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kamilkrzywda c90e9ae753
CI / build + unit + e2e (pull_request) Successful in 1m55s
feat(abilities): add disasters & pandemics lever (v0.41.0, #63)
Add the 9th modular LLM ability: a turn-transient `TurnResult.disasters`
lever letting the LLM declare natural/man-made disasters (earthquake /
flood / volcanic / wildfire / famine / plague / epidemic) on a nation or
a region, applying a DETERMINISTIC (type, severity) stat dip (no hidden
randomness). Like the hybrid layer it owns no GameState field, needs no
db.ts change, and leaves no durable list — an ongoing plague/epidemic is
simply re-declared each turn it persists.

- shared/protocol.ts: DisasterType / DisasterSeverity / DisasterEvent /
  DisastersOps, and `TurnResult.disasters` (between `ideology` and
  `markers`; required, default `{ events: [] }`).
- server/abilities/disasters.ts: the ability module (validate / apply /
  schemaLine / constraint / isMeaningful / inert stub / empty payload; no
  stateFields). `DISASTER_EFFECTS` is the deterministic (type, severity)
  dip table (population never touched). Target resolution mirrors hybrid
  (a region key hits its SOLE owner; 0/2+ owners dropped) but has NO
  `from` field, so there is no self-target drop. Dips clamp to 0-100,
  mirror to the target's regions (regionStats), and re-derive the target
  nation's stats (same 0-region / no-entry guards).
- Registered last in ABILITIES (after ideology). System-prompt goldens
  regenerated (one schema line + one constraint bullet each); the
  user.txt golden stays byte-identical (payload() is {}).
- New server/abilities/disasters.test.ts (33 tests); registry.test.ts
  updated to the 9-ability contract.
- Secondary cleanups from the v0.40 refactor: AGENTS.md (abilities/ in
  the Layout tree + a "how to add a new ability" bullet + a disasters
  bullet), delete the orphaned validateTakeovers JSDoc, fold both inline
  `as unknown` casts into the top-level ./abilities import, and de-dup
  `str` (now imported from ./abilities/shared).

Version bumped 0.40.0 -> 0.41.0.
2026-10-16 09:15:55 +00:00
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