{
  "intent": "Clear the reverse_survivors test files under the cap, and defer its two core source files after both seams failed.",
  "scope": [
    "src/core/sim.test.ts (698 -> 175) + simEnemies, simUnits, simFrenzy test modules",
    "src/core/director.test.ts (315 -> 178) + directorPowers.test.ts",
    "Reverted: src/core/sim.ts (361), src/core/types.ts (295)",
    "Non-goal: no assertion changed, no test deleted"
  ],
  "changes": [
    "Four new test modules, each carrying the original preamble; the unused imports and orphaned local helpers were then pruned iteratively from tsc's own TS6133/TS6192/TS6196 output rather than guessed.",
    "sim.ts was reverted: its exported step() calls survivorStep, which any seam moves out, so the suite failed with 'ReferenceError: survivorStep is not defined' in 63 tests. tsc reported only unused-import warnings on that same code.",
    "types.ts was reverted: the difficulty tables sit below type declarations that reference them, so moving them left StatusKind, EnemyKind and BossKind unresolvable in the new module."
  ],
  "verification": [
    {
      "command": "npm test -- --run",
      "result": "fail twice, then pass",
      "evidence": "160 passed in 13 files, matching the baseline of 160. The two failures were the source splits, not the test splits: 63 and then 64 tests failed with a ReferenceError, which is again a runtime-only symptom that tsc did not catch."
    },
    {
      "command": "npx tsc --noEmit && npx eslint . --max-warnings 0",
      "result": "pass",
      "evidence": "Both clean after pruning roughly a dozen imports and two orphaned test helpers."
    },
    {
      "command": "bash ~/utils/scripts/check_file_length.sh --all | grep reverse",
      "result": "pass",
      "evidence": "Only sim.ts and types.ts remain, both source files, both deliberately deferred."
    }
  ],
  "risks": [
    "This is the third project where a TypeScript seam compiled clean and failed at runtime. The pattern is consistent enough to state plainly: in TS, tsc is not a check that a split worked - only the test run is.",
    "sim.ts and types.ts stay over the cap. Splitting sim.ts means passing the step functions in or hoisting them into a third module; types.ts needs its type declarations separated from the tables that use them."
  ],
  "rollback": [
    "git revert the commit; the two originals return at 698 and 315 lines and the four new modules disappear.",
    "After rollback, re-run npm test and expect 160 passed."
  ]
}