Removed the experimental search strategies that were only reachable through the "Show All Strategies" toggle (rapid, parallel, iterative, recursive, adaptive, smart, standard, iterdrag, browsecomp, evidence, the constrained/dual-confidence family, modular, and others), along with the toggle itself. The strategy dropdown now offers source-based, focused-iteration, focused-iteration-standard, topic-organization, mcp, and langgraph-agent. The news feature's internal news-aggregation strategy is unaffected.
