feat(cli): expose missing EmissionsTracker options in 'codecarbon monitor' (#1273)

[sreeramakhil]

…itor' (#1273)

Add --project-name, --output-dir, --pue, --wue, --gpu-ids, --force-cpu-power, --force-ram-power, and --allow-multiple-runs flags to the monitor command. Unset options are omitted from tracker_args so config-file/env-var defaults are preserved. Includes 3 new tests.

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[sreeramakhil]

Fixes #1273

Problem

codecarbon monitor --help only exposed 7 options (measure-power-secs, api-call-interval, api, offline, country-iso-code, region, log-level), but EmissionsTracker.__init__ accepts 28+ parameters. Users running from the CLI had no way to set commonly needed options like pue, wue, gpu_ids, or force_cpu_power without dropping down to the Python API or a config file.

Solution

Added 8 new flags to the monitor() command in codecarbon/cli/main.py:

Flag	Type	Description
--project-name	str	Project name for the experiment run
--output-dir	str	Directory to write emissions.csv to
--pue	float	Power Usage Effectiveness of the datacenter
--wue	float	Water Usage Effectiveness of the datacenter
--gpu-ids	str	Comma-separated GPU ids to track (e.g. 0,1)
--force-cpu-power	int	Force CPU power draw in Watts
--force-ram-power	int	Force RAM power draw in Watts
--allow-multiple-runs	bool	Allow multiple trackers on the same machine

Design decisions

• Unset options are omitted, not passed as None. New options default to None at the CLI level, but are filtered out of tracker_args before reaching EmissionsTracker. This preserves the existing config-file → environment-variable → hardcoded-default precedence chain. A user who sets pue=1.4 in ~/.codecarbon.config but doesn't pass --pue on the CLI will still get 1.4, not None.
• gpu-ids is accepted as a comma-separated string ("0,1") and parsed into a list (["0", "1"]) before forwarding, matching what EmissionsTracker expects.

Tests added

3 new tests in tests/cli/test_cli_main.py:

1. test_monitor_help_lists_new_tracker_options — asserts all 8 flags appear in --help output (uses COLUMNS=200 env to prevent typer from truncating long flag names).
2. test_monitor_offline_forwards_new_options_to_tracker — invokes the full CLI with all new flags set, verifies each value reaches OfflineEmissionsTracker.__init__ with the correct type and value.
3. test_monitor_offline_omits_unset_optional_tracker_args — invokes with only --offline --country-iso-code FRA, verifies none of the 8 new keys appear in tracker_args.

All existing tests continue to pass (27/27 + 3 new = 30 total, the pre-existing test_monitor_run_and_monitor failure is a known Windows-only issue where echo is a shell built-in, not a standalone executable — passes on Linux CI).