fix: add browser snapshot default mode (#1336)

Co-authored-by: Seb Slight <sbarrios93@gmail.com>

docs/gateway/configuration.md

@@ -2615,10 +2615,13 @@ Defaults:
     // noSandbox: false,
     // executablePath: "/Applications/Brave Browser.app/Contents/MacOS/Brave Browser",
     // attachOnly: false, // set true when tunneling a remote CDP to localhost
+    // snapshotDefaults: { mode: "efficient" }, // tool/CLI default snapshot preset
   }
 }
 ```
 
+Note: `browser.snapshotDefaults` only affects Clawdbot's browser tool + CLI. Direct HTTP clients must pass `mode` explicitly.
+
 ### `ui` (Appearance)
 
 Optional accent color used by the native apps for UI chrome (e.g. Talk Mode bubble tint).

docs/tools/browser.md

@@ -500,6 +500,7 @@ Notes:
   - `--format ai` (default when Playwright is installed): returns an AI snapshot with numeric refs (`aria-ref="<n>"`).
   - `--format aria`: returns the accessibility tree (no refs; inspection only).
   - `--efficient` (or `--mode efficient`): compact role snapshot preset (interactive + compact + depth + lower maxChars).
+  - Config default (tool/CLI only): set `browser.snapshotDefaults.mode: "efficient"` to use efficient snapshots when the caller does not pass a mode (see [Gateway configuration](/gateway/configuration#browser-clawd-managed-browser)).
   - Role snapshot options (`--interactive`, `--compact`, `--depth`, `--selector`) force a role-based snapshot with refs like `ref=e12`.
   - `--frame "<iframe selector>"` scopes role snapshots to an iframe (pairs with role refs like `e12`).
   - `--interactive` outputs a flat, easy-to-pick list of interactive elements (best for driving actions).