improvement(browser): accept observe on every page action (#9085)

Models carry observe: {} over from click and type to set_checked,
select_option, click_at, insert_text and drag, and the driver refused those
calls outright, costing a round each time (26 refusals across 650 benchmark
episodes). The observation runs after the action exactly as it does for the
other actions.

Author: waleedlatif1

apps/desktop/src/main/browser-agent/post-action-observation.test.ts

@@ -94,4 +94,25 @@ describe('post-action observation', () => {
       })
     }
   )
+
+  it.each([
+    'browser_click_at',
+    'browser_insert_text',
+    'browser_select_option',
+    'browser_set_checked',
+    'browser_drag',
+  ] as const)('observes after %s instead of refusing the call', async (tool) => {
+    await expect(
+      withPostActionObservation(
+        tool,
+        { observe: {} },
+        async () => ({ dispatched: true }),
+        async () => ({ outline: 'After' }),
+        () => {}
+      )
+    ).resolves.toMatchObject({
+      dispatched: true,
+      observation: { ok: true, result: { outline: 'After' } },
+    })
+  })
 })

apps/desktop/src/main/browser-agent/post-action-observation.ts

@@ -3,13 +3,19 @@ import { getErrorMessage } from '@sim/utils/errors'
 import { isRecordLike } from '@sim/utils/object'
 import { ToolError } from '@/main/browser-agent/errors'
 
+/** Every page action accepts observe: models carry it over from click and type to the rest. */
 const OBSERVABLE_ACTIONS: ReadonlySet<BrowserToolName> = new Set([
   'browser_click',
+  'browser_click_at',
   'browser_type',
+  'browser_insert_text',
   'browser_press_key',
   'browser_fill_form',
+  'browser_select_option',
+  'browser_set_checked',
   'browser_scroll',
   'browser_hover',
+  'browser_drag',
   'browser_batch',
 ])