ReNunney/docs/MIGRATION.md

Migration

Goal

Move the current cost-of-substitution implementation into renunney in staged, low-risk steps.

Current State

Operational code still lives in:

• ../../collaborations/to_ptbc/evc/cost_of_substitution

renunney currently acts as:

• a clean git repository,
• the local home of the Track 1 runtime and orchestration stack,
• a stable place for deployment and orchestration commands,
• and the starting point for the Track 2 Rust implementation.

Recommended Migration Order

1. Orchestration control plane has been migrated locally:
   • src/renunney/orchestration.py
   • scripts/run_orchestration.py
2. Paper-scale Figure 1 submission configs have been copied locally into config/.
3. Track 1 runner and API boundary have been migrated locally:
   • scripts/run_track1.py
   • src/renunney/track1_api.py
4. Track 1 analysis boundary has been migrated locally:
   • src/renunney/track1_analysis.py
5. Track 1 threshold/search boundary has been migrated locally:
   • src/renunney/track1_threshold.py
6. Track 1 simulation kernel has been migrated locally:
   • src/renunney/track1_reference.py
7. Track 1 report layer has been migrated locally:
   • src/renunney/track1_report.py
8. Track 1 extinction-model data layer has been migrated locally:
   • src/renunney/track1_extinction.py
9. Track 1 dataset generator has been migrated locally:
   • src/renunney/track1_dataset.py
10. Track 1 fit layer has been migrated locally:

• src/renunney/track1_fit.py

11. Track 1 runtime path is now fully local to renunney.
12. Reduce or remove any remaining compatibility-layer imports outside the Track 1 runtime path.
13. Migrate docs and example configs last, after path references are updated.
14. Start Track 2 in-repo as a Rust workspace:

• Cargo.toml
• rust/track2-core
• docs/TRACK2_RUST.md

Constraint

Do not break the ability to run current Figure 1 jobs while migrating code.