fix(path): preserve the explicit profile in rerun commands

Description

The pitch.

## Summary

Generated Path rerun commands used `--profile`, but the already-running-agent CLI consumes `--path-profile`. A rerun therefore used the current default instead of the profile recorded in the evidence bundle.

This changes the generated flag and adds a regression that runs the generated command through the actual CLI against a local reference agent after changing the test's default. The resulting bundle must retain the original profile, endpoint and pinned-card guard.

This is a prerequisite for changing the default Path transport profile. It does not change the evaluator, transport or protocol.

## Verification

- RED: Path suite 9 passed, 1 failed. The generated rerun silently selected the changed default.
- GREEN: Path suite 10 passed.
- Full suite: 183 passed, nine pre-existing warnings.
- Independent spec/quality review approved. Combined with pending #233–#237, coverage and new transport profile: 267 tests passed.

```sh
python -m pytest -q tests/test_path.py
python -m pytest -q
```