fix(MAT-273): remove Skyvern (archived) + fix CI test failures

- Remove Skyvern service + DB from docker-compose.yml
- Remove cron/browser_executor.py and pipelines/steps/skyvern.py
- Remove browser_scrape from cron executor dispatch
- Update tests to reflect Skyvern removal
- Fix test_needs_query_rewrite false positive ('das' is a valid trigger)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_cron_executor.py

@@ -33,16 +33,16 @@ class TestExecuteJob:
         assert "Don't forget!" in send_text.call_args[0][1]
 
     @pytest.mark.asyncio
-    async def test_dispatches_to_browser_scrape_no_profile(self):
+    async def test_unknown_browser_scrape_returns_error(self):
+        """browser_scrape was removed (Skyvern archived), should fail as unknown."""
         job = {
             "id": "j1",
             "name": "Scrape Test",
             "jobType": "browser_scrape",
             "config": {"url": "https://example.com"},
             "targetRoom": "!room:test",
-            "browserProfile": None,
         }
         send_text = AsyncMock()
         result = await execute_job(job=job, send_text=send_text, matrix_client=None)
         assert result["status"] == "error"
-        assert "browser profile" in result["error"].lower()
+        assert "Unknown job type" in result["error"]