Configuration

Set it in the profile's cordis.patch.yml (later layers win, and a patch replaces the whole config, so restate every key you keep):

- id: idle-compactor
  config:
    thresholdTokens: 131072   # 128K
    idleMs: 600000            # 10 minutes

Key	Default	Meaning
`enabled`	`true`	Register no sweep at all when false.
`thresholdTokens`	`131072`	Context floor. Use `128000` for a decimal 128K.
`idleMs`	`600000`	Quiet window before a session is eligible.
`scanMs`	`30000`	Sweep interval; bounds how long after `idleMs` the compaction lands.
`includeSubagents`	`false`	Also compact sessions whose header carries `origin: subagent`.
`excludeArchived`	`true`	Skip sessions the workspace registry reports as archived.
`skipAwaitingWork`	`true`	Never compact a session with background work outstanding — its own or a live descendant's.
`waitWarnMs`	`10800000`	Log one warning per wait episode once it has held a session this long.
`cooldownMs`	`60000`	Minimum spacing between compactions of one session.
`retryBackoffMs`	`300000`	Wait after a failed attempt or a "no compactable range" result.
`maxPerScan`	`1`	Sessions per sweep, bounding concurrent summarization calls.
`dryRun`	`false`	Log what would be compacted; write nothing.

Unknown keys and out-of-range values throw at load.

dsh-idle-compactor