[codex] add lab project commands

[mrmoxon]

Summary

Adds Lab Project support to the Prime CLI and eval client so users can create, select, clear, archive, restore, inspect, and attach artifacts to projects from the terminal.

Details

• Adds prime project commands for create/list/show/use/current/clear/update/archive/restore/assign/remove.
• Adds active project context resolution for training and evaluation flows.
• Adds project IDs to eval push/create/update and hosted eval paths.
• Adds project assignment helpers for hosted training runs and adapters.
• Supports additive project assignment for runs/adapters via assign, and clear-or-specific removal via remove.

Validation

• uv run --project /Users/oscarmoxon/Desktop/Prime/prime-cli pytest packages/prime/tests/test_projects_cli.py packages/prime/tests/test_eval_push.py packages/prime/tests/test_hosted_eval.py -q
• uv run --project /Users/oscarmoxon/Desktop/Prime/prime-cli ruff check packages/prime/src/prime_cli/commands/projects.py packages/prime/src/prime_cli/api/rl.py packages/prime/src/prime_cli/api/deployments.py packages/prime/tests/test_projects_cli.py
• git diff --check