claude-tag/concepts/how-it-works.md
The thread is durable; the sandbox is not. When a session is idle, its sandbox is released, and it is rebuilt when the next message arrives.
The founding quote of subagentcontracts.com — durable vs. ephemeral as an architectural boundary, cited on its /concepts/durability page and generalized into that site's contract_ledger.survives column.
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used by subagentcontracts.com — https://subagentcontracts.com/concepts/durability
created 2026-07-01 18:51:37