Add frontier experiment orchestration stack

[dipeshbabu]

Summary

• Adds the missing frontier orchestration commands and wiring for protocol, controls, and ablations.
• Implements dry-run support for ablation suite and propagates it through frontier experiment wrappers.
• Introduces the full experiment-stage CLI scripts needed to run prompt generation, activation extraction, bening screening, baselines, falsification slices, and monitoring.
• Adds/updates protocol docs and command infrastructure for end-to-end frontier execution.

Verification

• uv run pytest tests/test_common.py -q
• uv run pytest tests/test_protocol_orchestrator.py -q
• uv run pytest tests/test_config_validation.py -q
• uv run python -m cli.run_frontier_suite --config experiments/protocol/neurips_main_manifest.yaml --dry-run --skip-validation --device mps
• uv run python -m cli.run_ablation_suite --config experiments/protocol/ablation_suite.yaml --dry-run --device mps

Paper/dataset content intentionally left out of this branch.