: removed "Native Windows is not supported"; added
  PowerShell one-liner and Git-for-Windows prerequisite note.
- `website/docs/getting-started/installation.md`: new Windows section
  with capability matrix (everything native except the dashboard
  `/chat` PTY tab, which is WSL2-only).
- `website/docs/user-guide/windows-wsl-quickstart.md`: reframed as
  "WSL2 as an alternative to native" rather than "the only way".
- `website/docs/developer-guide/contributing.md`: updated
  cross-platform guidance with the `signal.SIGKILL` / `OSError`
  rules we enforce now.
- `website/docs/user-guide/features/web-dashboard.md`: acknowledged
  native Windows works for everything except the embedded PTY pane.

## Why this shape

Pulled from a survey of how other agent codebases handle native
Windows (Claude Code, OpenCode, Codex, Cline):

- All four treat Git Bash as the canonical shell on Windows, same as
  hermes already does in `tools/environments/local.py::_find_bash()`.
- None of them force `SetConsoleOutputCP` — but they don't have to,
  Node/Rust write UTF-16 to the Win32 console API.  Python does not get
  that for free, so we flip CP_UTF8 via ctypes.
- None of them ship PowerShell-as-primary-shell (Claude Code exposes
  PS as a secondary tool; scope creep for this PR).
- All of them use `taskkill /T /F` for force-kill on Windows, which
  is exactly what `gateway.status.terminate_pid(force=True)` does.

## Non-goals (deliberate scope limits)

- No PowerShell-as-a-second-shell tool — worth designing separately.
- No terminal routing rewrite (#12317, #15461, #19800 cluster) — that's
  the hardest design call and needs a separate doc.
- No wholesale `open()` → `open(..., encoding="utf-8")` sweep (Tianworld
  cluster) — will do as follow-up if users hit actual breakage; most
  modern code already specifies it.

## Validation

- 28 new tests in `tests/tools/test_windows_native_support.py` — all
  platform-mocked, pass on Linux CI.  Cover:
  - `configure_windows_stdio` idempotency, opt-out, env-preservation
  - `terminate_pid` taskkill routing, failure → OSError, FileNotFoundError fallback
  - `getattr(signal, "SIGKILL", …)` fallback shape
  - `_is_host_pid_alive` OSError widening (Windows-gone-PID behavior)
  - Source-level checks that all entry points call `configure_windows_stdio`
  - pty_bridge import-guard present in `web_server.py`
  - README no longer says "not supported"
- 12 pre-existing tests in `tests/tools/test_windows_compat.py` still pass.
- `tests/hermes_cli/` ran fully (3909 passed, 9 failures — all confirmed
  pre-existing on main by stash-test).
- `tests/gateway/` ran fully (5021 passed, 1 pre-existing failure).
- `tests/tools/test_process_registry.py` + `test_browser_*` pass.
- Manual smoke: `import hermes_cli.stdio; import gateway.run;
  import hermes_cli.web_server` — all clean, `_PTY_BRIDGE_AVAILABLE=True`
  on Linux (as expected).

## Files

- New: `hermes_cli/stdio.py`, `tests/tools/test_windows_native_support.py`
- Modified: `cli.py`, `gateway/run.py`, `hermes_cli/main.py`,
  `hermes_cli/profiles.py`, `hermes_cli/gateway.py`,
  `hermes_cli/kanban_db.py`, `hermes_cli/pty_bridge.py`,
  `hermes_cli/web_server.py`, `tools/browser_tool.py`,
  `tools/process_registry.py`, `pyproject.toml`, `README.md`, and 4
  docs pages.

Credits to everyone whose prior PR work informed these fixes — see
the co-author trailers.  All of the PRs listed in
`~/.hermes/plans/windows-support-prs.md` fixing `os.kill` / `signal.SIGKILL`
/ UTF-8 stdio / tzdata / README patterns found the same issues; this PR
consolidates them.

Co-authored-by: Philip D'Souza <9472774+PhilipAD@users.noreply.github.com>
Co-authored-by: Arecanon <42595053+ArecaNon@users.noreply.github.com>
Co-authored-by: XiaoXiao0221 <263113677+XiaoXiao0221@users.noreply.github.com>
Co-authored-by: Lars Hagen <1360677+lars-hagen@users.noreply.github.com>
Co-authored-by: Luan Dias <65574834+luandiasrj@users.noreply.github.com>
Co-authored-by: Ruzzgar <ruzzgarcn@gmail.com>
Co-authored-by: sprmn24 <oncuevtv@gmail.com>
Co-authored-by: adybag14-cyber <252811164+adybag14-cyber@users.noreply.github.com>
Co-authored-by: Prasanna28Devadiga <54196612+Prasanna28Devadiga@users.noreply.github.com>
2026-05-08 14:27:40 -07:00
..
__init__.py chore: release v0.13.0 (2026.5.7) (#21406) 2026-05-07 09:22:48 -07:00
_parser.py fix: add dashboard to CLI help epilogue and Docker CI smoke test 2026-05-07 06:16:23 -07:00
auth.py fix(auth): send Nous refresh token via header 2026-05-08 04:17:42 -07:00
auth_commands.py feat(nous): persist Nous OAuth across profiles via shared token store (#19712) 2026-05-04 04:54:55 -07:00
azure_detect.py chore: remove unused imports and dead locals (ruff F401, F841) (#17010) 2026-04-28 06:46:45 -07:00
backup.py fix(backup): floor pre-update backup_keep to 1 so the new backup survives 2026-05-04 05:07:13 -07:00
banner.py fix(banner): show correct update status on nix-built hermes (#17550) 2026-04-30 07:03:00 +05:30
browser_connect.py fix(browser): address Copilot review on /browser connect 2026-04-28 22:11:10 -07:00
callbacks.py fix: ESC cancels secret/sudo prompts, clearer skip messaging (#9902) 2026-04-14 16:11:37 -07:00
checkpoints.py feat(checkpoints): v2 single-store rewrite with real pruning + disk guardrails (#20709) 2026-05-06 05:44:35 -07:00
claw.py Merge origin/main and resolve conflict in nix/tui.nix 2026-05-07 22:56:19 +00:00
cli_output.py refactor: remove dead code — 1,784 lines across 77 files (#9180) 2026-04-13 16:32:04 -07:00
clipboard.py feat: fix img pasting in new ink plus newline after tools 2026-04-11 13:14:32 -05:00
codex_models.py feat(codex): add gpt-5.5 and wire live model discovery into picker (#14720) 2026-04-23 13:32:43 -07:00
colors.py feat: respect NO_COLOR env var and TERM=dumb (#4079) 2026-03-30 17:07:21 -07:00
commands.py Merge pull request #20805 from NousResearch/austin-feat-sessions-skills-menu 2026-05-07 18:54:16 -04:00
completion.py fix: preserve profile name completion in dynamic shell completion 2026-04-14 10:45:42 -07:00
config.py Serialize Hermes config access 2026-05-07 17:47:22 -07:00
copilot_auth.py fix(oauth,gateway): monotonic deadlines for polling/timeout loops 2026-05-07 05:09:39 -07:00
cron.py feat(cron): add no_agent mode for script-only cron jobs (watchdog pattern) (#19709) 2026-05-04 12:31:01 -07:00
curator.py feat(curator): add hermes curator list-archived command (#21236) 2026-05-07 05:46:51 -07:00
curses_ui.py fix: treat ctrl-c as curses cancel 2026-05-04 01:36:44 -07:00
debug.py fix(debug): redact log content at upload time in hermes debug share 2026-05-03 11:42:20 -07:00
default_soul.py fix: reset default SOUL.md to baseline identity text (#3159) 2026-03-26 01:34:27 -07:00
dingtalk_auth.py chore: remove unused imports and dead locals (ruff F401, F841) (#17010) 2026-04-28 06:46:45 -07:00
doctor.py Merge origin/main and resolve conflict in nix/tui.nix 2026-05-07 22:56:19 +00:00
dump.py refactor(env): use shared Hermes dotenv loader 2026-05-05 10:13:13 -07:00
env_loader.py refactor: consolidate symlink-safe atomic replace into shared helper 2026-04-28 04:58:22 -07:00
fallback_cmd.py feat(cli): add 'hermes fallback' command to manage fallback providers (#16052) 2026-04-26 06:19:04 -07:00
gateway.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
goals.py fix(goals): auto-pause when judge model returns unparseable output 2026-05-07 17:33:09 -07:00
hooks.py chore: remove unused imports and dead locals (ruff F401, F841) (#17010) 2026-04-28 06:46:45 -07:00
kanban.py feat(kanban): add specify — auxiliary LLM fleshes out triage tasks (#21435) 2026-05-07 13:04:41 -07:00
kanban_db.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
kanban_diagnostics.py fix(kanban): unify failure counter across spawn/timeout/crash outcomes (#20410) 2026-05-05 13:55:37 -07:00
kanban_specify.py feat(kanban): add specify — auxiliary LLM fleshes out triage tasks (#21435) 2026-05-07 13:04:41 -07:00
logs.py feat: component-separated logging with session context and filtering (#7991) 2026-04-11 17:23:36 -07:00
main.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
mcp_config.py fix(mcp): give 'mcp add --command' a distinct argparse dest 2026-05-07 05:17:03 -07:00
memory_setup.py fix(cli): decode .env as UTF-8 to avoid GBK crash on Windows 2026-05-02 01:40:31 -07:00
model_catalog.py chore: remove unused imports and dead locals (ruff F401, F841) (#17010) 2026-04-28 06:46:45 -07:00
model_normalize.py fix(opencode-go): keep users on opencode-go instead of hijacking to native providers (#20802) 2026-05-06 09:08:33 -07:00
model_switch.py fix(model_switch): live model discovery for custom_providers in /model picker 2026-05-07 05:21:26 -07:00
models.py feat(models): add paid tencent/hy3-preview route on OpenRouter (#21077) 2026-05-07 06:34:48 -07:00
nous_subscription.py feat(web): add SearXNG as a native search-only backend 2026-05-06 10:05:29 -07:00
oneshot.py fix(tui): honor launch toolsets (#17623) 2026-04-29 16:55:27 -07:00
pairing.py fix(pairing): enforce lockout on approve_code, not just generate_code (#10195) (#21325) 2026-05-07 07:18:21 -07:00
platforms.py feat: complete plugin platform parity — all 12 integration points 2026-04-29 21:56:51 -07:00
plugins.py feat: add transform_llm_output plugin hook 2026-05-07 05:46:05 -07:00
plugins_cmd.py feat(dashboard): add Plugins page with enable/disable, auth status, install/remove 2026-04-30 20:29:37 -04:00
profile_distribution.py feat(profile): shareable profile distributions via git (#20831) 2026-05-08 10:04:32 -07:00
profiles.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
providers.py fix: prevent bare 'custom' slug in model.provider (#17478) 2026-04-30 04:32:11 -07:00
pty_bridge.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
relaunch.py remove relaunch_chat 2026-04-29 20:33:29 -07:00
runtime_provider.py fix(credential_pool): resolve key mix-up when custom providers share base_url 2026-05-07 05:27:41 -07:00
setup.py fix: include terminal backend in quick setup wizard (#21842) 2026-05-08 17:36:38 +05:30
skills_config.py refactor(config): migrate remaining 33 cfg_get call sites (#17311) 2026-04-29 04:03:03 -07:00
skills_hub.py feat(skills): install skills from a direct HTTP(S) URL (#16323) 2026-04-26 20:57:10 -07:00
skin_engine.py fix(tui): honor skin highlight colors (#20895) 2026-05-06 14:01:56 -07:00
slack_cli.py fix(paths): route achievements plugin + profile-tui through HERMES_HOME 2026-04-30 23:21:54 -07:00
status.py fix(status): add missing popular provider API keys to hermes status display 2026-05-04 05:14:13 -07:00
stdio.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
timeouts.py refactor(timeouts): drop redundant ImportError in except clause 2026-04-26 20:48:20 -07:00
tips.py docs: refresh stale platform/LOC/test counts; clarify gateway vs plugin platforms 2026-05-05 13:45:47 -07:00
tools_config.py feat(computer-use): cua-driver backend, universal any-model schema 2026-05-08 11:07:38 -07:00
uninstall.py feat(uninstall): offer to remove named profiles when uninstalling from default 2026-04-18 19:18:13 -07:00
vercel_auth.py feat: add Vercel Sandbox backend 2026-04-29 07:22:33 -07:00
voice.py fix(tui): restore voice push-to-talk parity (#20897) 2026-05-06 15:49:59 -07:00
web_server.py feat(windows): close native-Windows install gaps — crash-free startup, UTF-8 stdio, tzdata dep, docs 2026-05-08 14:27:40 -07:00
webhook.py refactor(config): migrate remaining 33 cfg_get call sites (#17311) 2026-04-29 04:03:03 -07:00