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Author SHA1 Message Date
Teknium
fc918867b2 fix(windows): quote cache paths in bash + augment PATH so rg/bash resolve on first launch 
Three interrelated bugs from teknium1's first interactive chat on Windows:

1. **Snapshot/cwd file paths unquoted in bash command strings.**  The session
   bootstrap and per-command wrapper interpolated
   ``self._snapshot_path`` / ``self._cwd_file`` unquoted into bash commands
   like ``export -p > C:/Users/ryanc/.../hermes-snap-xxx.sh``.  Git Bash's
   MSYS2 layer handles ``C:/...`` paths correctly ONLY when quoted; unquoted,
   the colon and forward-slash get glob-parsed and the redirect targets a
   bogus path.  Symptom: every terminal command emitted two
   ``C:/Users/.../hermes-snap-*.sh (No such file or directory)`` lines that
   bled into stdout (``stderr=STDOUT`` on the local backend) and corrupted
   file contents when the agent wrote to scratch paths via the terminal
   tool.  Fix: ``shlex.quote()`` every interpolation of ``_snapshot_path``
   and ``_cwd_file`` in base.py — no-op on POSIX (the paths contain no
   shell-metachars), critical on Windows.

2. **Stale PATH on first hermes launch after install.**  ``install.ps1``
   adds the PortableGit ``cmd`` / ``bin`` / ``usr\bin`` directories to the
   Windows **User** PATH via ``SetEnvironmentVariable(..., "User")``.  That
   write propagates to newly *spawned* processes only — already-running
   shells (including the one the user types ``hermes`` into immediately
   after install) retain their old PATH.  So hermes starts with a PATH that
   doesn't include bash, rg, grep, ssh — and ``search_files`` reports
   "rg/find not available" when the user clearly just installed them.

   Fix: new ``_augment_path_with_known_tools()`` helper called from
   ``configure_windows_stdio()`` on startup.  Prepends the Hermes-managed
   Git directories + the WinGet Links directory (where ripgrep lands) to
   ``os.environ['PATH']`` if they exist on disk but aren't already in
   PATH.  Subsequent subprocess calls (including bash spawns via
   ``_find_bash()``) inherit the augmented PATH and find everything.
   No-op on POSIX and when the directories don't exist.

3. **Root cause of "file content corruption".**  #1 was the proximate cause.
   Errors like ``C:/Users/.../hermes-snap-xxx.sh: No such file or directory``
   were emitted on stderr by the failed redirect, captured into stdout via
   ``stderr=subprocess.STDOUT``, and if the agent used terminal commands
   like ``cat > file`` the leaked error bytes became part of the file.
   Fixing #1 eliminates this entirely.

## Tests

All 77 Windows-compat tests still pass on Linux (POSIX path is
shlex.quote('/tmp/foo.sh') → '/tmp/foo.sh' — unchanged).

## Not addressed here (would need a bigger design)

- Python file tools (``write_file``, ``read_file``) and the bash-backed
  terminal tool see DIFFERENT views of ``/tmp`` on Windows.  Python treats
  ``/tmp`` as ``C:\tmp`` (drive-relative), Git Bash's MSYS2 treats it as
  a virtual mount to the PortableGit install's ``tmp\``.  Would need a
  translation shim in the Python tools to resolve bash-virtual paths to
  their native-Windows equivalents.  Workaround for users today: use
  absolute native paths (``C:\Users\you\...``) instead of ``/tmp/...``
  when crossing between terminal and Python file tools.
 2026-05-08 14:27:40 -07:00
Teknium
b53bd12fe4 fix(windows-editor): default EDITOR=notepad so /edit and Ctrl+X Ctrl+E work 
Pre-existing Windows bug surfaced while reviewing the portable-MinGit
install: prompt_toolkit's Buffer.open_in_editor() falls back to POSIX
absolute paths (/usr/bin/nano, /usr/bin/vi, /usr/bin/emacs) that don't
exist on native Windows.  When neither $EDITOR nor $VISUAL is set,
Ctrl+X Ctrl+E ("open prompt in editor") and /edit both silently do
nothing on Windows — the user hits the key, nothing happens, no error.

This wasn't caused by MinGit (full Git for Windows doesn't fix it either,
because the Windows Python subprocess call resolves `/usr/bin/nano` as
`C:\usr\bin\nano`, which doesn't exist even with nano installed).

Fixes:
- hermes_cli/stdio.py::configure_windows_stdio now sets EDITOR=notepad
  on Windows if neither EDITOR nor VISUAL is set.  notepad.exe is in
  every Windows install, works as a blocking editor (subprocess.call
  waits for the window to close), and writes back to the file.
- hermes_cli/config.py (hermes config edit): reorder fallback list so
  Windows tries notepad first — previously nano led the list, which
  required Git Bash / WSL to be in PATH.
- Users who want VSCode / Neovim / Notepad++ can still override via
  $env:EDITOR — that's checked before our default kicks in.  Docstring
  spells out the common overrides.

The Ink TUI (`hermes --tui`) already handled Windows correctly via
ui-tui/src/lib/editor.ts falling back to notepad.exe on win32 — this
commit brings the classic prompt_toolkit CLI into parity.

3 new tests in test_windows_native_support.py verify:
- EDITOR=notepad gets set when unset on Windows
- Explicit $EDITOR is respected
- $VISUAL is respected (not overwritten by our default)
 2026-05-08 14:27:40 -07:00
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