Resolved highest-first: the profile patch's config, environment variables, then ~/.dsh/browser/config.json. Defaults:

Key	Env	Default	Meaning
`headless`	`BROWSER_PLUGIN_HEADLESS`	`true`	Run without a visible window
`port`	`BROWSER_PLUGIN_PORT`	`9333`	DevTools port; a browser here is adopted
`browserPath`	`BROWSER_PLUGIN_CHROME`	discovered	Explicit browser executable
`windowWidth` / `windowHeight`	`BROWSER_PLUGIN_WINDOW_*`	`1440` / `900`	Viewport for captures
`chromeFlags`	`BROWSER_PLUGIN_CHROME_FLAGS`	`[]`	Extra flags, e.g. `--no-sandbox` in a container
`idleShutdownMs`	`BROWSER_PLUGIN_IDLE_MS`	`600000`	Reclaim the browser after this long idle; `0` disables
`prewarm`	`BROWSER_PLUGIN_PREWARM`	`false`	Start the browser at mount, so the first call needs no cold start
`navigationTimeoutMs`	`BROWSER_PLUGIN_NAV_TIMEOUT_MS`	`20000`	Per-navigation budget
`actionTimeoutMs`	`BROWSER_PLUGIN_ACTION_TIMEOUT_MS`	`15000`	Per-call budget
`captureTimeoutMs`	`BROWSER_PLUGIN_CAPTURE_TIMEOUT_MS`	`15000`	Per-capture budget
`waitTimeoutMs`	`BROWSER_PLUGIN_WAIT_TIMEOUT_MS`	`30000`	Ceiling for `browser_wait_for`
`wakeDisplay`	`BROWSER_PLUGIN_WAKE_DISPLAY`	`true` on macOS	Wake the display for the duration of a capture
`shotLimit`	`BROWSER_PLUGIN_SHOT_LIMIT`	`60`	Screenshots kept on disk (ring buffer)
`imageToModel`	`BROWSER_PLUGIN_IMAGE_TO_MODEL`	`auto`	`auto` (only when the route accepts images), `always`, `never`
`verbose`	`BROWSER_PLUGIN_VERBOSE`	`false`	Log lifecycle lines to stderr

State lives in ~/.dsh/browser/: profile/ (the browser profile), shots/ (captured PNGs), config.json.

dsh-browser

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