Key	Default	Meaning
`backend`	`windows`	`windows` (native helper) or `fake` (a scripted desktop for tests)
`surface`	`computer`	Tool catalog requested from the helper
`stealFocus`	`true`	Input methods activate their target window
`maxImageEdge`	`0`	DSH extension: `0` keeps the official behaviour (no downscale); set e.g. `1280` to trade image quality for tokens
`approveLaunch`	`true`	Ask before `launch_app`
`timeoutMs` / `launchAppTimeoutMs`	`10000` / `15000`	Official request budgets; a timeout rejects in-flight requests
`startupTimeoutMs`	`15000`	Helper boot budget
`preserveHelperOnTimeout`	`false`	Keep the helper alive after a timeout for debugging
`allowedApps`	`[]`	Non-empty means only these app ids may be observed or driven
`envAllowlist`	`[]`	Extra environment names forwarded to the helper on top of the shipped allow list

Key	Default	Meaning
`enabled`	`true`	Master switch for reading and writing notes
`store`	`""`	Empty means `
/.experience`
`captureObservations`	`true`	Write the machine-observed facts
`injectDigest`	`true`	Attach the advisory block to the first observation of a matching app
`maxEntries` / `maxChars`	`3` / `900`	Injection budget
`staleAfterDays`	`90`	Notes older than this are marked as possibly outdated
`includeStale`	`true`	`false` drops stale notes from the digest entirely
`retainEntries` / `retainObservationDays`	`200` / `30`	Retention
`redactPaths`	`true`	Redact local profile paths in recorded error text

Key	Default	Meaning
`surfaces`	`[computer]`	Which catalogs to expose (`computer`, `browser`, `mac`, `all`)
`browserSkill`	`computer-use-browser`	Skill that unlocks the browser catalog
`approvalDefault`	`prompt`	What to do when the helper refuses for approval: `prompt`, `allow`, `deny`
`approvalTools`	`{}`	Per-tool override of the above
`enabledTools`	`[batch_actions]`	Which harness extensions enter the model-facing catalog

dsh-computer-use

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