A run queued again after a restart is not charged again for the minutes the interrupted run already paid #11582

Intent: an interruption costs the owner its minutes once, not twice. Second third of #11560.

Done:

• [ ] read how a run's minutes reach the credit (src/core/cost.ts costOf and its callers) and make the run that carries on after an interruption count only its own minutes, so the interrupted run is counted once
• [ ] a test in test/crew-stopped-twice.test.ts (in-process, no servers): an interrupted run then its follow-up are charged the sum of their own minutes, never the first twice; fails without the change
• [ ] bun x tsc --noEmit and the touched tests pass in the sandbox before the push

Files: src/core/cost.ts or the one module that charges a run, test/crew-stopped-twice.test.ts. Risks: if the ledger already counts each run once, say so with the test as proof, and the pull is the test alone. Suggested brief: scout.