fix(search): let the guidance alone say how to recover from a search nothing served

Author: waleedlatif1

apps/sim/lib/mothership/tools/server/knowledge/workspace-search.ts

@@ -90,7 +90,7 @@ export const searchWorkspaceServerTool: BaseServerTool = {
           return {
             success: true,
             message: nothingSearched
-              ? 'Nothing was searched: no connected account can serve this search, so it says nothing about what exists. Follow the first line of live.guidance (connect an account, or drop the source filter) instead of retrying the same search.'
+              ? 'Nothing was searched: no connected account can serve this search, so it says nothing about what exists. Follow the first line of live.guidance instead of retrying the same search.'
               : `${data.retrieval.status === 'partial' ? 'Search coverage is incomplete. Continue with a more specific query or source filter; these results cannot establish absence or completeness. ' : ''}Found ${data.results.length} live results. Read a documentId when its passage does not answer the question or more context is needed. ${CITATION_INSTRUCTION}`,
             data: {
               ...data,