dsh-cited-synthesis: Delivering web search answers based on verifiable standards

dsh-cited-synthesis registers the `cited-synthesis-rules` section and the `cited-synthesis-delivery` skill with DeepSeek Harness. It requires that Web search answers be sentence-by-sentence chainable, clearly state validity conditions, list contradictory conclusions, and annotate inferences and evidence types. It is suitable for scenarios such as policy queries and product comparisons where web content is read, but not for academic literature reviews. Host-only installation: Run `npx @deepseek-ai/dsh web` and target `dsh-cited-synthesis`. MIT license, compatible with DSH 0.2.2-rc.1.