fix(hermes): decode Hermes CLI output as UTF-8 so setup works on Windows

[Zechereh]

Fixes #57.

hermes tinyfish setup crashed on Windows: _hermes() decoded child output with the locale encoding (cp1252), and Hermes prints UTF-8 glyphs (🔍 → byte 0x8d).

Change	Why
_hermes() decodes with encoding="utf-8", errors="replace"	every Hermes subcommand routes through it; a stray byte can no longer kill the reader thread
e2e runs on windows-latest too	Linux-only e2e can't see locale-encoding bugs
e2e reads TINYFISH_API_KEY from AWS via the repo's OIDC role	the repo never had the secret, so every live check (incl. tinyfish setup) was skipped, even on main
timeout-minutes: 15, install log streamed	a hung Windows install ran silently until cancelled
*.sh text eol=lf	Windows checkouts would otherwise hand bash CRLF scripts

Verified in CI: before the fix commit the Windows e2e failed with the exact traceback from #57 (byte 0x8d in position 49, then TypeError at setup_cli.py:582); with it, setup, live doctor and search + extract pass on both OSes.

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• .github/workflows/hermes-ci.yml
• hermes/npm/package.json
• hermes/plugin.yaml
• hermes/pyproject.toml
• hermes/scripts/e2e.sh
• hermes/tests/test_rest_client.py
• hermes/tests/test_setup_cli.py
• hermes/tests/test_version.py
• hermes/tinyfish_hermes/setup_cli.py

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• hermes/scripts/e2e.sh

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📝 Walkthrough

The e2e workflow now runs on Ubuntu and Windows with a non-fail-fast matrix. It selects Bash and configures the virtual environment’s Python path for each runner. The e2e script adjusts paths when cygpath is available and prefixes REPO_ROOT when it is not absolute. It streams installation output to stderr while capturing it. A Git attributes rule enforces LF endings for shell scripts.

Sequence Diagram(s)

sequenceDiagram
  participant CIWorkflow
  participant Runner
  participant E2EScript
  CIWorkflow->>Runner: Start e2e job on Ubuntu or Windows
  CIWorkflow->>Runner: Set runner-specific Python paths
  Runner->>E2EScript: Run the e2e script with Bash
  E2EScript->>E2EScript: Normalize Windows-compatible paths
  E2EScript->>E2EScript: Stream and capture install output

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Suggested reviewers: akuzminsky

Priority: ➖ Normal

Merge Risk: 🟡 Moderate · up to b9341

Windows hermes tinyfish setup can still fail while reading Hermes output because the decoding change is absent. Fix that path before merging this Windows setup change.

Pre-merge checks: 3 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Linked Issues check		Issue #57 requires hermes tinyfish setup to complete on Windows. The whole-PR diff changes only CI, shell-script path handling, log streaming, and .gitattributes; it contains no change to `_hermes…	Update _hermes() to decode child output as UTF-8 with replacement errors, and make _toolset_disabled() tolerate a missing stdout value. Add a focused regression test for the Windows-style decode failure, then keep the Windows e2e cove…

Passed checks: 3 passed

Check name	Status	Explanation
Title check		The title clearly identifies the main change: decoding Hermes CLI output as UTF-8 to fix Windows setup failures.
Description check		The description directly explains the Windows decoding failure, the UTF-8 fix, Windows e2e coverage, and LF shell-script handling.
Out of Scope Changes check		The changes remain within issue #57 scope. The Windows e2e matrix exposes the Windows-only failure. The Windows virtual-environment paths, Git Bash path conversion, streamed install log, timeout, and …

Full details: Linked Issues check

Explanation

Issue #57 requires hermes tinyfish setup to complete on Windows. The whole-PR diff changes only CI, shell-script path handling, log streaming, and .gitattributes; it contains no change to _hermes() or _toolset_disabled(). The added Windows e2e job exercises the affected path, but it does not fix the reported UTF-8 decode failure or its stdout=None cascade. No regression test verifies the decoder behavior.

Resolution

Update _hermes() to decode child output as UTF-8 with replacement errors, and make _toolset_disabled() tolerate a missing stdout value. Add a focused regression test for the Windows-style decode failure, then keep the Windows e2e coverage.

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Inline comments:
Review comments at @.github/workflows/hermes-ci.yml:
- Around line 65-73: Update the subprocess.run call in _hermes to decode
captured text as UTF-8 and replace invalid sequences, so Windows locale encoding
cannot raise UnicodeDecodeError while reading Hermes output.

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