test(cli): fast fixtures for scan-format argparse tests + fix doubled scripts path (refs #271)

[Wolfvin]

Fixes the test-design subset of #271 (Group C + the path-bug from Group D). These are test-only fixes — no product code changed.

Fixes

1 & 2. TestArgparseFormatConflictRegression::test_scan_with_format_{long,short}_does_not_crash

The tests ran codelens scan . --format json / -f json via subprocess with timeout=60. . resolved to the real scripts/ dir, so scanning the whole codebase exceeded 60s and the subprocess timed out. The test's only purpose is to verify argparse does not raise a --format/-f conflict — it does not need a real codebase.

Fix: point the scan at a tiny throwaway tempfile.mkdtemp() workspace containing one trivial .py file, cleaned up in finally with shutil.rmtree(..., ignore_errors=True). Same argparse path exercised; assertions unchanged ("argparse.ArgumentError" not in stderr, "conflicting option string" not in stderr).

3. TestDeepSingleInvocation::test_deep_unsupported_command_sets_hint

Built the subprocess path as the relative "scripts/codelens.py" with PYTHONPATH="scripts". When pytest runs from the scripts/ cwd this became scripts/scripts/codelens.py → can't open file ... No such file or directory.

Fix: use the absolute os.path.join(SCRIPT_DIR, "codelens.py") and PYTHONPATH=SCRIPT_DIR, mirroring every other subprocess invocation in the file. Resolves correctly regardless of cwd.

Before / after

Before (all 3 failing):

FAILED tests/test_cli.py::...::test_scan_with_format_long_does_not_crash  - subprocess.TimeoutExpired: ... timed out after 60 seconds
FAILED tests/test_cli.py::...::test_scan_with_format_short_does_not_crash - subprocess.TimeoutExpired: ... timed out after 60 seconds
FAILED tests/test_hybrid_engine.py::...::test_deep_unsupported_command_sets_hint - can't open file '...\scripts\scripts\codelens.py'

After (the 3 targeted tests):

...                                                                      [100%]
3 passed

Scope note

Closes only the test-design subset of #271. Two other failures remain in these files and are out of scope / pre-existing on main (untouched here):

• test_cli.py::TestCheckCommandArgs::test_check_full_cli_invocation_with_positional — same doubled scripts/scripts relative-path pattern, but not part of the audit(ci): triage 13 test failures unmasked by segfault fix (#266) #271 Group C/D scope.
• test_hybrid_engine.py::TestLSPClient::test_uri_conversion — Windows drive-letter path assertion.

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Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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