docs: refresh browser existing-session limit refs

docs/cli/browser.md

@@ -213,7 +213,13 @@ Current existing-session limits:
 - `click` is left-click only
 - `type` does not support `slowly=true`
 - `press` does not support `delayMs`
+- `hover`, `scrollintoview`, `drag`, `select`, `fill`, and `evaluate` reject
+  per-call timeout overrides
+- `select` supports one value only
 - `wait --load networkidle` is not supported
+- file uploads require `--ref` / `--input-ref`, do not support CSS
+  `--element`, and currently support one file at a time
+- dialog hooks do not support `--timeout`
 - screenshots support page captures and `--ref`, but not CSS `--element`
 - `responsebody`, download interception, PDF export, and batch actions still
   require a managed browser or raw CDP profile