fix(tests): remove broken sys.path.insert shadowing project packages

[dizhaky]

What does this PR do?

Fixes a real, 100%-reproducible test collection bug and cleans up six more files carrying the same latent defect, found while triaging a full test-suite run on main after PR #93 merged (69 failing tests across 26 files, 4 files that failed to collect at all).

tests/agent/test_model_metadata_ssl.py and tests/hermes_cli/test_auth_ssl_macos.py each had:

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

This only ascends one level — to tests/, not the project root. Since tests/agent/ and tests/hermes_cli/ are real Python packages (each has __init__.py), inserting tests/ at sys.path[0] makes from agent.model_metadata import ... / from hermes_cli.auth import ... resolve to the test subpackage itself instead of the real top-level package. Neither has a model_metadata.py/auth.py, so collection fails with ModuleNotFoundError.

Six more files had the identical bug but it stayed dormant (likely because the correctly-resolved module was already cached in sys.modules by the time these files were collected, depending on collection order) — fixed for consistency since they're the same landmine waiting to trigger under a different collection order: test_model_metadata_local_ctx.py, test_voice_wrapper.py, test_tool_progress_scrollback.py, test_resume_display.py, test_cli_user_message_preview.py, test_cli_init.py.

The line was always redundant — tests/conftest.py:32-34 already inserts the real PROJECT_ROOT into sys.path unconditionally before any test file loads.

The remaining ~65 of the 69 originally-failing tests turned out to be a container-provisioning gap in this specific session's environment, not a code issue: psutil, fire, ruamel.yaml, and croniter are all declared as unconditional core dependencies in pyproject.toml (plus ptyprocess behind the pty extra) but were missing from this session's Python env. Installed locally to confirm — no repo change needed for those. One test remains failing in this sandbox only (test_auth_nous_provider.py::test_no_ca_bundle_returns_true) because this environment's outbound-proxy config sets REQUESTS_CA_BUNDLE system-wide, which _resolve_verify() correctly honors per its documented CA-bundle priority order — not reproducible in a normal CI/dev environment, left as-is.

Related Issue

Fixes #

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✅ Tests (adding or improving test coverage)

Changes Made

• tests/agent/test_model_metadata_ssl.py: removed the broken sys.path.insert line and the now-unused os/sys imports — fixes a 100%-reproducible collection failure.
• tests/hermes_cli/test_auth_ssl_macos.py: same fix — fixes a 100%-reproducible collection failure. (sys import kept; still used elsewhere in the file for monkeypatch.setattr(sys, "platform", ...).)
• tests/agent/test_model_metadata_local_ctx.py, tests/hermes_cli/test_voice_wrapper.py, tests/cli/test_resume_display.py: same fix, dormant bug (both os/sys imports removed — unused elsewhere).
• tests/cli/test_tool_progress_scrollback.py, tests/cli/test_cli_user_message_preview.py: same fix, dormant bug (os import removed, sys kept — still used for sys.modules).
• tests/cli/test_cli_init.py: same fix, dormant bug (both os/sys imports kept — both still used elsewhere in the file).

How to Test

1. TZ=UTC LANG=C.UTF-8 PYTHONHASHSEED=0 python3 -m pytest tests/agent/test_model_metadata_ssl.py tests/hermes_cli/test_auth_ssl_macos.py tests/agent/test_model_metadata_local_ctx.py tests/hermes_cli/test_voice_wrapper.py tests/cli/test_tool_progress_scrollback.py tests/cli/test_resume_display.py tests/cli/test_cli_user_message_preview.py tests/cli/test_cli_init.py -q — 176 passed
2. Full suite via scripts/run_tests_parallel.py (with psutil/fire/ruamel.yaml/croniter/ptyprocess installed to match this session's environment to pyproject.toml's declared dependencies): 25370/25371 passed — the 1 remaining failure is the sandbox-only REQUESTS_CA_BUNDLE artifact described above.
3. ruff check on all 8 changed files — clean.

Checklist

Code

• My commit messages follow Conventional Commits (fix(scope):)
• My PR contains only changes related to this fix (no unrelated commits)
• I've run the relevant test suites and all tests pass
• I've added tests for my changes — N/A, this PR repairs test-collection correctness rather than adding new behavior

Documentation & Housekeeping

• N/A — no user-facing behavior or config changed; test-only fix.

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Generated by Claude Code

[github-actions]

🔎 Lint report: claude/hermes-errors-xh2x9x vs origin/main

ruff

Total: 0 on HEAD, 0 on base (➖ 0)

🆕 New issues: none

✅ Fixed issues: none

Unchanged: 0 pre-existing issues carried over.

ty (type checker)

Total: 8636 on HEAD, 8636 on base (➖ 0)

🆕 New issues: none

✅ Fixed issues: none

Unchanged: 4604 pre-existing issues carried over.

Diagnostics are surfaced as warnings — this check never fails the build.