[derrynknife]

Summary

Brings ROADMAP.md and stories/ onto dev. They were written on 4 October, as of 0.12, on the unmerged branches claude/roadmap and claude/maintenance-economics-stories. This PR updates them to 0.13 and what is merged on dev for 0.14. The two original commits are kept as they were, with one correcting commit on top, so the corrections can be reviewed on their own.

Scope, as CLAUDE.md now says (#334): RePyability works in model time, and dates and calendars belong to the application.

• A new "Scope" section in the roadmap says so.
• The NPV simulator's phases 2 and 3 now use model time:
  • prices and value are functions of model time;
  • outages are times on the model's timeline;
  • nothing maps model time to dates, and there are no dated outages.
• The stories' B2 and B3 change the same way, as do MX-02, MX-10 and MX-12. A question asked in dates (a month, a financial year) is turned into model time by the application that asks it.
• The live-NPV time-base question now points to "duty" (Degradation processes as lives and replacement on condition by level (#271); unit fixes and duty cycles #276). Mapping dates to model time is the application's job.

Statuses:

• Done in 0.13:
  • the simpler implementations (Clean, simple implementations: remove the code that is there only for speed #204–Random streams: make each simulation's draws depend only on the seed, the stream, the simulation and the draw #209);
  • the hardening items Routes test: run every analysis on every kind of diagram (junctions missing from the non-repairable catalogue), with a guard that the catalogue covers each node kind and spec key #239 (routes on every kind of diagram), Installed 0.11 test suite: 13 modules error (seeded_event_loop.json not in wheel) and docs coverage test fails without docs/ #167 (tests from the installed wheel) and Simulations on one RepairableRBD shared between threads crash (AttributeError '_cancelled' / '_crews') or return a different seeded result #216 (threads).
• NodeState has virtual_age (Fitted repairable models (GeneralizedRenewal, CrowAMSAA, Duane, HPP) as RepairableRBD components #269), so it is no longer listed as missing. Fitted repairable-unit models (Fitted repairable models (GeneralizedRenewal, CrowAMSAA, Duane, HPP) as RepairableRBD components #269) and degradation lives (Replacement on condition driven by a fitted degradation model's level #271) are added to "What exists".
• Review rounds now include Use more of surpyval: what the deep review of surpyval 0.24 found #266 and Review, first findings: lint passes, stale docs fixed, contributor guide #277–Review, docs findings: API pages split, issue numbers out of docstrings, a maintenance guide page #279.
• A short section on the maintenance module ([Moved to Reliafy planning] Maintenance: planning questions answered in model time, one use case at a time #319) says:
  • it is built one use case at a time;
  • UC-5, UC-6, UC-7 and UC-12 are built;
  • the calendar side is left to the application.

Not planned, recorded:

• Fitting stays in SurPyval.
• Plotting stays outside RePyability.
• No physics of failure.
• Calendars and dates belong to the application.
• repyability.maintenance stays in RePyability.

Stories:

• IDs MX-01 to MX-25 are unchanged.
• MX-03, MX-12, MX-18 and MX-19 are now partial, each saying what exists on dev.
• MX-04 names offset_shares=.
• MX-06's per-train allocation shipped in 0.12.
• No story is fully met yet, so none is marked met.

README: a "Roadmap" section links both, placed before "Related".

Type of change

• Bug fix
• New feature
• Documentation
• Refactor / tooling
• Breaking change

Checklist

• No code changes
• test_docs_examples.py and test_readme_capabilities.py pass with the README change: 51 passed

🤖 Generated with Claude Code

https://claude.ai/code/session_019Km2eWBiPJ5JNkme3vRg4B