BREAKING CHANGE: MCP tools search, vector_search, deep_search removed.
Use structured_search with lex/vec/hyde queries instead.
- Remove search, vector_search, deep_search MCP tool registrations
- Update MCP instructions to focus on structured_search
- Update skill docs to reflect simplified API
- Rename test describes to reflect they test store functions
- CLI commands (qmd search, vsearch, query) unchanged for backwards compat