fix: stop creating root.log on autoarray import

[Jammy2211]

Summary

Removes the FileHandler (with filename: root.log) from the packaged autoarray/config/logging.yaml and its test-config mirror. The handler was attached to the root logger unconditionally, so importing autoarray from a cwd whose own config/logging.yaml did not override it (e.g. a bare repo root) caused a root.log file to be dropped into that cwd. Console StreamHandler logging is unchanged.

Reproduction (before the fix): cd <any dir without config/logging.yaml> && python -c "import autoarray" → an empty root.log appears. After the fix the root logger has only a StreamHandler and no file is written.

API Changes

None — internal configuration change only. No public Python symbols are affected.
See full details below.

Test Plan

• pytest test_autoarray/ -x → 732 passed
• Repro check in a neutral cwd: python -c "import autoarray; import logging; print([type(h).__name__ for h in logging.getLogger().handlers])" reports ['StreamHandler'] only, and no root.log is written.
• Regression check from autofit_workspace/: behaviour unchanged (workspace logging.yaml already won before; still wins now).

Full API Changes (for automation & release notes)

Removed

• (none — public API untouched)

Added

• (none)

Changed Behaviour

• Importing autoarray no longer attaches a logging.FileHandler writing to root.log in cwd. Users who relied on this implicit file log must now configure their own FileHandler in their workspace config/logging.yaml.

Migration

• If a user wants file logging, add a file handler to their own config/logging.yaml and include it under root.handlers.

🤖 Generated with Claude Code

[Jammy2211]

Smoke Test Results — 2026-04-18

Workspace	Passed	Failed	Total
autofit_workspace	7	0	7
autogalaxy_workspace	4	2	6
autolens_workspace	6	1	7
autolens_workspace_test	11	1	12

28 / 32 passed. All 4 failures are missing committed FITS datasets (FileNotFoundError), unrelated to this PR — removing the root.log FileHandler does not touch FITS loading, dataset paths, or any code path that these scripts hit before they fail.

Failures (pre-existing, unrelated)

• autogalaxy_workspace/interferometer/start_here.py → FileNotFoundError: dataset/interferometer/uv_wavelengths/sma.fits
• autolens_workspace/interferometer/modeling.py → same sma.fits missing
• autogalaxy_workspace/imaging/start_here.py → FileNotFoundError: dataset/imaging/extra_galaxies/mask_extra_galaxies.fits
• autolens_workspace_test/database/scrape/general.py → FileNotFoundError: dataset/imaging/no_lens_light/data.fits